-----------------------------------------------------------------------
  **MSFC PRACA : 2003-02-12 08:41**

  -----------------------------------------------------------------------

  -----------------------------------------------------------------------
  MSFC Problem Reporting and Corrective Action (PRACA) System

  WHOLE RECORD REPORT( + ADDENDUM)
  -----------------------------------------------------------------------

+-------------+---------------+-----------+------------+------+-------+
| **MSFC      | **In-Flight   | **C       | **JSC#**\  | *    |       |
| Record      | Anomaly       | ontractor | \--        | *KSC |       |
| \#**\       | Number**\     | Report    |            | #**\ |       |
| A17816      | \--           | Number**\ |            | \--  |       |
|             |               | S-089     |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **Problem   |               |           |            |      |       |
| Title**\    |               |           |            |      |       |
| INTERTANK   |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| UNDERSIZED  |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **EICN#**\  | **ELEMENT**\  | **Cont    | **FSCM#**\ | **   |       |
| \--         | ET            | ractor**\ | \--        | FCRI |       |
|             |               | LMMSS     |            | T**\ |       |
|             |               |           |            | 1    |       |
+-------------+---------------+-----------+------------+------+-------+
| **HCRIT**\  | **Sys_Lvl**\  | **Misc    |            |      |       |
| 1           | \--           | Codes**\  |            |      |       |
|             |               | A B C D E |            |      |       |
|             |               | F G H     |            |      |       |
|             |               | **(U)** I |            |      |       |
|             |               | J K L M N |            |      |       |
|             |               | O         |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **          | **NO          | *         | **S        | *    |       |
| HARDWARE**\ | MENCLATURE**\ | *PART#**\ | ER/LOT#**\ | *MAN |       |
| EIM         | \--           | \--       | \--        | UFAC |       |
|             |               |           |            | TURE |       |
|             |               |           |            | R**\ |       |
|             |               |           |            | \--  |       |
+-------------+---------------+-----------+------------+------+-------+
| **          | **NO          | *         | **S        | *    |       |
| HARDWARE**\ | MENCLATURE**\ | *PART#**\ | ER/LOT#**\ | *MAN |       |
| LRU         | \--           | \--       | \--        | UFAC |       |
|             |               |           |            | TURE |       |
|             |               |           |            | R**\ |       |
|             |               |           |            | \--  |       |
+-------------+---------------+-----------+------------+------+-------+
| **          | **NO          | *         | **S        | *    |       |
| HARDWARE**\ | MENCLATURE**\ | *PART#**\ | ER/LOT#**\ | *MAN |       |
| NCA         | INTERTANK     | 809130    | N/A        | UFAC |       |
|             | STRINGER      | 00413-4XX |            | TURE |       |
|             |               |           |            | R**\ |       |
|             |               |           |            | AERO |       |
|             |               |           |            | CHEM |       |
+-------------+---------------+-----------+------------+------+-------+
| **Test/O    | **Prevailing  | **F /     | **Fail     | **   |       |
| peration**\ | Condtion**\   | U**\      | Mode**\    | Caus |       |
| M - MFG     | N -           | UC        | MU - MECH  | e**\ |       |
|             | INSPECTION    |           | TOLRNCE    | \--  |       |
+-------------+---------------+-----------+------------+------+-------+
| **System**\ | **Defect**\   | **Ma      | **Work     | **   |       |
| STRUCTURAL  | MD - M SIZE   | terial**\ | Contact**\ | Fail |       |
|             |               | S -       | W.         | Dat  |       |
|             |               | STRUCT    | MATTHEESEN | e**\ |       |
|             |               |           |            | 10   |       |
|             |               |           |            | /04/ |       |
|             |               |           |            | 2002 |       |
+-------------+---------------+-----------+------------+------+-------+
| **Received  | **Date        | **FMEA    | **IFA:     | *    |       |
| at MSFC**\  | Isolated**\   | Ref       | Mission    | *Mis |       |
| 10/29/2002  | 10/29/2002    | erence**\ | Phase**\   | sion |       |
|             |               | N/A       | \--        | Ela  |       |
|             |               |           |            | psed |       |
|             |               |           |            | Tim  |       |
|             |               |           |            | e**\ |       |
|             |               |           |            | \--  |       |
+-------------+---------------+-----------+------------+------+-------+
| **          |               | **S       |            | **   |       |
| Location**\ |               | ymptom**\ |            | Time |       |
| MAF         |               | MU - MECH |            | Cycl |       |
|             |               | TOLRNCE   |            | e**\ |       |
|             |               |           |            | \--  |       |
+-------------+---------------+-----------+------------+------+-------+
| **          |               |           |            |      |       |
| Effectivity |               |           |            |      |       |
| Text**\     |               |           |            |      |       |
| ET-93, 94,  |               |           |            |      |       |
| 116 AND UP; |               |           |            |      |       |
| INTERIM     |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| THRU        |               |           |            |      |       |
| 1/30/03     |               |           |            |      |       |
| APPROVED BY |               |           |            |      |       |
| MSFC        |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **Vehicle   |               |           |            |      |       |
| Effectivity |               |           |            |      |       |
| Codes**     |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **Vehicle   | **Vehicle     | **Vehicle | **Vehicle  | *    |       |
| 1**\        | 2**\          | 3**\      | 4**\       | *Veh |       |
| \--         | \--           | \--       | \--        | icle |       |
|             |               |           |            | 5**\ |       |
|             |               |           |            | \--  |       |
+-------------+---------------+-----------+------------+------+-------+
| **Mission   |               |           |            |      |       |
| Effectivity |               |           |            |      |       |
| Codes**     |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **Mssn 1**\ | **Mssn 2**\   | **Mssn    | **Mssn     | **   |       |
| \--         | \--           | 3**\      | 4**\       | Mssn |       |
|             |               | \--       | \--        | 5**\ |       |
|             |               |           |            | \--  |       |
+-------------+---------------+-----------+------------+------+-------+
| **Estimated |               |           |            |      |       |
| Completion  |               |           |            |      |       |
| Dates**     |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **MSFC      | **Contractor  | **LVL 3   | **Remark / |      |       |
| Approved    | Req Defer     | Close**\  | Action**\  |      |       |
| Defer Until | Until Date**\ | \--       | \--        |      |       |
| Date**\     | \--           |           |            |      |       |
| 01/30/2003  |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **In        |               |           |            |      |       |
| vestigation |               |           |            |      |       |
| /           |               |           |            |      |       |
| Resolution  |               |           |            |      |       |
| Summary**   |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **Last MSFC | **CN RSLV     | **Defer   | **Add      | *    |       |
| Update**\   | SBMT**\       | Date**\   | Date**\    | *R/C |       |
| 01/31/2003  | \--           | 1         | 10/30/2002 | Code |       |
|             |               | 2/03/2002 |            | s**\ |       |
|             |               |           |            | \--  |       |
|             |               |           |            | \--  |       |
|             |               |           |            | \--  |       |
+-------------+---------------+-----------+------------+------+-------+
| *           |               |           |            |      |       |
| *Assignee** |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **Design**\ | **Chief       | **S &     | **         | *    |       |
| S. AVANS    | Engineer**\   | MA**\     | Project**\ | *Pro |       |
|             | T. GREENWOOD  | K. LAYNE  | \--        | ject |       |
|             |               |           |            | MG   |       |
|             |               |           |            | R**\ |       |
|             |               |           |            | J.   |       |
|             |               |           |            | SME  |       |
|             |               |           |            | LSER |       |
+-------------+---------------+-----------+------------+------+-------+
| *           |               |           |            |      |       |
| *Approval** |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **Design**\ | **Chief       | **S &     | **         | *    |       |
| \--         | Engineer**\   | MA**\     | Project**\ | *Pro |       |
|             | \--           | \--       | \--        | ject |       |
|             |               |           |            | MG   |       |
|             |               |           |            | R**\ |       |
|             |               |           |            | \--  |       |
+-------------+---------------+-----------+------------+------+-------+
| **PAC       | **PAC Review  | **MSFC    | *          | *    |       |
| Assignee**\ | Complete**\   | Closure   | *Status**\ | *F/A |       |
| T. WHITE    | \--           | Date**\   | O - OPEN   | C    |       |
|             |               | \--       |            | ompl |       |
|             |               |           |            | etio |       |
|             |               |           |            | n**\ |       |
|             |               |           |            | \--  |       |
+-------------+---------------+-----------+------------+------+-------+
| **Problem   | **SEV**\      | **Program | **REVL**\  | **O  |       |
| Type**\     | \--           | Name**\   | \--        | PRIN |       |
| \--         |               | \--       |            | C**\ |       |
|             |               |           |            | \--  |       |
+-------------+---------------+-----------+------------+------+-------+
| **FUNC      | **Software    | *         |            | **SU | **Sof |
| MOD**\      | E             | *Software |            | BTYP | tware |
| \--         | ffectivity**\ | Fail      |            | E**\ | Cl    |
|             | \-- \-- \--   | CD**\     |            | \--  | osure |
|             | \-- \--       | \--       |            |      | CD**\ |
|             |               |           |            |      | \--   |
+-------------+---------------+-----------+------------+------+-------+
| **RES       | **Approval    |           |            |      |       |
| PERSON      | Signature     |           |            |      |       |
| L2**\       | L3**\         |           |            |      |       |
| \--         | \--           |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **Related   | **Related     |           |            |      |       |
| Document    | Document      |           |            |      |       |
| Type**\     | ID**\         |           |            |      |       |
| NC - PROB   | SEE           |           |            |      |       |
| RPT         | S1-2002-S005  |           |            |      |       |
|             | FOR NCDS      |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **Related   |               |           |            |      |       |
| Document    |               |           |            |      |       |
| Title**\    |               |           |            |      |       |
| \--         |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **Related   | **Related     |           |            |      |       |
| Document    | Document      |           |            |      |       |
| Type**\     | ID**\         |           |            |      |       |
| \--         | \--           |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **Related   |               |           |            |      |       |
| Document    |               |           |            |      |       |
| Title**\    |               |           |            |      |       |
| \--         |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **Related   | **Related     |           |            |      |       |
| Document    | Document      |           |            |      |       |
| Type**\     | ID**\         |           |            |      |       |
| \--         | \--           |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **Related   |               |           |            |      |       |
| Document    |               |           |            |      |       |
| Title**\    |               |           |            |      |       |
| \--         |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| *           |               |           |            |      |       |
| *Contractor |               |           |            |      |       |
| Status      |               |           |            |      |       |
| Summary**   |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **Reliabil  |               |           |            |      |       |
| ity/Quality |               |           |            |      |       |
| Assurance   |               |           |            |      |       |
| Concerns,   |               |           |            |      |       |
| Recomme     |               |           |            |      |       |
| ndations:** |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **Problem   |               |           |            |      |       |
| De          |               |           |            |      |       |
| scription** |               |           |            |      |       |
|             |               |           |            |      |       |
| INTERTANK   |               |           |            |      |       |
| 2090 AND    |               |           |            |      |       |
| 2024 ROLL   |               |           |            |      |       |
| FORMED      |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| PROCESSED   |               |           |            |      |       |
| BY          |               |           |            |      |       |
|             |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| AND         |               |           |            |      |       |
| DELIVERED   |               |           |            |      |       |
| UNDER       |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| RE          |               |           |            |      |       |
| QUIREMENTS. |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| *           |               |           |            |      |       |
| *Contractor |               |           |            |      |       |
| Inve        |               |           |            |      |       |
| stigation/R |               |           |            |      |       |
| esolution** |               |           |            |      |       |
|             |               |           |            |      |       |
| 1           |               |           |            |      |       |
| 0/29/2002 - |               |           |            |      |       |
| CONTRACTOR  |               |           |            |      |       |
| SUBMITTED   |               |           |            |      |       |
| OPENER      |               |           |            |      |       |
| PROBLEM     |               |           |            |      |       |
| REPORT AS   |               |           |            |      |       |
| FOLLOWS:    |               |           |            |      |       |
|             |               |           |            |      |       |
| PROBLEM     |               |           |            |      |       |
| DESCRIPTION |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-      |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| INTERTANK   |               |           |            |      |       |
| 2090 AND    |               |           |            |      |       |
| 2024 ROLL   |               |           |            |      |       |
| FORMED      |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| PROCESSED   |               |           |            |      |       |
| BY          |               |           |            |      |       |
|             |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| AND         |               |           |            |      |       |
| DELIVERED   |               |           |            |      |       |
| UNDER       |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| RE          |               |           |            |      |       |
| QUIREMENTS. |               |           |            |      |       |
|             |               |           |            |      |       |
| GENERAL     |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| DURING      |               |           |            |      |       |
| IN-PROCESS  |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| AT AEROCHEM |               |           |            |      |       |
| AN          |               |           |            |      |       |
| INSPECTOR   |               |           |            |      |       |
| NOTED SOME  |               |           |            |      |       |
| PARTS       |               |           |            |      |       |
|             |               |           |            |      |       |
| BELOW       |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| REQUIREMENT |               |           |            |      |       |
| IN AN AREA  |               |           |            |      |       |
| THAT HAD    |               |           |            |      |       |
| BEEN        |               |           |            |      |       |
| BLENDED     |               |           |            |      |       |
|             |               |           |            |      |       |
| (REWORKED)  |               |           |            |      |       |
| TO REMOVE A |               |           |            |      |       |
| SURFACE     |               |           |            |      |       |
| DEFECT. THE |               |           |            |      |       |
| SAME        |               |           |            |      |       |
| INSPECTOR,  |               |           |            |      |       |
| WHILE       |               |           |            |      |       |
|             |               |           |            |      |       |
| PERFORMING  |               |           |            |      |       |
| RECEIVING   |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| ACTIVITY ON |               |           |            |      |       |
| INCOMING    |               |           |            |      |       |
| PARTS FROM  |               |           |            |      |       |
| DMF         |               |           |            |      |       |
|             |               |           |            |      |       |
| (DYNAMIC    |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| FORMING,    |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| FORMING     |               |           |            |      |       |
| SUB-TIER),  |               |           |            |      |       |
| FOUND SOME  |               |           |            |      |       |
| PARTS       |               |           |            |      |       |
|             |               |           |            |      |       |
| THAT WERE   |               |           |            |      |       |
| AT THE LOW  |               |           |            |      |       |
| SIDE OF THE |               |           |            |      |       |
| TOLERANCE.  |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| INITIATED   |               |           |            |      |       |
| NCD         |               |           |            |      |       |
|             |               |           |            |      |       |
| N022653 FOR |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| VIOLATIONS  |               |           |            |      |       |
| FOR P/N     |               |           |            |      |       |
| 80913000413 |               |           |            |      |       |
|             |               |           |            |      |       |
| SERIES      |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| AS RECEIVED |               |           |            |      |       |
| FROM DMF.   |               |           |            |      |       |
| PER         |               |           |            |      |       |
| ENGINEERING |               |           |            |      |       |
| DRAWING,    |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| REQUIRED    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| IS 0.063    |               |           |            |      |       |
| INCHES PLUS |               |           |            |      |       |
| OR MINUS    |               |           |            |      |       |
| 0.004       |               |           |            |      |       |
| INCHES.     |               |           |            |      |       |
|             |               |           |            |      |       |
| ADDITIONAL  |               |           |            |      |       |
| PROCESSING  |               |           |            |      |       |
| AT AEROCHEM |               |           |            |      |       |
| CAN REMOVE  |               |           |            |      |       |
| A MAXIMUM   |               |           |            |      |       |
| OF 0.0012   |               |           |            |      |       |
| INCH        |               |           |            |      |       |
|             |               |           |            |      |       |
| FOR         |               |           |            |      |       |
| CHEM-MILLED |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| AND 0.0028  |               |           |            |      |       |
| INCHES FOR  |               |           |            |      |       |
| NON-        |               |           |            |      |       |
| CHEM-MILLED |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGERS.  |               |           |            |      |       |
| BASED ON    |               |           |            |      |       |
| THE         |               |           |            |      |       |
| FINDINGS AT |               |           |            |      |       |
| AEROCHEM, A |               |           |            |      |       |
| STOCK CHECK |               |           |            |      |       |
| WAS         |               |           |            |      |       |
|             |               |           |            |      |       |
| CONDUCTED   |               |           |            |      |       |
| AT MAF TO   |               |           |            |      |       |
| INSPECT     |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS.  |               |           |            |      |       |
| THE         |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| FOUND       |               |           |            |      |       |
|             |               |           |            |      |       |
| SOME        |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| TO BE       |               |           |            |      |       |
| UNDERSIZE.  |               |           |            |      |       |
| A REVIEW OF |               |           |            |      |       |
| THE         |               |           |            |      |       |
| MA          |               |           |            |      |       |
| NUFACTURING |               |           |            |      |       |
| RECORDS     |               |           |            |      |       |
|             |               |           |            |      |       |
| AT AEROCHEM |               |           |            |      |       |
| REVEALED    |               |           |            |      |       |
| THAT THE    |               |           |            |      |       |
| STOCK       |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| IS CHECKED  |               |           |            |      |       |
| WHEN        |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
|             |               |           |            |      |       |
| RECEIVES    |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| FROM DMF.   |               |           |            |      |       |
| AFTER       |               |           |            |      |       |
| PROCESSING  |               |           |            |      |       |
| AT          |               |           |            |      |       |
| AEROCHEM,   |               |           |            |      |       |
| THE STOCK   |               |           |            |      |       |
|             |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| IS NOT      |               |           |            |      |       |
| CHECKED     |               |           |            |      |       |
| AGAIN.      |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| MADE FROM   |               |           |            |      |       |
| MATERIAL ON |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| LOWER END   |               |           |            |      |       |
| OF THE      |               |           |            |      |       |
| TOLERANCE   |               |           |            |      |       |
| COULD BE    |               |           |            |      |       |
| UNDERSIZE   |               |           |            |      |       |
| AFTER       |               |           |            |      |       |
| PROCESSING. |               |           |            |      |       |
|             |               |           |            |      |       |
| MA          |               |           |            |      |       |
| NUFACTURING |               |           |            |      |       |
| DO          |               |           |            |      |       |
| CUMENTATION |               |           |            |      |       |
| IS BEING    |               |           |            |      |       |
| REVIEWED TO |               |           |            |      |       |
| DETERMINE   |               |           |            |      |       |
| STOCK       |               |           |            |      |       |
|             |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| AT THE      |               |           |            |      |       |
| START OF    |               |           |            |      |       |
| THE         |               |           |            |      |       |
| PROCESSING  |               |           |            |      |       |
| CYCLE.      |               |           |            |      |       |
| UNLIKE      |               |           |            |      |       |
| SIXTH BUY   |               |           |            |      |       |
|             |               |           |            |      |       |
| HARDWARE    |               |           |            |      |       |
| WHERE MAF   |               |           |            |      |       |
| ASSEMBLED   |               |           |            |      |       |
| THE         |               |           |            |      |       |
| INTERTANK   |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| ALSO        |               |           |            |      |       |
|             |               |           |            |      |       |
| M           |               |           |            |      |       |
| ANUFACTURED |               |           |            |      |       |
| THE         |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| FOR 5TH BUY |               |           |            |      |       |
| THEN THEY   |               |           |            |      |       |
| WERE SENT   |               |           |            |      |       |
| TO LEARJET  |               |           |            |      |       |
|             |               |           |            |      |       |
| IN WICHITA, |               |           |            |      |       |
| KS, WHO     |               |           |            |      |       |
| ASSEMBLED   |               |           |            |      |       |
| THE         |               |           |            |      |       |
| INTERTANK   |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| PANELS.     |               |           |            |      |       |
|             |               |           |            |      |       |
| TASK I.     |               |           |            |      |       |
| FAILURE     |               |           |            |      |       |
| IN          |               |           |            |      |       |
| VESTIGATION |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-\-  |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| A. GENERATE |               |           |            |      |       |
| FLOW CHARTS |               |           |            |      |       |
| TO          |               |           |            |      |       |
| DETERMINE   |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| PROCESSING  |               |           |            |      |       |
| AT THE      |               |           |            |      |       |
|             |               |           |            |      |       |
| SUPPLIERS.  |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/24/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE:   |               |           |            |      |       |
| 10/23/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| FLOW CHARTS |               |           |            |      |       |
| HAVE BEEN   |               |           |            |      |       |
| GENERATED   |               |           |            |      |       |
| FOR BOTH    |               |           |            |      |       |
| NON-CHEM    |               |           |            |      |       |
| MILLED AND  |               |           |            |      |       |
|             |               |           |            |      |       |
| CHEM MILLED |               |           |            |      |       |
| PARTS AND   |               |           |            |      |       |
| HAVE SHOWN  |               |           |            |      |       |
| THE LACK OF |               |           |            |      |       |
| POST        |               |           |            |      |       |
| PROCESSING  |               |           |            |      |       |
|             |               |           |            |      |       |
| INSPECTIONS |               |           |            |      |       |
| OF STOCK    |               |           |            |      |       |
| DIMENSIONS. |               |           |            |      |       |
| REF.: EMAIL |               |           |            |      |       |
| M. HEINSZ   |               |           |            |      |       |
| 10/23/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| B. USING QC |               |           |            |      |       |
| WORK SHEETS |               |           |            |      |       |
| AND OTHER   |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| MATRICES    |               |           |            |      |       |
| INSPECT ALL |               |           |            |      |       |
|             |               |           |            |      |       |
| PARTS &     |               |           |            |      |       |
| ASSEMBLIES  |               |           |            |      |       |
| AT MAF.     |               |           |            |      |       |
| REFERENCE   |               |           |            |      |       |
| ATTACHMENT  |               |           |            |      |       |
| 1 & 3.      |               |           |            |      |       |
|             |               |           |            |      |       |
| DISCREPANT  |               |           |            |      |       |
| PARTS WILL  |               |           |            |      |       |
| BE          |               |           |            |      |       |
| DOCUMENTED  |               |           |            |      |       |
| ON NCD\'S.  |               |           |            |      |       |
|             |               |           |            |      |       |
| PART TYPE   |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-      |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE    |               |           |            |      |       |
| INTERTANKS  |               |           |            |      |       |
| ET-124 &    |               |           |            |      |       |
| 125         |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE    |               |           |            |      |       |
| INTERTANKS  |               |           |            |      |       |
| ET-126 THRU |               |           |            |      |       |
| 129         |               |           |            |      |       |
|             |               |           |            |      |       |
| ASSEMBLED   |               |           |            |      |       |
| PANELS      |               |           |            |      |       |
| ET-130 THRU |               |           |            |      |       |
| 132         |               |           |            |      |       |
|             |               |           |            |      |       |
| LOOSE PARTS |               |           |            |      |       |
| ET-133 & UP |               |           |            |      |       |
| & STOCK     |               |           |            |      |       |
|             |               |           |            |      |       |
| LOOSE PARTS |               |           |            |      |       |
| ET-133 & UP |               |           |            |      |       |
| & STOCK     |               |           |            |      |       |
| (POST       |               |           |            |      |       |
| 18/18/02 @  |               |           |            |      |       |
| 3:00 AM)    |               |           |            |      |       |
|             |               |           |            |      |       |
| LOOSE PARTS |               |           |            |      |       |
| ET-133 & UP |               |           |            |      |       |
| & STOCK     |               |           |            |      |       |
| (POST       |               |           |            |      |       |
| 18/21/02 @  |               |           |            |      |       |
| NOON)       |               |           |            |      |       |
|             |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-    |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| HAT SECTION |               |           |            |      |       |
| OF AFT      |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| (1 PER)     |               |           |            |      |       |
|             |               |           |            |      |       |
| HAT         |               |           |            |      |       |
| SECTIONS OF |               |           |            |      |       |
| FWD & AFT   |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| (2 PER)     |               |           |            |      |       |
|             |               |           |            |      |       |
| HAT         |               |           |            |      |       |
| SECTIONS OF |               |           |            |      |       |
| FWD & AFT   |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| (2 PER)     |               |           |            |      |       |
|             |               |           |            |      |       |
| FWD & AFT - |               |           |            |      |       |
| 5 READING   |               |           |            |      |       |
| PER END     |               |           |            |      |       |
|             |               |           |            |      |       |
| FWD & AFT - |               |           |            |      |       |
| 2 READING   |               |           |            |      |       |
| PER END AT  |               |           |            |      |       |
| LOCATIONS:  |               |           |            |      |       |
| B, C, I &   |               |           |            |      |       |
| H,          |               |           |            |      |       |
| ATTACHMENT  |               |           |            |      |       |
| 1           |               |           |            |      |       |
|             |               |           |            |      |       |
| FWD & AFT - |               |           |            |      |       |
| 1 READING   |               |           |            |      |       |
| PER END AT  |               |           |            |      |       |
| LOCATIONS:  |               |           |            |      |       |
| B, & I,     |               |           |            |      |       |
| ATTACHMENT  |               |           |            |      |       |
| 1           |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| W.          |               |           |            |      |       |
| MA          |               |           |            |      |       |
| TTHEESSEN - |               |           |            |      |       |
| 3741 / D.   |               |           |            |      |       |
| WESTPHAL -  |               |           |            |      |       |
| 3740        |               |           |            |      |       |
|             |               |           |            |      |       |
| C. CULVER - |               |           |            |      |       |
| 3743 / D.   |               |           |            |      |       |
| WESTPHAL -  |               |           |            |      |       |
| 3740        |               |           |            |      |       |
|             |               |           |            |      |       |
| J.          |               |           |            |      |       |
| SPRAY/3724, |               |           |            |      |       |
| R.          |               |           |            |      |       |
| HI          |               |           |            |      |       |
| NSON/3725 - |               |           |            |      |       |
| D. OWENS -  |               |           |            |      |       |
| 3720        |               |           |            |      |       |
|             |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/30/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| C. PROVIDE  |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| PROPERTIES  |               |           |            |      |       |
| OF LOT      |               |           |            |      |       |
| ACCEPTANCE  |               |           |            |      |       |
| TESTING,    |               |           |            |      |       |
|             |               |           |            |      |       |
| IDENTIFYING |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| FROM EACH   |               |           |            |      |       |
| LOT.        |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| MAINTAINS   |               |           |            |      |       |
|             |               |           |            |      |       |
| T           |               |           |            |      |       |
| RACEABILITY |               |           |            |      |       |
| RECORDS.    |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/15/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETED:  |               |           |            |      |       |
| 10/14/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| DATA WAS    |               |           |            |      |       |
| RECEIVED    |               |           |            |      |       |
| FROM        |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| AND HAS     |               |           |            |      |       |
| BEEN        |               |           |            |      |       |
| SUBMITTED   |               |           |            |      |       |
| TO          |               |           |            |      |       |
|             |               |           |            |      |       |
| TECHNICAL   |               |           |            |      |       |
| OPERATIONS  |               |           |            |      |       |
| FOR USE IN  |               |           |            |      |       |
| ANALYSIS OF |               |           |            |      |       |
| INTERTANK   |               |           |            |      |       |
|             |               |           |            |      |       |
| STRESS      |               |           |            |      |       |
| CASES.      |               |           |            |      |       |
|             |               |           |            |      |       |
| D. PROVIDE  |               |           |            |      |       |
| AEROCHEMS   |               |           |            |      |       |
| RECEIVING   |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| DO          |               |           |            |      |       |
| CUMENTATION |               |           |            |      |       |
| OF          |               |           |            |      |       |
|             |               |           |            |      |       |
| INCOMING    |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| (I.E. FROM  |               |           |            |      |       |
| DYNAMIC     |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| FORMING).   |               |           |            |      |       |
|             |               |           |            |      |       |
| HOW MANY    |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| ALONG THE   |               |           |            |      |       |
| LENGTH OF   |               |           |            |      |       |
| THE         |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| ARE         |               |           |            |      |       |
|             |               |           |            |      |       |
| CHECKED? IS |               |           |            |      |       |
| THERE ANY   |               |           |            |      |       |
| DO          |               |           |            |      |       |
| CUMENTATION |               |           |            |      |       |
| ABOUT THE   |               |           |            |      |       |
| RADII?      |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/24/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| DATE:       |               |           |            |      |       |
| 10/23/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| THIS IS THE |               |           |            |      |       |
| PROCESS IN  |               |           |            |      |       |
| WHICH       |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| MEASURES    |               |           |            |      |       |
| AND RECORDS |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| UPON        |               |           |            |      |       |
| RECEIPT     |               |           |            |      |       |
| FROM DMF    |               |           |            |      |       |
| (DYNAMIC    |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| FORMING).   |               |           |            |      |       |
|             |               |           |            |      |       |
| 1\) USING A |               |           |            |      |       |
| ZERO TO     |               |           |            |      |       |
| 1.0\" BALL  |               |           |            |      |       |
| MICROMETER, |               |           |            |      |       |
| ESTABLISH A |               |           |            |      |       |
|             |               |           |            |      |       |
| WITNESS/    |               |           |            |      |       |
| CALIBRATION |               |           |            |      |       |
| POINT       |               |           |            |      |       |
| READING IN  |               |           |            |      |       |
| WHICH TO    |               |           |            |      |       |
| CALIBRATE   |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| ULTRASONIC  |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| TESTER      |               |           |            |      |       |
| (NOVA 810   |               |           |            |      |       |
| OR          |               |           |            |      |       |
| KRAUTKRAMER |               |           |            |      |       |
| BRANSON     |               |           |            |      |       |
|             |               |           |            |      |       |
| CL3DL).     |               |           |            |      |       |
| USING THE   |               |           |            |      |       |
| ULTRASONIC  |               |           |            |      |       |
| DEVICE,     |               |           |            |      |       |
| CHECK ALL   |               |           |            |      |       |
| OF THE FLAT |               |           |            |      |       |
|             |               |           |            |      |       |
| AREAS (BOTH |               |           |            |      |       |
| FLANGES,    |               |           |            |      |       |
| THE SIDE    |               |           |            |      |       |
| WALLS AND   |               |           |            |      |       |
| THE TOP HAT |               |           |            |      |       |
| SECTION).   |               |           |            |      |       |
|             |               |           |            |      |       |
| THEN REPEAT |               |           |            |      |       |
| THAT CHECK  |               |           |            |      |       |
| 7 OR 8      |               |           |            |      |       |
| PLACES      |               |           |            |      |       |
| ALONG THAT  |               |           |            |      |       |
| STRINGER.   |               |           |            |      |       |
|             |               |           |            |      |       |
| 2\) THE     |               |           |            |      |       |
| RADII WILL  |               |           |            |      |       |
| THEN BE     |               |           |            |      |       |
| CHECKED     |               |           |            |      |       |
| USING A     |               |           |            |      |       |
| BALL        |               |           |            |      |       |
| MICROMETER  |               |           |            |      |       |
| AT BOTH     |               |           |            |      |       |
|             |               |           |            |      |       |
| ENDS OF THE |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| (ALL FOUR   |               |           |            |      |       |
| RADII).     |               |           |            |      |       |
|             |               |           |            |      |       |
| 3\) THE     |               |           |            |      |       |
| ACTUAL      |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| IS THEN     |               |           |            |      |       |
| RECORDED IN |               |           |            |      |       |
| THE WORK    |               |           |            |      |       |
|             |               |           |            |      |       |
| ORD         |               |           |            |      |       |
| ER/TRAVELER |               |           |            |      |       |
| IN TWO      |               |           |            |      |       |
| PLACES, ONE |               |           |            |      |       |
| FOR THE     |               |           |            |      |       |
| RANGE       |               |           |            |      |       |
| (MINIMUM    |               |           |            |      |       |
| AND         |               |           |            |      |       |
|             |               |           |            |      |       |
| MAXIMUM     |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| FOUND) FOR  |               |           |            |      |       |
| THE FLAT    |               |           |            |      |       |
| AREAS AND   |               |           |            |      |       |
| THE OTHER   |               |           |            |      |       |
| WOULD       |               |           |            |      |       |
|             |               |           |            |      |       |
| BE THE      |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| FOUND       |               |           |            |      |       |
| DURING THE  |               |           |            |      |       |
| RADII       |               |           |            |      |       |
| CHECK.      |               |           |            |      |       |
|             |               |           |            |      |       |
| 4\) PARTS   |               |           |            |      |       |
| WOULD BE    |               |           |            |      |       |
| SUBJECT TO  |               |           |            |      |       |
| REJECTION   |               |           |            |      |       |
| IF THE      |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| VALUES FELL |               |           |            |      |       |
|             |               |           |            |      |       |
| WITHIN      |               |           |            |      |       |
| 0.001\" OF  |               |           |            |      |       |
| THE ACTUAL  |               |           |            |      |       |
| DRAWING     |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| (THIS IS    |               |           |            |      |       |
| BECAUSE     |               |           |            |      |       |
|             |               |           |            |      |       |
| OF          |               |           |            |      |       |
| SUBSEQUENT  |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| REMOVAL     |               |           |            |      |       |
| DURING      |               |           |            |      |       |
| OTHER       |               |           |            |      |       |
| O           |               |           |            |      |       |
| PERATIONS). |               |           |            |      |       |
|             |               |           |            |      |       |
| REF.: EMAIL |               |           |            |      |       |
| M. HEINSZ   |               |           |            |      |       |
| DATED       |               |           |            |      |       |
| 10/23/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| E. MAP      |               |           |            |      |       |
| O           |               |           |            |      |       |
| UT/IDENTIFY |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
| STRESS      |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| FOR         |               |           |            |      |       |
| DISCREPANT  |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGERS.  |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| D.          |               |           |            |      |       |
| W           |               |           |            |      |       |
| HITCHURCH - |               |           |            |      |       |
| 4440 / E.   |               |           |            |      |       |
| SWEET -4400 |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/23/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE:   |               |           |            |      |       |
| 10/23/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| THE         |               |           |            |      |       |
| FOLLOWING   |               |           |            |      |       |
| AREAS ARE   |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
| STRESS      |               |           |            |      |       |
| LOCATIONS:  |               |           |            |      |       |
|             |               |           |            |      |       |
| PANEL \#    |               |           |            |      |       |
| STRINGER \# |               |           |            |      |       |
|             |               |           |            |      |       |
| 1 S-08,     |               |           |            |      |       |
| S-09, S-10, |               |           |            |      |       |
| S-11        |               |           |            |      |       |
|             |               |           |            |      |       |
| 2 S-01      |               |           |            |      |       |
|             |               |           |            |      |       |
| 3 S-18      |               |           |            |      |       |
|             |               |           |            |      |       |
| 6 S-18      |               |           |            |      |       |
|             |               |           |            |      |       |
| 7 S-01      |               |           |            |      |       |
|             |               |           |            |      |       |
| REF.:       |               |           |            |      |       |
| C           |               |           |            |      |       |
| ONVERSATION |               |           |            |      |       |
| WITH C.     |               |           |            |      |       |
| MCCONNELL & |               |           |            |      |       |
| J. PILET    |               |           |            |      |       |
| 10/23/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| F. PROVIDE  |               |           |            |      |       |
| STATEMENTS  |               |           |            |      |       |
| FROM        |               |           |            |      |       |
| LEARJET     |               |           |            |      |       |
| STATING     |               |           |            |      |       |
| THAT THEY   |               |           |            |      |       |
| CHECKED ALL |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| PRIOR TO    |               |           |            |      |       |
| I           |               |           |            |      |       |
| NSTALLATION |               |           |            |      |       |
| AS          |               |           |            |      |       |
| PREVIOUSLY  |               |           |            |      |       |
| IDENTIFIED  |               |           |            |      |       |
| IN          |               |           |            |      |       |
|             |               |           |            |      |       |
| TELECONS.   |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH 3760 |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/17/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CANCELED    |               |           |            |      |       |
| 10/15/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-        |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| DID NOT     |               |           |            |      |       |
| CHANGE      |               |           |            |      |       |
| THEIR       |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| PROCESS.    |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
|             |               |           |            |      |       |
| PROCESS     |               |           |            |      |       |
| UTILIZED    |               |           |            |      |       |
| FOR         |               |           |            |      |       |
| LOCKHEED    |               |           |            |      |       |
| MARTIN IS   |               |           |            |      |       |
| THE SAME AS |               |           |            |      |       |
| LEARJET.    |               |           |            |      |       |
|             |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| INSPECTED   |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| WHEN THEY   |               |           |            |      |       |
|             |               |           |            |      |       |
| RECEIVED    |               |           |            |      |       |
| FORMED      |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| FROM DMF.   |               |           |            |      |       |
| SU          |               |           |            |      |       |
| BSEQUENTLY, |               |           |            |      |       |
| THEY        |               |           |            |      |       |
| PROCESS     |               |           |            |      |       |
|             |               |           |            |      |       |
| THE PARTS   |               |           |            |      |       |
| AND THE     |               |           |            |      |       |
| CHEM.       |               |           |            |      |       |
| MILLING     |               |           |            |      |       |
| OPERATION   |               |           |            |      |       |
| CAN REDUCE  |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| BELOW       |               |           |            |      |       |
| MINIMUM.    |               |           |            |      |       |
| LEARJET DID |               |           |            |      |       |
| NOT PERFORM |               |           |            |      |       |
| 100%        |               |           |            |      |       |
|             |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| AT AEROCHEM |               |           |            |      |       |
| AS          |               |           |            |      |       |
| PREVIOUSLY  |               |           |            |      |       |
| UNDERSTOOD. |               |           |            |      |       |
| LEARJET     |               |           |            |      |       |
| ONLY        |               |           |            |      |       |
|             |               |           |            |      |       |
| PERFORMED   |               |           |            |      |       |
| SAMPLE      |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| AT AEROCHEM |               |           |            |      |       |
| & UPON      |               |           |            |      |       |
| RECEIPT AT  |               |           |            |      |       |
|             |               |           |            |      |       |
| LEARJET.    |               |           |            |      |       |
| REF. EMAIL  |               |           |            |      |       |
| FROM S.     |               |           |            |      |       |
| PARIKH      |               |           |            |      |       |
| DATED       |               |           |            |      |       |
| 10/14/02.   |               |           |            |      |       |
|             |               |           |            |      |       |
| G. INSPECT  |               |           |            |      |       |
| THREE       |               |           |            |      |       |
| 8091        |               |           |            |      |       |
| 3000413-412 |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| (NON-CHEM   |               |           |            |      |       |
| MILLED). AT |               |           |            |      |       |
|             |               |           |            |      |       |
| FOUR        |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| ON THE      |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| (FWD, AFT,  |               |           |            |      |       |
| MIDDLE X    |               |           |            |      |       |
| 2), OVER A  |               |           |            |      |       |
|             |               |           |            |      |       |
| SIX-INCH    |               |           |            |      |       |
| AREA, TAKE  |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| READINGS TO |               |           |            |      |       |
| A 1\" GRID. |               |           |            |      |       |
| IN          |               |           |            |      |       |
|             |               |           |            |      |       |
| ADDITION,   |               |           |            |      |       |
| TAKE A      |               |           |            |      |       |
| SCRAP       |               |           |            |      |       |
| SECTION OF  |               |           |            |      |       |
| STRINGER,   |               |           |            |      |       |
| USING A     |               |           |            |      |       |
| SIMILAR     |               |           |            |      |       |
|             |               |           |            |      |       |
| GRID TO     |               |           |            |      |       |
| DETERMINE   |               |           |            |      |       |
| THICKNESS,  |               |           |            |      |       |
| THEN STRIP  |               |           |            |      |       |
| THE PART TO |               |           |            |      |       |
| CORRELATE   |               |           |            |      |       |
|             |               |           |            |      |       |
| ACTUAL      |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| WITH        |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| THICKNESS.  |               |           |            |      |       |
|             |               |           |            |      |       |
| DETERMINE   |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| VARIATION.  |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760        |               |           |            |      |       |
|             |               |           |            |      |       |
| D. OWENS -  |               |           |            |      |       |
| 3720        |               |           |            |      |       |
|             |               |           |            |      |       |
| J.          |               |           |            |      |       |
| DESFORGES - |               |           |            |      |       |
| 4410 / E.   |               |           |            |      |       |
| SWEET -     |               |           |            |      |       |
| 4400        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/22/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE:   |               |           |            |      |       |
| 10/22/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-        |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| A 7-INCH    |               |           |            |      |       |
| LONG        |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| REMNANT WAS |               |           |            |      |       |
| OBTAINED    |               |           |            |      |       |
| AND         |               |           |            |      |       |
| MEASURED    |               |           |            |      |       |
| WITH        |               |           |            |      |       |
|             |               |           |            |      |       |
| AND WITHOUT |               |           |            |      |       |
| PRIMER      |               |           |            |      |       |
| (PRIMER PER |               |           |            |      |       |
| STP3003     |               |           |            |      |       |
| TYPE 1).    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
|             |               |           |            |      |       |
| M           |               |           |            |      |       |
| EASUREMENTS |               |           |            |      |       |
| WERE TAKEN  |               |           |            |      |       |
| ON THE TWO  |               |           |            |      |       |
| FLANGES,    |               |           |            |      |       |
| TWO LEGS,   |               |           |            |      |       |
| AND ON      |               |           |            |      |       |
|             |               |           |            |      |       |
| TOP OF THE  |               |           |            |      |       |
| STRINGER AT |               |           |            |      |       |
| 6 LOCATIONS |               |           |            |      |       |
| SPACED      |               |           |            |      |       |
| AP          |               |           |            |      |       |
| PROXIMATELY |               |           |            |      |       |
| 1 INCH      |               |           |            |      |       |
|             |               |           |            |      |       |
| APART DOWN  |               |           |            |      |       |
| THE LENGTH  |               |           |            |      |       |
| OF THE      |               |           |            |      |       |
| STRINGER.   |               |           |            |      |       |
| M           |               |           |            |      |       |
| EASUREMENTS |               |           |            |      |       |
| WERE FIRST  |               |           |            |      |       |
|             |               |           |            |      |       |
| TAKEN USING |               |           |            |      |       |
| A           |               |           |            |      |       |
| MICROMETER  |               |           |            |      |       |
| THEN        |               |           |            |      |       |
| REPEATED    |               |           |            |      |       |
| USING       |               |           |            |      |       |
| ULTRASONIC  |               |           |            |      |       |
|             |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| TO OBTAIN   |               |           |            |      |       |
| THE OVERALL |               |           |            |      |       |
| THICKNESS,  |               |           |            |      |       |
| WHICH       |               |           |            |      |       |
| INCLUDES    |               |           |            |      |       |
| BOTH        |               |           |            |      |       |
|             |               |           |            |      |       |
| METAL AND   |               |           |            |      |       |
| ISL/OSL     |               |           |            |      |       |
| PRIMER.     |               |           |            |      |       |
| PRIMER      |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| ON BOTH     |               |           |            |      |       |
|             |               |           |            |      |       |
| SIDES OF    |               |           |            |      |       |
| THE PART    |               |           |            |      |       |
| WAS THEN    |               |           |            |      |       |
| MEASURED    |               |           |            |      |       |
| WITH AN     |               |           |            |      |       |
| ISOSCOPE.   |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| PRIMER      |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| M           |               |           |            |      |       |
| EASUREMENTS |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| SUBTRACTED  |               |           |            |      |       |
| FROM THE    |               |           |            |      |       |
| OVERALL     |               |           |            |      |       |
|             |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| TO OBTAIN A |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| THICKNESS.  |               |           |            |      |       |
|             |               |           |            |      |       |
| AFTER ALL   |               |           |            |      |       |
| OVERALL     |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| M           |               |           |            |      |       |
| EASUREMENTS |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| OBTAINED,   |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| PRIMER WAS  |               |           |            |      |       |
| REMOVED     |               |           |            |      |       |
| FROM THE    |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| (CHEMICAL   |               |           |            |      |       |
| STRIPPER    |               |           |            |      |       |
| PER         |               |           |            |      |       |
|             |               |           |            |      |       |
| STP3007).   |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| M           |               |           |            |      |       |
| EASUREMENTS |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| REPEATED ON |               |           |            |      |       |
| THE BARE    |               |           |            |      |       |
|             |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| STRINGER.   |               |           |            |      |       |
|             |               |           |            |      |       |
| A           |               |           |            |      |       |
| COMPARISON  |               |           |            |      |       |
| OF THE BARE |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| READINGS TO |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| THICKNESSES |               |           |            |      |       |
| WAS THEN    |               |           |            |      |       |
| PERFORMED.  |               |           |            |      |       |
| IT WAS      |               |           |            |      |       |
| FOUND       |               |           |            |      |       |
|             |               |           |            |      |       |
| THAT THE    |               |           |            |      |       |
| BARE METAL  |               |           |            |      |       |
| THICKNESSES |               |           |            |      |       |
| RANGED      |               |           |            |      |       |
| BETWEEN     |               |           |            |      |       |
| 0.0005 INCH |               |           |            |      |       |
| LESS        |               |           |            |      |       |
|             |               |           |            |      |       |
| THAN TO     |               |           |            |      |       |
| 0.0008 INCH |               |           |            |      |       |
| GREATER     |               |           |            |      |       |
| THAN THE    |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| METAL       |               |           |            |      |       |
|             |               |           |            |      |       |
| T           |               |           |            |      |       |
| HICKNESSES. |               |           |            |      |       |
| THE AVERAGE |               |           |            |      |       |
| OF THE BARE |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| DIFFERENCES |               |           |            |      |       |
| (DELTA)     |               |           |            |      |       |
|             |               |           |            |      |       |
| WAS +0.0003 |               |           |            |      |       |
| INCH.       |               |           |            |      |       |
|             |               |           |            |      |       |
| THREE       |               |           |            |      |       |
| 8091        |               |           |            |      |       |
| 3000413-412 |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| WITH PRIMER |               |           |            |      |       |
| WERE ALSO   |               |           |            |      |       |
| INSPECTED   |               |           |            |      |       |
|             |               |           |            |      |       |
| FOR OVERALL |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| AND PRIMER  |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| AS          |               |           |            |      |       |
| DESCRIBED   |               |           |            |      |       |
| IN          |               |           |            |      |       |
|             |               |           |            |      |       |
| PREVIOUSLY. |               |           |            |      |       |
| THE GROUP   |               |           |            |      |       |
| OF          |               |           |            |      |       |
| M           |               |           |            |      |       |
| EASUREMENTS |               |           |            |      |       |
| WERE TAKEN  |               |           |            |      |       |
| IN FOUR     |               |           |            |      |       |
|             |               |           |            |      |       |
| PLACES PER  |               |           |            |      |       |
| STRINGER:   |               |           |            |      |       |
| AFT END, 7  |               |           |            |      |       |
| FEET FROM   |               |           |            |      |       |
| AFT, 14     |               |           |            |      |       |
| FEET FROM   |               |           |            |      |       |
|             |               |           |            |      |       |
| AFT, AND    |               |           |            |      |       |
| FWD END.    |               |           |            |      |       |
|             |               |           |            |      |       |
| USING THE   |               |           |            |      |       |
| ME          |               |           |            |      |       |
| ASUREMENTS, |               |           |            |      |       |
| AN AVERAGE  |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
|             |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| OBTAINED    |               |           |            |      |       |
| FOR EACH OF |               |           |            |      |       |
| THE FOUR    |               |           |            |      |       |
| MEASUREMENT |               |           |            |      |       |
| GROUPS. THE |               |           |            |      |       |
|             |               |           |            |      |       |
| +0.0003     |               |           |            |      |       |
| INCH BARE   |               |           |            |      |       |
| METAL DELTA |               |           |            |      |       |
| WAS THEN    |               |           |            |      |       |
| APPLIED TO  |               |           |            |      |       |
| THESE       |               |           |            |      |       |
| AVERAGE     |               |           |            |      |       |
|             |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| THICKNESSES |               |           |            |      |       |
| TO OBTAIN   |               |           |            |      |       |
| AN ADJUSTED |               |           |            |      |       |
| BARE METAL  |               |           |            |      |       |
|             |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| FOR EACH OF |               |           |            |      |       |
| THE FOUR    |               |           |            |      |       |
| MEASUREMENT |               |           |            |      |       |
| GROUPS ON   |               |           |            |      |       |
| EACH OF     |               |           |            |      |       |
|             |               |           |            |      |       |
| THE THREE   |               |           |            |      |       |
| STRINGERS.  |               |           |            |      |       |
|             |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| RESULTS OF  |               |           |            |      |       |
| THE THREE   |               |           |            |      |       |
| STRINGERS:  |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGER #1 |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-\-  |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE AFT |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0574 VS   |               |           |            |      |       |
| AVERAGE AFT |               |           |            |      |       |
| ADJUSTED    |               |           |            |      |       |
| THK         |               |           |            |      |       |
|             |               |           |            |      |       |
| = 0.0577    |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE 7   |               |           |            |      |       |
| FT          |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0588 VS   |               |           |            |      |       |
| AVERAGE 7   |               |           |            |      |       |
| FT ADJUSTED |               |           |            |      |       |
|             |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0591      |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE 14  |               |           |            |      |       |
| FT          |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0580 VS   |               |           |            |      |       |
| AVERAGE 14  |               |           |            |      |       |
| FT ADJUSTED |               |           |            |      |       |
|             |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0583      |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE FWD |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0574 VS   |               |           |            |      |       |
| AVERAGE FWD |               |           |            |      |       |
| ADJUSTED    |               |           |            |      |       |
| THK         |               |           |            |      |       |
|             |               |           |            |      |       |
| = 0.0577    |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGER #2 |               |           |            |      |       |
|             |               |           |            |      |       |
| \           |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE AFT |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0582 VS   |               |           |            |      |       |
| AVERAGE AFT |               |           |            |      |       |
| ADJUSTED    |               |           |            |      |       |
| THK         |               |           |            |      |       |
|             |               |           |            |      |       |
| = 0.0585    |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE 7   |               |           |            |      |       |
| FT          |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0583 VS   |               |           |            |      |       |
| AVERAGE 7   |               |           |            |      |       |
| FT ADJUSTED |               |           |            |      |       |
|             |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0586      |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE 14  |               |           |            |      |       |
| FT          |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0587 VS   |               |           |            |      |       |
| AVERAGE 14  |               |           |            |      |       |
| FT ADJUSTED |               |           |            |      |       |
|             |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0590      |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE FWD |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0582 VS   |               |           |            |      |       |
| AVERAGE FWD |               |           |            |      |       |
| ADJUSTED    |               |           |            |      |       |
| THK         |               |           |            |      |       |
|             |               |           |            |      |       |
| = 0.0585    |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGER #3 |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-\-  |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE AFT |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0580 VS   |               |           |            |      |       |
| AVERAGE AFT |               |           |            |      |       |
| ADJUSTED    |               |           |            |      |       |
| THK         |               |           |            |      |       |
|             |               |           |            |      |       |
| = 0.0583    |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE 7   |               |           |            |      |       |
| FT          |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0585 VS   |               |           |            |      |       |
| AVERAGE 7   |               |           |            |      |       |
| FT ADJUSTED |               |           |            |      |       |
|             |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0588      |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE 14  |               |           |            |      |       |
| FT          |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0589 VS   |               |           |            |      |       |
| AVERAGE 14  |               |           |            |      |       |
| FT ADJUSTED |               |           |            |      |       |
|             |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0592      |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE FWD |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0583 VS   |               |           |            |      |       |
| AVERAGE FWD |               |           |            |      |       |
| ADJUSTED    |               |           |            |      |       |
| THK         |               |           |            |      |       |
|             |               |           |            |      |       |
| = 0.0586    |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGER #1 |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| MEASURED IN |               |           |            |      |       |
| 120         |               |           |            |      |       |
| LOCATIONS,  |               |           |            |      |       |
| 112 OF      |               |           |            |      |       |
| THESE WERE  |               |           |            |      |       |
|             |               |           |            |      |       |
| UNDER       |               |           |            |      |       |
| 0.0590      |               |           |            |      |       |
| (DRAWING    |               |           |            |      |       |
| MINIMUM).   |               |           |            |      |       |
| AFTER THE   |               |           |            |      |       |
| +0.0003     |               |           |            |      |       |
| ADJUSTMENT  |               |           |            |      |       |
|             |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| APPLIED, 18 |               |           |            |      |       |
| OF THE 112  |               |           |            |      |       |
| DEFECT      |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| GREATER     |               |           |            |      |       |
| THAN        |               |           |            |      |       |
|             |               |           |            |      |       |
| 0.0590      |               |           |            |      |       |
| INCH.       |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGER #2 |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| MEASURED IN |               |           |            |      |       |
| 115         |               |           |            |      |       |
| LOCATIONS,  |               |           |            |      |       |
| 97 OF THESE |               |           |            |      |       |
| WERE        |               |           |            |      |       |
|             |               |           |            |      |       |
| UNDER       |               |           |            |      |       |
| 0.0590 INCH |               |           |            |      |       |
| THICKNESS.  |               |           |            |      |       |
| AFTER THE   |               |           |            |      |       |
| +0.0003     |               |           |            |      |       |
| ADJUSTMENT  |               |           |            |      |       |
| WAS         |               |           |            |      |       |
|             |               |           |            |      |       |
| APPLIED, 21 |               |           |            |      |       |
| OF THE 97   |               |           |            |      |       |
| DEFECT      |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| GREATER     |               |           |            |      |       |
| THAN 0.0590 |               |           |            |      |       |
|             |               |           |            |      |       |
| INCH.       |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGER #3 |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| MEASURED IN |               |           |            |      |       |
| 115         |               |           |            |      |       |
| LOCATIONS,  |               |           |            |      |       |
| 94 OF THESE |               |           |            |      |       |
| WERE        |               |           |            |      |       |
|             |               |           |            |      |       |
| UNDER       |               |           |            |      |       |
| 0.0590 INCH |               |           |            |      |       |
| THICKNESS.  |               |           |            |      |       |
| AFTER THE   |               |           |            |      |       |
| +0.0003     |               |           |            |      |       |
| ADJUSTMENT  |               |           |            |      |       |
| WAS         |               |           |            |      |       |
|             |               |           |            |      |       |
| APPLIED, 26 |               |           |            |      |       |
| OF THE 94   |               |           |            |      |       |
| DEFECT      |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| GREATER     |               |           |            |      |       |
| THAN 0.0590 |               |           |            |      |       |
|             |               |           |            |      |       |
| INCH.       |               |           |            |      |       |
|             |               |           |            |      |       |
| AD          |               |           |            |      |       |
| DITIONALLY, |               |           |            |      |       |
| THE         |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| M           |               |           |            |      |       |
| EASUREMENTS |               |           |            |      |       |
| FROM EACH   |               |           |            |      |       |
| OF THE      |               |           |            |      |       |
| THREE       |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| INDICATE    |               |           |            |      |       |
| THE PARTS   |               |           |            |      |       |
| ARE         |               |           |            |      |       |
| THINNEST BY |               |           |            |      |       |
| 0.0001 TO   |               |           |            |      |       |
| 0.0014      |               |           |            |      |       |
|             |               |           |            |      |       |
| INCH NEAR   |               |           |            |      |       |
| THE FWD AND |               |           |            |      |       |
| AFT ENDS OF |               |           |            |      |       |
| THE PART.   |               |           |            |      |       |
|             |               |           |            |      |       |
| REF.: EMAIL |               |           |            |      |       |
| L DESFORGES |               |           |            |      |       |
| 10/21/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| H. INSPECT  |               |           |            |      |       |
| 8091        |               |           |            |      |       |
| 3000413-424 |               |           |            |      |       |
| & 428       |               |           |            |      |       |
| STRINGERS,  |               |           |            |      |       |
| CHEM        |               |           |            |      |       |
| MILLED,     |               |           |            |      |       |
| 2024 FOR    |               |           |            |      |       |
|             |               |           |            |      |       |
| THINNING.   |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-      |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| PART TYPE   |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-    |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE    |               |           |            |      |       |
| INTERTANKS  |               |           |            |      |       |
| ET-124 &    |               |           |            |      |       |
| 125         |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE    |               |           |            |      |       |
| INTERTANKS  |               |           |            |      |       |
| ET-126 THRU |               |           |            |      |       |
| 129         |               |           |            |      |       |
|             |               |           |            |      |       |
| ASSEMBLED   |               |           |            |      |       |
| PANELS      |               |           |            |      |       |
| ET-130 THRU |               |           |            |      |       |
| 132         |               |           |            |      |       |
|             |               |           |            |      |       |
| LOOSE PARTS |               |           |            |      |       |
| ET-133 & UP |               |           |            |      |       |
| & STOCK     |               |           |            |      |       |
|             |               |           |            |      |       |
| LOOSE PARTS |               |           |            |      |       |
| ET-133 & UP |               |           |            |      |       |
| & STOCK     |               |           |            |      |       |
| (POST       |               |           |            |      |       |
| 18/21/02 @  |               |           |            |      |       |
| NOON)       |               |           |            |      |       |
|             |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-\-  |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| HAT         |               |           |            |      |       |
|             |               |           |            |      |       |
| SECTION OF  |               |           |            |      |       |
| AFT         |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| (1 PER)     |               |           |            |      |       |
|             |               |           |            |      |       |
| HAT         |               |           |            |      |       |
| SECTIONS OF |               |           |            |      |       |
| FWD & AFT   |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| (2 PER)     |               |           |            |      |       |
|             |               |           |            |      |       |
| HAT         |               |           |            |      |       |
| SECTIONS OF |               |           |            |      |       |
| FWD & AFT   |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| (2 PER)     |               |           |            |      |       |
|             |               |           |            |      |       |
| FWD & AFT - |               |           |            |      |       |
| 2 READING   |               |           |            |      |       |
| PER END AT  |               |           |            |      |       |
| LOCATIONS:  |               |           |            |      |       |
| B, C, I &   |               |           |            |      |       |
| H,          |               |           |            |      |       |
| ATTACHMENT  |               |           |            |      |       |
| 1           |               |           |            |      |       |
|             |               |           |            |      |       |
| FWD & AFT - |               |           |            |      |       |
| 1 READING   |               |           |            |      |       |
| PER END AT  |               |           |            |      |       |
| LOCATIONS:  |               |           |            |      |       |
| B, & I,     |               |           |            |      |       |
| ATTACHMENT  |               |           |            |      |       |
| 1           |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M.          |               |           |            |      |       |
| HEI         |               |           |            |      |       |
| NSZ-3761/S. |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760 D.     |               |           |            |      |       |
| OWENS -     |               |           |            |      |       |
| 3720        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/30/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| I. ISSUE    |               |           |            |      |       |
| SCAR TO     |               |           |            |      |       |
| ADDRESS     |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| VIOLATIONS. |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| J.          |               |           |            |      |       |
| MAXWELL -   |               |           |            |      |       |
| 3741 /D.    |               |           |            |      |       |
| WESTPHAL -  |               |           |            |      |       |
| 3740        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/14/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE:   |               |           |            |      |       |
| 10/14/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| SCAR        |               |           |            |      |       |
| 2002-071    |               |           |            |      |       |
| HAS BEEN    |               |           |            |      |       |
| ISSUED WITH |               |           |            |      |       |
| AN 11-14-02 |               |           |            |      |       |
| RESPONSE    |               |           |            |      |       |
| DATE.       |               |           |            |      |       |
|             |               |           |            |      |       |
| REF.; EMAIL |               |           |            |      |       |
| J. MAXWELL  |               |           |            |      |       |
| 10/23/02.   |               |           |            |      |       |
|             |               |           |            |      |       |
| J. DEVELO   |               |           |            |      |       |
| AND         |               |           |            |      |       |
| IMPLEMENT   |               |           |            |      |       |
| AN ACTION   |               |           |            |      |       |
| PLAN TO     |               |           |            |      |       |
| UNDERSTAND  |               |           |            |      |       |
| AND         |               |           |            |      |       |
| DOCUMENT    |               |           |            |      |       |
|             |               |           |            |      |       |
| RESULTS OF  |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| PROCESSING  |               |           |            |      |       |
| (NON-CHEM.  |               |           |            |      |       |
| MILLED &    |               |           |            |      |       |
| CHEM.       |               |           |            |      |       |
|             |               |           |            |      |       |
| MILLED) PER |               |           |            |      |       |
| APPROVED    |               |           |            |      |       |
| PLANNING TO |               |           |            |      |       |
| DETERMINE   |               |           |            |      |       |
| EFFECTS OF  |               |           |            |      |       |
|             |               |           |            |      |       |
| PROCESSING  |               |           |            |      |       |
| ON FINAL    |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS.  |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 2/14/03     |               |           |            |      |       |
|             |               |           |            |      |       |
| K. AEROCHEM |               |           |            |      |       |
| TO PROCESS  |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| USING       |               |           |            |      |       |
| STRINGENT   |               |           |            |      |       |
| PROCESS     |               |           |            |      |       |
| CONTROL     |               |           |            |      |       |
|             |               |           |            |      |       |
| TO ACHIEVE  |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| REMOVAL AND |               |           |            |      |       |
| TO ASSESS   |               |           |            |      |       |
| CAPABILITY  |               |           |            |      |       |
|             |               |           |            |      |       |
| AND         |               |           |            |      |       |
| FEASIBILITY |               |           |            |      |       |
| OF THE      |               |           |            |      |       |
| PROCESS.    |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 2/14/03     |               |           |            |      |       |
|             |               |           |            |      |       |
| L. DEVELOP  |               |           |            |      |       |
| FLEET       |               |           |            |      |       |
| CLEARANCE   |               |           |            |      |       |
| RATIONALE.  |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| J. PILET -  |               |           |            |      |       |
| 4130 / F.   |               |           |            |      |       |
| MANTO -     |               |           |            |      |       |
| 4100        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/31/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| STATUS:     |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| ET-116 & UP |               |           |            |      |       |
| HAS BEEN    |               |           |            |      |       |
| GENERATED.  |               |           |            |      |       |
|             |               |           |            |      |       |
| CAUSE       |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\--   |               |           |            |      |       |
|             |               |           |            |      |       |
| PENDING     |               |           |            |      |       |
| IN          |               |           |            |      |       |
| VESTIGATION |               |           |            |      |       |
| RESULTS     |               |           |            |      |       |
|             |               |           |            |      |       |
| TASK II.    |               |           |            |      |       |
| CORRECTIVE  |               |           |            |      |       |
| ACTION      |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| PENDING     |               |           |            |      |       |
| COMPLETION  |               |           |            |      |       |
| OF          |               |           |            |      |       |
| IN          |               |           |            |      |       |
| VESTIGATION |               |           |            |      |       |
|             |               |           |            |      |       |
| TASK III.   |               |           |            |      |       |
| CLEARANCE   |               |           |            |      |       |
| OF          |               |           |            |      |       |
| EF          |               |           |            |      |       |
| FECTIVITIES |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-\   |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| ET-93 & 94  |               |           |            |      |       |
|             |               |           |            |      |       |
| PENDING     |               |           |            |      |       |
| COMPLETION  |               |           |            |      |       |
| OF FLEET    |               |           |            |      |       |
| CLEARANCE   |               |           |            |      |       |
| TASK (I.L)  |               |           |            |      |       |
|             |               |           |            |      |       |
| ET- 116 &   |               |           |            |      |       |
| UP          |               |           |            |      |       |
|             |               |           |            |      |       |
| STRESS      |               |           |            |      |       |
| ANALYSIS    |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| PERFORMED   |               |           |            |      |       |
| USING LOWER |               |           |            |      |       |
| BOUND AND   |               |           |            |      |       |
|             |               |           |            |      |       |
| ST          |               |           |            |      |       |
| ATISTICALLY |               |           |            |      |       |
| DERIVED (3  |               |           |            |      |       |
| SIGMA LOW)  |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| VALUES      |               |           |            |      |       |
|             |               |           |            |      |       |
| FOR FORMED  |               |           |            |      |       |
| AL 2090     |               |           |            |      |       |
| (0.053 IN   |               |           |            |      |       |
| LOWER BOUND |               |           |            |      |       |
| VS. 0.059   |               |           |            |      |       |
| IN          |               |           |            |      |       |
|             |               |           |            |      |       |
| DRAWING     |               |           |            |      |       |
| MIN.        |               |           |            |      |       |
| R           |               |           |            |      |       |
| EQUIREMENT) |               |           |            |      |       |
| AND FORMED  |               |           |            |      |       |
| AL 2024     |               |           |            |      |       |
|             |               |           |            |      |       |
| (0.065 IN   |               |           |            |      |       |
| LOWER BOUND |               |           |            |      |       |
| VS. 0.067   |               |           |            |      |       |
| IN DRAWING  |               |           |            |      |       |
| MIN.        |               |           |            |      |       |
|             |               |           |            |      |       |
| R           |               |           |            |      |       |
| EQUIREMENT) |               |           |            |      |       |
| INTERTANK   |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| POTENTIALLY |               |           |            |      |       |
|             |               |           |            |      |       |
| INSTALLED   |               |           |            |      |       |
| ON ET-116   |               |           |            |      |       |
| AND UP. THE |               |           |            |      |       |
| ANALYSIS,   |               |           |            |      |       |
| WHICH       |               |           |            |      |       |
|             |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| CON         |               |           |            |      |       |
| SERVATIVELY |               |           |            |      |       |
| CORRELATED  |               |           |            |      |       |
| TO          |               |           |            |      |       |
| STRUCTURAL  |               |           |            |      |       |
| TEST        |               |           |            |      |       |
|             |               |           |            |      |       |
| RESULTS,    |               |           |            |      |       |
| SHOWS       |               |           |            |      |       |
| ADEQUATE    |               |           |            |      |       |
| ULTIMATE    |               |           |            |      |       |
| MARGINS OF  |               |           |            |      |       |
| SAFETY      |               |           |            |      |       |
|             |               |           |            |      |       |
| ABOVE THE   |               |           |            |      |       |
| APPLICABLE  |               |           |            |      |       |
| SAFETY      |               |           |            |      |       |
| FACTOR      |               |           |            |      |       |
| R           |               |           |            |      |       |
| EQUIREMENTS |               |           |            |      |       |
| (SF         |               |           |            |      |       |
|             |               |           |            |      |       |
| REQ\'D =    |               |           |            |      |       |
| 1.29 AND    |               |           |            |      |       |
| 1.40) FOR   |               |           |            |      |       |
| THE         |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
|             |               |           |            |      |       |
| USING THE   |               |           |            |      |       |
| LOWER BOUND |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| VALUES.     |               |           |            |      |       |
| USING THE   |               |           |            |      |       |
|             |               |           |            |      |       |
| MORE        |               |           |            |      |       |
| REALISTIC   |               |           |            |      |       |
| ST          |               |           |            |      |       |
| ATISTICALLY |               |           |            |      |       |
| DERIVED     |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| OF          |               |           |            |      |       |
|             |               |           |            |      |       |
| 0.0566 (3   |               |           |            |      |       |
| SIGMA LOW)  |               |           |            |      |       |
| FOR THE AL  |               |           |            |      |       |
| 2090        |               |           |            |      |       |
| STRINGERS,  |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| ANALYSIS    |               |           |            |      |       |
| SHOWS A     |               |           |            |      |       |
| MINIMUM FS  |               |           |            |      |       |
| = 1.48 VS.  |               |           |            |      |       |
| THE         |               |           |            |      |       |
| REQUIRED    |               |           |            |      |       |
|             |               |           |            |      |       |
| 1.40 FOR    |               |           |            |      |       |
| THE         |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
| LOCATION.   |               |           |            |      |       |
| AL 2024     |               |           |            |      |       |
| MARGINS AND |               |           |            |      |       |
|             |               |           |            |      |       |
| FS ARE      |               |           |            |      |       |
| GREATER     |               |           |            |      |       |
| THAN THOSE  |               |           |            |      |       |
| FOR AL      |               |           |            |      |       |
| 2090. THE   |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
|             |               |           |            |      |       |
| FAILURE     |               |           |            |      |       |
| MODE FOR    |               |           |            |      |       |
| THE         |               |           |            |      |       |
| AFFECTED    |               |           |            |      |       |
| PARTS IS    |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
|             |               |           |            |      |       |
| COLUMN      |               |           |            |      |       |
| BUCKLING.   |               |           |            |      |       |
| THE         |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
| HARDWARE    |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| ARE         |               |           |            |      |       |
|             |               |           |            |      |       |
| LOCATED IN  |               |           |            |      |       |
| THE AFT END |               |           |            |      |       |
| OF PANEL 1  |               |           |            |      |       |
| AT THE +Z   |               |           |            |      |       |
| AXIS AND    |               |           |            |      |       |
|             |               |           |            |      |       |
| AT THE      |               |           |            |      |       |
| FORWARD     |               |           |            |      |       |
| ENDS OF     |               |           |            |      |       |
| PANELS 2/3  |               |           |            |      |       |
| AND 6/7     |               |           |            |      |       |
| ADJACENT TO |               |           |            |      |       |
|             |               |           |            |      |       |
| THE THRUST  |               |           |            |      |       |
| PANELS.     |               |           |            |      |       |
|             |               |           |            |      |       |
| TASK IV.    |               |           |            |      |       |
| CAPS        |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| SUMMARY     |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-    |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| PENDING     |               |           |            |      |       |
| COMPLETION  |               |           |            |      |       |
| OF          |               |           |            |      |       |
| IN          |               |           |            |      |       |
| VESTIGATION |               |           |            |      |       |
|             |               |           |            |      |       |
| ATTACHMENT  |               |           |            |      |       |
| #1          |               |           |            |      |       |
|             |               |           |            |      |       |
| DISCREPANT  |               |           |            |      |       |
| PART & DASH |               |           |            |      |       |
| #S          |               |           |            |      |       |
|             |               |           |            |      |       |
| CHEM-MILLED |               |           |            |      |       |
| 2090P/N     |               |           |            |      |       |
| 80913000413 |               |           |            |      |       |
| (43):       |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| -401, -403, |               |           |            |      |       |
| -406, -413, |               |           |            |      |       |
| -414, -418, |               |           |            |      |       |
| -422, -423, |               |           |            |      |       |
|             |               |           |            |      |       |
| -424, -425, |               |           |            |      |       |
| -426, -427, |               |           |            |      |       |
| -428, -431, |               |           |            |      |       |
| -434, -435, |               |           |            |      |       |
|             |               |           |            |      |       |
| -436, -437, |               |           |            |      |       |
| -438, -441, |               |           |            |      |       |
| -442, -443, |               |           |            |      |       |
| -444, -445, |               |           |            |      |       |
|             |               |           |            |      |       |
| -446, -448, |               |           |            |      |       |
| -452, -454, |               |           |            |      |       |
| -456, -457, |               |           |            |      |       |
| -458, -462, |               |           |            |      |       |
|             |               |           |            |      |       |
| -463, -465, |               |           |            |      |       |
| -466, -467, |               |           |            |      |       |
| -468, -471, |               |           |            |      |       |
| -472, -473, |               |           |            |      |       |
|             |               |           |            |      |       |
| -474, -475, |               |           |            |      |       |
| -476        |               |           |            |      |       |
|             |               |           |            |      |       |
| NON-        |               |           |            |      |       |
| CHEM-MILLED |               |           |            |      |       |
| 2090        |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-      |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| P/N         |               |           |            |      |       |
| 80913000413 |               |           |            |      |       |
| (9)         |               |           |            |      |       |
|             |               |           |            |      |       |
| -412, -415, |               |           |            |      |       |
| -417, -432, |               |           |            |      |       |
| -451, -453, |               |           |            |      |       |
| -455, -461, |               |           |            |      |       |
|             |               |           |            |      |       |
| -464        |               |           |            |      |       |
|             |               |           |            |      |       |
| 2024        |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\--     |               |           |            |      |       |
|             |               |           |            |      |       |
| P/N         |               |           |            |      |       |
| 80913000413 |               |           |            |      |       |
| (2)         |               |           |            |      |       |
|             |               |           |            |      |       |
| -424 & -428 |               |           |            |      |       |
|             |               |           |            |      |       |
| 1           |               |           |            |      |       |
| 1/18/2002 - |               |           |            |      |       |
| CONTRACTOR  |               |           |            |      |       |
| SUBMITTED   |               |           |            |      |       |
| EXTENSION   |               |           |            |      |       |
| FOR ET-93 & |               |           |            |      |       |
| 94 REQUEST  |               |           |            |      |       |
| AS          |               |           |            |      |       |
|             |               |           |            |      |       |
| FOLLOWS:    |               |           |            |      |       |
|             |               |           |            |      |       |
| GENERAL     |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| DURING      |               |           |            |      |       |
| IN-PROCESS  |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| AT AEROCHEM |               |           |            |      |       |
| AN          |               |           |            |      |       |
| INSPECTOR   |               |           |            |      |       |
| NOTED SOME  |               |           |            |      |       |
| PARTS       |               |           |            |      |       |
|             |               |           |            |      |       |
| BELOW       |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| REQUIREMENT |               |           |            |      |       |
| IN AN AREA  |               |           |            |      |       |
| THAT HAD    |               |           |            |      |       |
| BEEN        |               |           |            |      |       |
| BLENDED     |               |           |            |      |       |
|             |               |           |            |      |       |
| (REWORKED)  |               |           |            |      |       |
| TO REMOVE A |               |           |            |      |       |
| SURFACE     |               |           |            |      |       |
| DEFECT. THE |               |           |            |      |       |
| SAME        |               |           |            |      |       |
| INSPECTOR,  |               |           |            |      |       |
| WHILE       |               |           |            |      |       |
|             |               |           |            |      |       |
| PERFORMING  |               |           |            |      |       |
| RECEIVING   |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| ACTIVITY ON |               |           |            |      |       |
| INCOMING    |               |           |            |      |       |
| PARTS FROM  |               |           |            |      |       |
| DMF         |               |           |            |      |       |
|             |               |           |            |      |       |
| (DYNAMIC    |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| FORMING,    |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| FORMING     |               |           |            |      |       |
| SUB-TIER),  |               |           |            |      |       |
| FOUND SOME  |               |           |            |      |       |
| PARTS       |               |           |            |      |       |
|             |               |           |            |      |       |
| THAT WERE   |               |           |            |      |       |
| AT THE LOW  |               |           |            |      |       |
| SIDE OF THE |               |           |            |      |       |
| TOLERANCE.  |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| INITIATED   |               |           |            |      |       |
| NCD         |               |           |            |      |       |
|             |               |           |            |      |       |
| N022653 FOR |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| VIOLATIONS  |               |           |            |      |       |
| FOR P/N     |               |           |            |      |       |
| 80913000413 |               |           |            |      |       |
|             |               |           |            |      |       |
| SERIES      |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| AS RECEIVED |               |           |            |      |       |
| FROM DMF.   |               |           |            |      |       |
| PER         |               |           |            |      |       |
| ENGINEERING |               |           |            |      |       |
| DRAWING,    |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| REQUIRED    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| IS 0.063    |               |           |            |      |       |
| INCHES PLUS |               |           |            |      |       |
| OR MINUS    |               |           |            |      |       |
| 0.004       |               |           |            |      |       |
| INCHES.     |               |           |            |      |       |
|             |               |           |            |      |       |
| ADDITIONAL  |               |           |            |      |       |
| PROCESSING  |               |           |            |      |       |
| AT AEROCHEM |               |           |            |      |       |
| CAN REMOVE  |               |           |            |      |       |
| A MAXIMUM   |               |           |            |      |       |
| OF 0.0012   |               |           |            |      |       |
| INCH        |               |           |            |      |       |
|             |               |           |            |      |       |
| FOR         |               |           |            |      |       |
| CHEM-MILLED |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| AND 0.0028  |               |           |            |      |       |
| INCHES FOR  |               |           |            |      |       |
| NON-        |               |           |            |      |       |
| CHEM-MILLED |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGERS.  |               |           |            |      |       |
| BASED ON    |               |           |            |      |       |
| THE         |               |           |            |      |       |
| FINDINGS AT |               |           |            |      |       |
| AEROCHEM, A |               |           |            |      |       |
| STOCK CHECK |               |           |            |      |       |
| WAS         |               |           |            |      |       |
|             |               |           |            |      |       |
| CONDUCTED   |               |           |            |      |       |
| AT MAF TO   |               |           |            |      |       |
| INSPECT     |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS.  |               |           |            |      |       |
| THE         |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| FOUND       |               |           |            |      |       |
|             |               |           |            |      |       |
| SOME        |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| TO BE       |               |           |            |      |       |
| UNDERSIZE.  |               |           |            |      |       |
| A REVIEW OF |               |           |            |      |       |
| THE         |               |           |            |      |       |
| MA          |               |           |            |      |       |
| NUFACTURING |               |           |            |      |       |
| RECORDS     |               |           |            |      |       |
|             |               |           |            |      |       |
| AT AEROCHEM |               |           |            |      |       |
| REVEALED    |               |           |            |      |       |
| THAT THE    |               |           |            |      |       |
| STOCK       |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| IS CHECKED  |               |           |            |      |       |
| WHEN        |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
|             |               |           |            |      |       |
| RECEIVES    |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| FROM DMF.   |               |           |            |      |       |
| AFTER       |               |           |            |      |       |
| PROCESSING  |               |           |            |      |       |
| AT          |               |           |            |      |       |
| AEROCHEM,   |               |           |            |      |       |
| THE STOCK   |               |           |            |      |       |
|             |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| IS NOT      |               |           |            |      |       |
| CHECKED     |               |           |            |      |       |
| AGAIN.      |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| MADE FROM   |               |           |            |      |       |
| MATERIAL ON |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| LOWER END   |               |           |            |      |       |
| OF THE      |               |           |            |      |       |
| TOLERANCE   |               |           |            |      |       |
| COULD BE    |               |           |            |      |       |
| UNDERSIZE   |               |           |            |      |       |
| AFTER       |               |           |            |      |       |
| PROCESSING. |               |           |            |      |       |
|             |               |           |            |      |       |
| MA          |               |           |            |      |       |
| NUFACTURING |               |           |            |      |       |
| DO          |               |           |            |      |       |
| CUMENTATION |               |           |            |      |       |
| IS BEING    |               |           |            |      |       |
| REVIEWED TO |               |           |            |      |       |
| DETERMINE   |               |           |            |      |       |
| STOCK       |               |           |            |      |       |
|             |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| AT THE      |               |           |            |      |       |
| START OF    |               |           |            |      |       |
| THE         |               |           |            |      |       |
| PROCESSING  |               |           |            |      |       |
| CYCLE.      |               |           |            |      |       |
| UNLIKE      |               |           |            |      |       |
| SIXTH BUY   |               |           |            |      |       |
|             |               |           |            |      |       |
| HARDWARE    |               |           |            |      |       |
| WHERE MAF   |               |           |            |      |       |
| ASSEMBLED   |               |           |            |      |       |
| THE         |               |           |            |      |       |
| INTERTANK   |               |           |            |      |       |
| STRINGERS,  |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| ALSO        |               |           |            |      |       |
|             |               |           |            |      |       |
| M           |               |           |            |      |       |
| ANUFACTURED |               |           |            |      |       |
| THE         |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| FOR 5TH     |               |           |            |      |       |
| BUY, THEN   |               |           |            |      |       |
| THEY WERE   |               |           |            |      |       |
| SENT TO     |               |           |            |      |       |
| LEARJET     |               |           |            |      |       |
|             |               |           |            |      |       |
| IN WICHITA, |               |           |            |      |       |
| KS, WHO     |               |           |            |      |       |
| ASSEMBLED   |               |           |            |      |       |
| THE         |               |           |            |      |       |
| INTERTANK   |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| PANELS.     |               |           |            |      |       |
|             |               |           |            |      |       |
| TASK I.     |               |           |            |      |       |
| FAILURE     |               |           |            |      |       |
| IN          |               |           |            |      |       |
| VESTIGATION |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-\-  |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| A. GENERATE |               |           |            |      |       |
| FLOW CHARTS |               |           |            |      |       |
| TO          |               |           |            |      |       |
| DETERMINE   |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| PROCESSING  |               |           |            |      |       |
| AT THE      |               |           |            |      |       |
|             |               |           |            |      |       |
| SUPPLIERS.  |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/24/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE:   |               |           |            |      |       |
| 10/23/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| FLOW CHARTS |               |           |            |      |       |
| HAVE BEEN   |               |           |            |      |       |
| GENERATED   |               |           |            |      |       |
| FOR BOTH    |               |           |            |      |       |
| NON-CHEM    |               |           |            |      |       |
| MILLED AND  |               |           |            |      |       |
|             |               |           |            |      |       |
| CHEM MILLED |               |           |            |      |       |
| PARTS AND   |               |           |            |      |       |
| HAVE SHOWN  |               |           |            |      |       |
| THE LACK OF |               |           |            |      |       |
| POST        |               |           |            |      |       |
| PROCESSING  |               |           |            |      |       |
|             |               |           |            |      |       |
| INSPECTIONS |               |           |            |      |       |
| OF STOCK    |               |           |            |      |       |
| DIMENSIONS. |               |           |            |      |       |
| REF.: EMAIL |               |           |            |      |       |
| M. HEINSZ   |               |           |            |      |       |
| 10/23/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| B. USING QC |               |           |            |      |       |
| WORK SHEETS |               |           |            |      |       |
| AND OTHER   |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| MATRICES,   |               |           |            |      |       |
| INSPECT ALL |               |           |            |      |       |
|             |               |           |            |      |       |
| 2090 PARTS  |               |           |            |      |       |
| &           |               |           |            |      |       |
| ASSEMBLIES  |               |           |            |      |       |
| AT MAF.     |               |           |            |      |       |
| REFERENCE   |               |           |            |      |       |
| ATTACHMENT  |               |           |            |      |       |
| 1 & 3.      |               |           |            |      |       |
|             |               |           |            |      |       |
| DISCREPANT  |               |           |            |      |       |
| PARTS WILL  |               |           |            |      |       |
| BE          |               |           |            |      |       |
| DOCUMENTED  |               |           |            |      |       |
| ON NCD\'S.  |               |           |            |      |       |
|             |               |           |            |      |       |
| PART TYPE   |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-      |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE    |               |           |            |      |       |
| INTERTANKS  |               |           |            |      |       |
| ET-124 &    |               |           |            |      |       |
| 125         |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE    |               |           |            |      |       |
| INTERTANKS  |               |           |            |      |       |
| ET-126 THRU |               |           |            |      |       |
| 129         |               |           |            |      |       |
|             |               |           |            |      |       |
| ASSEMBLED   |               |           |            |      |       |
| PANELS      |               |           |            |      |       |
| ET-130 THRU |               |           |            |      |       |
| 132         |               |           |            |      |       |
|             |               |           |            |      |       |
| LOOSE PARTS |               |           |            |      |       |
| ET-133 & UP |               |           |            |      |       |
| & STOCK     |               |           |            |      |       |
|             |               |           |            |      |       |
| LOOSE PARTS |               |           |            |      |       |
| ET-133 & UP |               |           |            |      |       |
| & STOCK     |               |           |            |      |       |
| (POST       |               |           |            |      |       |
| 10/18/02 @  |               |           |            |      |       |
| 3:00 AM)    |               |           |            |      |       |
|             |               |           |            |      |       |
| LOOSE PARTS |               |           |            |      |       |
| ET-133 & UP |               |           |            |      |       |
| & STOCK     |               |           |            |      |       |
| (POST       |               |           |            |      |       |
| 10/21/02 @  |               |           |            |      |       |
| NOON)       |               |           |            |      |       |
|             |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-    |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| HAT SECTION |               |           |            |      |       |
| OF AFT      |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| (1 PER)     |               |           |            |      |       |
|             |               |           |            |      |       |
| HAT         |               |           |            |      |       |
| SECTIONS OF |               |           |            |      |       |
| FWD & AFT   |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| (2 PER)     |               |           |            |      |       |
|             |               |           |            |      |       |
| HAT         |               |           |            |      |       |
| SECTIONS OF |               |           |            |      |       |
| FWD & AFT   |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| (2 PER)     |               |           |            |      |       |
|             |               |           |            |      |       |
| FWD & AFT - |               |           |            |      |       |
| 5 READING   |               |           |            |      |       |
| PER END     |               |           |            |      |       |
|             |               |           |            |      |       |
| FWD & AFT - |               |           |            |      |       |
| 2 READING   |               |           |            |      |       |
| PER END AT  |               |           |            |      |       |
| LOCATIONS:  |               |           |            |      |       |
| B, C, I &   |               |           |            |      |       |
| H,          |               |           |            |      |       |
| ATTACHMENT  |               |           |            |      |       |
| 1           |               |           |            |      |       |
|             |               |           |            |      |       |
| FWD & AFT - |               |           |            |      |       |
| 1 READING   |               |           |            |      |       |
| PER END AT  |               |           |            |      |       |
| LOCATIONS:  |               |           |            |      |       |
| B, & I,     |               |           |            |      |       |
| ATTACHMENT  |               |           |            |      |       |
| 1           |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| W.          |               |           |            |      |       |
| MA          |               |           |            |      |       |
| TTHEESSEN - |               |           |            |      |       |
| 3741 / D.   |               |           |            |      |       |
| WESTPHAL -  |               |           |            |      |       |
| 3740        |               |           |            |      |       |
|             |               |           |            |      |       |
| C. CULVER - |               |           |            |      |       |
| 3743 / D.   |               |           |            |      |       |
| WESTPHAL -  |               |           |            |      |       |
| 3740        |               |           |            |      |       |
|             |               |           |            |      |       |
| J.          |               |           |            |      |       |
| SPRAY/3724, |               |           |            |      |       |
| R.          |               |           |            |      |       |
| HI          |               |           |            |      |       |
| NSON/3725 - |               |           |            |      |       |
| D. OWENS -  |               |           |            |      |       |
| 3720        |               |           |            |      |       |
|             |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/30/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| \*          |               |           |            |      |       |
| COMPLETE:   |               |           |            |      |       |
| 10/31/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| \* CLOSURE  |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| SEE         |               |           |            |      |       |
| ATTACHMENT  |               |           |            |      |       |
| #3 FOR ET,  |               |           |            |      |       |
| NCDS, &     |               |           |            |      |       |
| DISCREPANT  |               |           |            |      |       |
| PARTS. THIS |               |           |            |      |       |
| DATA        |               |           |            |      |       |
|             |               |           |            |      |       |
| IS COMPILED |               |           |            |      |       |
| IN THE      |               |           |            |      |       |
| FOLLOWING   |               |           |            |      |       |
| EXCEL       |               |           |            |      |       |
| S           |               |           |            |      |       |
| PREADSHEETS |               |           |            |      |       |
| AND ARE     |               |           |            |      |       |
| LOCATED     |               |           |            |      |       |
|             |               |           |            |      |       |
| IN          |               |           |            |      |       |
| RELIABILITY |               |           |            |      |       |
| ASSURANCE   |               |           |            |      |       |
| CAPS FILES: |               |           |            |      |       |
|             |               |           |            |      |       |
| PARTS       |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| DATA IN     |               |           |            |      |       |
| PROGRESS-A  |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETED   |               |           |            |      |       |
| IT STRINGER |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| DATA        |               |           |            |      |       |
|             |               |           |            |      |       |
| AERO COUNT  |               |           |            |      |       |
| WGM         |               |           |            |      |       |
|             |               |           |            |      |       |
| C. PROVIDE  |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| PROPERTIES  |               |           |            |      |       |
| OF LOT      |               |           |            |      |       |
| ACCEPTANCE  |               |           |            |      |       |
| TESTING,    |               |           |            |      |       |
|             |               |           |            |      |       |
| IDENTIFYING |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| FROM EACH   |               |           |            |      |       |
| LOT. NOTE:  |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| MAINTAINS   |               |           |            |      |       |
|             |               |           |            |      |       |
| T           |               |           |            |      |       |
| RACEABILITY |               |           |            |      |       |
| RECORDS.    |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/15/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETED:  |               |           |            |      |       |
| 10/14/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| DATA WAS    |               |           |            |      |       |
| RECEIVED    |               |           |            |      |       |
| FROM        |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| AND HAS     |               |           |            |      |       |
| BEEN        |               |           |            |      |       |
| SUBMITTED   |               |           |            |      |       |
| TO          |               |           |            |      |       |
|             |               |           |            |      |       |
| TECHNICAL   |               |           |            |      |       |
| OPERATIONS  |               |           |            |      |       |
| FOR USE IN  |               |           |            |      |       |
| ANALYSIS OF |               |           |            |      |       |
| INTERTANK   |               |           |            |      |       |
|             |               |           |            |      |       |
| STRESS      |               |           |            |      |       |
| CASES.      |               |           |            |      |       |
|             |               |           |            |      |       |
| D. PROVIDE  |               |           |            |      |       |
| AEROCHEM\'S |               |           |            |      |       |
| RECEIVING   |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| DO          |               |           |            |      |       |
| CUMENTATION |               |           |            |      |       |
| OF          |               |           |            |      |       |
|             |               |           |            |      |       |
| INCOMING    |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| (I.E. FROM  |               |           |            |      |       |
| DYNAMIC     |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| FORMING).   |               |           |            |      |       |
|             |               |           |            |      |       |
| HOW MANY    |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| ALONG THE   |               |           |            |      |       |
| LENGTH OF   |               |           |            |      |       |
| THE         |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| ARE         |               |           |            |      |       |
|             |               |           |            |      |       |
| CHECKED? IS |               |           |            |      |       |
| THERE ANY   |               |           |            |      |       |
| DO          |               |           |            |      |       |
| CUMENTATION |               |           |            |      |       |
| REGARDING   |               |           |            |      |       |
| DIMENSIONAL |               |           |            |      |       |
|             |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| OF THE      |               |           |            |      |       |
| RADII?      |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/24/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| DATE:       |               |           |            |      |       |
| 10/23/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| THIS IS THE |               |           |            |      |       |
| PROCESS IN  |               |           |            |      |       |
| WHICH       |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| MEASURES    |               |           |            |      |       |
| AND RECORDS |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| UPON        |               |           |            |      |       |
| RECEIPT     |               |           |            |      |       |
| FROM DMF    |               |           |            |      |       |
| (DYNAMIC    |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| FORMING).   |               |           |            |      |       |
|             |               |           |            |      |       |
| 1\) USING A |               |           |            |      |       |
| ZERO TO     |               |           |            |      |       |
| 1.0\" BALL  |               |           |            |      |       |
| MICROMETER, |               |           |            |      |       |
| ESTABLISH A |               |           |            |      |       |
|             |               |           |            |      |       |
| WITNESS/    |               |           |            |      |       |
| CALIBRATION |               |           |            |      |       |
| POINT       |               |           |            |      |       |
| READING IN  |               |           |            |      |       |
| WHICH TO    |               |           |            |      |       |
| CALIBRATE   |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| ULTRASONIC  |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| TESTER      |               |           |            |      |       |
| (NOVA 810   |               |           |            |      |       |
| OR          |               |           |            |      |       |
| KRAUTKRAMER |               |           |            |      |       |
| BRANSON     |               |           |            |      |       |
|             |               |           |            |      |       |
| CL3DL).     |               |           |            |      |       |
| USING THE   |               |           |            |      |       |
| ULTRASONIC  |               |           |            |      |       |
| DEVICE,     |               |           |            |      |       |
| CHECK ALL   |               |           |            |      |       |
| OF THE FLAT |               |           |            |      |       |
|             |               |           |            |      |       |
| AREAS (BOTH |               |           |            |      |       |
| FLANGES,    |               |           |            |      |       |
| THE SIDE    |               |           |            |      |       |
| WALLS AND   |               |           |            |      |       |
| THE TOP HAT |               |           |            |      |       |
| SECTION).   |               |           |            |      |       |
|             |               |           |            |      |       |
| THEN REPEAT |               |           |            |      |       |
| THAT CHECK  |               |           |            |      |       |
| 7 OR 8      |               |           |            |      |       |
| PLACES      |               |           |            |      |       |
| ALONG THAT  |               |           |            |      |       |
| STRINGER.   |               |           |            |      |       |
|             |               |           |            |      |       |
| 2\) THE     |               |           |            |      |       |
| RADII WILL  |               |           |            |      |       |
| THEN BE     |               |           |            |      |       |
| CHECKED     |               |           |            |      |       |
| USING A     |               |           |            |      |       |
| BALL        |               |           |            |      |       |
| MICROMETER  |               |           |            |      |       |
| AT BOTH     |               |           |            |      |       |
|             |               |           |            |      |       |
| ENDS OF THE |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| (ALL FOUR   |               |           |            |      |       |
| RADII).     |               |           |            |      |       |
|             |               |           |            |      |       |
| 3\) THE     |               |           |            |      |       |
| ACTUAL      |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| IS THEN     |               |           |            |      |       |
| RECORDED IN |               |           |            |      |       |
| THE WORK    |               |           |            |      |       |
|             |               |           |            |      |       |
| ORD         |               |           |            |      |       |
| ER/TRAVELER |               |           |            |      |       |
| IN TWO      |               |           |            |      |       |
| PLACES, ONE |               |           |            |      |       |
| FOR THE     |               |           |            |      |       |
| RANGE       |               |           |            |      |       |
| (MINIMUM    |               |           |            |      |       |
| AND         |               |           |            |      |       |
|             |               |           |            |      |       |
| MAXIMUM     |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| FOUND) FOR  |               |           |            |      |       |
| THE FLAT    |               |           |            |      |       |
| AREAS AND   |               |           |            |      |       |
| THE OTHER   |               |           |            |      |       |
| WOULD       |               |           |            |      |       |
|             |               |           |            |      |       |
| BE THE      |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| FOUND       |               |           |            |      |       |
| DURING THE  |               |           |            |      |       |
| RADII       |               |           |            |      |       |
| CHECK.      |               |           |            |      |       |
|             |               |           |            |      |       |
| 4\) PARTS   |               |           |            |      |       |
| WOULD BE    |               |           |            |      |       |
| SUBJECT TO  |               |           |            |      |       |
| REJECTION   |               |           |            |      |       |
| IF THE      |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| VALUES FELL |               |           |            |      |       |
|             |               |           |            |      |       |
| WITHIN      |               |           |            |      |       |
| 0.001\" OF  |               |           |            |      |       |
| THE ACTUAL  |               |           |            |      |       |
| DRAWING     |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| (THIS IS    |               |           |            |      |       |
| BECAUSE     |               |           |            |      |       |
|             |               |           |            |      |       |
| OF          |               |           |            |      |       |
| SUBSEQUENT  |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| REMOVAL     |               |           |            |      |       |
| DURING      |               |           |            |      |       |
| OTHER       |               |           |            |      |       |
| O           |               |           |            |      |       |
| PERATIONS). |               |           |            |      |       |
|             |               |           |            |      |       |
| REF.: EMAIL |               |           |            |      |       |
| M. HEINSZ   |               |           |            |      |       |
| DATED       |               |           |            |      |       |
| 10/23/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| E. MAP      |               |           |            |      |       |
| O           |               |           |            |      |       |
| UT/IDENTIFY |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
| STRESS      |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| FOR         |               |           |            |      |       |
| DISCREPANT  |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGERS.  |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| D.          |               |           |            |      |       |
| W           |               |           |            |      |       |
| HITCHURCH - |               |           |            |      |       |
| 4440 / E.   |               |           |            |      |       |
| SWEET -4400 |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/23/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE:   |               |           |            |      |       |
| 10/23/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| THE         |               |           |            |      |       |
| FOLLOWING   |               |           |            |      |       |
| AREAS ARE   |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
| STRESS      |               |           |            |      |       |
| LOCATIONS:  |               |           |            |      |       |
|             |               |           |            |      |       |
| PANEL \#    |               |           |            |      |       |
| STRINGER \# |               |           |            |      |       |
|             |               |           |            |      |       |
| 1 S-08,     |               |           |            |      |       |
| S-09, S-10, |               |           |            |      |       |
| S-11        |               |           |            |      |       |
|             |               |           |            |      |       |
| 2 S-01      |               |           |            |      |       |
|             |               |           |            |      |       |
| 3 S-18      |               |           |            |      |       |
|             |               |           |            |      |       |
| 6 S-18      |               |           |            |      |       |
|             |               |           |            |      |       |
| 7 S-01      |               |           |            |      |       |
|             |               |           |            |      |       |
| REF.:       |               |           |            |      |       |
| C           |               |           |            |      |       |
| ONVERSATION |               |           |            |      |       |
| WITH C.     |               |           |            |      |       |
| MCCONNELL & |               |           |            |      |       |
| J. PILET    |               |           |            |      |       |
| 10/23/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| F. PROVIDE  |               |           |            |      |       |
| STATEMENTS  |               |           |            |      |       |
| FROM        |               |           |            |      |       |
| LEARJET     |               |           |            |      |       |
| STATING     |               |           |            |      |       |
| THAT THEY   |               |           |            |      |       |
| CHECKED ALL |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| PRIOR TO    |               |           |            |      |       |
| I           |               |           |            |      |       |
| NSTALLATION |               |           |            |      |       |
| AS          |               |           |            |      |       |
| PREVIOUSLY  |               |           |            |      |       |
| IDENTIFIED  |               |           |            |      |       |
| IN          |               |           |            |      |       |
|             |               |           |            |      |       |
| TELECONS.   |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH 3760 |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/17/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CANCELED    |               |           |            |      |       |
| 10/15/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-        |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| DID NOT     |               |           |            |      |       |
| CHANGE      |               |           |            |      |       |
| THEIR       |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| PROCESS.    |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
|             |               |           |            |      |       |
| PROCESS     |               |           |            |      |       |
| UTILIZED    |               |           |            |      |       |
| FOR         |               |           |            |      |       |
| LOCKHEED    |               |           |            |      |       |
| MARTIN IS   |               |           |            |      |       |
| THE SAME AS |               |           |            |      |       |
| LEARJET.    |               |           |            |      |       |
|             |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| INSPECTED   |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| WHEN THEY   |               |           |            |      |       |
|             |               |           |            |      |       |
| RECEIVED    |               |           |            |      |       |
| FORMED      |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| FROM DMF.   |               |           |            |      |       |
| SU          |               |           |            |      |       |
| BSEQUENTLY, |               |           |            |      |       |
| THEY        |               |           |            |      |       |
| PROCESS     |               |           |            |      |       |
|             |               |           |            |      |       |
| THE PARTS   |               |           |            |      |       |
| AND THE     |               |           |            |      |       |
| CHEM.       |               |           |            |      |       |
| MILLING     |               |           |            |      |       |
| OPERATION   |               |           |            |      |       |
| CAN REDUCE  |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| BELOW       |               |           |            |      |       |
| MINIMUM.    |               |           |            |      |       |
| LEARJET DID |               |           |            |      |       |
| NOT PERFORM |               |           |            |      |       |
| 100%        |               |           |            |      |       |
|             |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| AT AEROCHEM |               |           |            |      |       |
| AS          |               |           |            |      |       |
| PREVIOUSLY  |               |           |            |      |       |
| UNDERSTOOD. |               |           |            |      |       |
| LEARJET     |               |           |            |      |       |
| ONLY        |               |           |            |      |       |
|             |               |           |            |      |       |
| PERFORMED   |               |           |            |      |       |
| SAMPLE      |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| AT AEROCHEM |               |           |            |      |       |
| & UPON      |               |           |            |      |       |
| RECEIPT AT  |               |           |            |      |       |
|             |               |           |            |      |       |
| LEARJET.    |               |           |            |      |       |
| REF. EMAIL  |               |           |            |      |       |
| FROM S.     |               |           |            |      |       |
| PARIKH      |               |           |            |      |       |
| DATED       |               |           |            |      |       |
| 10/14/02.   |               |           |            |      |       |
|             |               |           |            |      |       |
| G. INSPECT  |               |           |            |      |       |
| THREE       |               |           |            |      |       |
| 8091        |               |           |            |      |       |
| 3000413-412 |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| (NON-CHEM   |               |           |            |      |       |
| MILLED). AT |               |           |            |      |       |
|             |               |           |            |      |       |
| FOUR        |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| ON THE      |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| (FWD, AFT,  |               |           |            |      |       |
| MIDDLE X    |               |           |            |      |       |
| 2), OVER A  |               |           |            |      |       |
|             |               |           |            |      |       |
| SIX-INCH    |               |           |            |      |       |
| AREA,       |               |           |            |      |       |
| TAKING      |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| READINGS TO |               |           |            |      |       |
| A 1\" GRID. |               |           |            |      |       |
| IN          |               |           |            |      |       |
|             |               |           |            |      |       |
| ADDITION,   |               |           |            |      |       |
| TAKE A      |               |           |            |      |       |
| SCRAP       |               |           |            |      |       |
| PRIMED      |               |           |            |      |       |
| SECTION OF  |               |           |            |      |       |
| STRINGER,   |               |           |            |      |       |
| USING A     |               |           |            |      |       |
|             |               |           |            |      |       |
| SIMILAR     |               |           |            |      |       |
| GRID TO     |               |           |            |      |       |
| DETERMINE   |               |           |            |      |       |
| THICKNESS,  |               |           |            |      |       |
| THEN STRIP  |               |           |            |      |       |
| THE PART TO |               |           |            |      |       |
|             |               |           |            |      |       |
| CORRELATE   |               |           |            |      |       |
| ACTUAL      |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| WITH        |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| METAL       |               |           |            |      |       |
|             |               |           |            |      |       |
| THICKNESS.  |               |           |            |      |       |
|             |               |           |            |      |       |
| DETERMINE   |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| VARIATION.  |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760        |               |           |            |      |       |
|             |               |           |            |      |       |
| D. OWENS -  |               |           |            |      |       |
| 3720        |               |           |            |      |       |
|             |               |           |            |      |       |
| J.          |               |           |            |      |       |
| DESFORGES - |               |           |            |      |       |
| 4410 / E.   |               |           |            |      |       |
| SWEET -     |               |           |            |      |       |
| 4400        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/22/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE:   |               |           |            |      |       |
| 10/22/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-        |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| A 7-INCH    |               |           |            |      |       |
| LONG        |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| REMNANT WAS |               |           |            |      |       |
| OBTAINED    |               |           |            |      |       |
| AND         |               |           |            |      |       |
| MEASURED    |               |           |            |      |       |
| WITH        |               |           |            |      |       |
|             |               |           |            |      |       |
| AND WITHOUT |               |           |            |      |       |
| PRIMER      |               |           |            |      |       |
| (PRIMER PER |               |           |            |      |       |
| STP3003     |               |           |            |      |       |
| TYPE 1).    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
|             |               |           |            |      |       |
| M           |               |           |            |      |       |
| EASUREMENTS |               |           |            |      |       |
| WERE TAKEN  |               |           |            |      |       |
| ON THE TWO  |               |           |            |      |       |
| FLANGES,    |               |           |            |      |       |
| TWO LEGS,   |               |           |            |      |       |
| AND ON      |               |           |            |      |       |
|             |               |           |            |      |       |
| TOP OF THE  |               |           |            |      |       |
| STRINGER AT |               |           |            |      |       |
| 6 LOCATIONS |               |           |            |      |       |
| SPACED      |               |           |            |      |       |
| AP          |               |           |            |      |       |
| PROXIMATELY |               |           |            |      |       |
| 1 INCH      |               |           |            |      |       |
|             |               |           |            |      |       |
| APART DOWN  |               |           |            |      |       |
| THE LENGTH  |               |           |            |      |       |
| OF THE      |               |           |            |      |       |
| STRINGER.   |               |           |            |      |       |
| M           |               |           |            |      |       |
| EASUREMENTS |               |           |            |      |       |
| WERE FIRST  |               |           |            |      |       |
|             |               |           |            |      |       |
| TAKEN USING |               |           |            |      |       |
| A           |               |           |            |      |       |
| MICROMETER  |               |           |            |      |       |
| THEN        |               |           |            |      |       |
| REPEATED    |               |           |            |      |       |
| USING       |               |           |            |      |       |
| ULTRASONIC  |               |           |            |      |       |
|             |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
| TO OBTAIN   |               |           |            |      |       |
| THE OVERALL |               |           |            |      |       |
| THICKNESS,  |               |           |            |      |       |
| WHICH       |               |           |            |      |       |
| INCLUDES    |               |           |            |      |       |
| BOTH        |               |           |            |      |       |
|             |               |           |            |      |       |
| METAL AND   |               |           |            |      |       |
| ISL/OSL     |               |           |            |      |       |
| PRIMER.     |               |           |            |      |       |
| PRIMER      |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| ON BOTH     |               |           |            |      |       |
|             |               |           |            |      |       |
| SIDES OF    |               |           |            |      |       |
| THE PART    |               |           |            |      |       |
| WAS THEN    |               |           |            |      |       |
| MEASURED    |               |           |            |      |       |
| WITH AN     |               |           |            |      |       |
| ISOSCOPE.   |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| PRIMER      |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| M           |               |           |            |      |       |
| EASUREMENTS |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| SUBTRACTED  |               |           |            |      |       |
| FROM THE    |               |           |            |      |       |
| OVERALL     |               |           |            |      |       |
|             |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| TO OBTAIN A |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| THICKNESS.  |               |           |            |      |       |
|             |               |           |            |      |       |
| AFTER ALL   |               |           |            |      |       |
| OVERALL     |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| M           |               |           |            |      |       |
| EASUREMENTS |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| OBTAINED,   |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| PRIMER WAS  |               |           |            |      |       |
| REMOVED     |               |           |            |      |       |
| FROM THE    |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| (CHEMICAL   |               |           |            |      |       |
| STRIPPER    |               |           |            |      |       |
| PER         |               |           |            |      |       |
|             |               |           |            |      |       |
| STP3007).   |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| M           |               |           |            |      |       |
| EASUREMENTS |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| REPEATED ON |               |           |            |      |       |
| THE BARE    |               |           |            |      |       |
|             |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| STRINGER.   |               |           |            |      |       |
|             |               |           |            |      |       |
| A           |               |           |            |      |       |
| COMPARISON  |               |           |            |      |       |
| OF THE BARE |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| READINGS TO |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| THICKNESSES |               |           |            |      |       |
| WAS THEN    |               |           |            |      |       |
| PERFORMED.  |               |           |            |      |       |
| IT WAS      |               |           |            |      |       |
| FOUND       |               |           |            |      |       |
|             |               |           |            |      |       |
| THAT THE    |               |           |            |      |       |
| BARE METAL  |               |           |            |      |       |
| THICKNESSES |               |           |            |      |       |
| RANGED      |               |           |            |      |       |
| BETWEEN     |               |           |            |      |       |
| 0.0005 INCH |               |           |            |      |       |
| LESS        |               |           |            |      |       |
|             |               |           |            |      |       |
| THAN TO     |               |           |            |      |       |
| 0.0008 INCH |               |           |            |      |       |
| GREATER     |               |           |            |      |       |
| THAN THE    |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| METAL       |               |           |            |      |       |
|             |               |           |            |      |       |
| T           |               |           |            |      |       |
| HICKNESSES. |               |           |            |      |       |
| THE AVERAGE |               |           |            |      |       |
| OF THE BARE |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| DIFFERENCES |               |           |            |      |       |
| (DELTA)     |               |           |            |      |       |
|             |               |           |            |      |       |
| WAS +0.0003 |               |           |            |      |       |
| INCH.       |               |           |            |      |       |
|             |               |           |            |      |       |
| THREE       |               |           |            |      |       |
| 8091        |               |           |            |      |       |
| 3000413-412 |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| WITH PRIMER |               |           |            |      |       |
| WERE ALSO   |               |           |            |      |       |
| INSPECTED   |               |           |            |      |       |
|             |               |           |            |      |       |
| FOR OVERALL |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| AND PRIMER  |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| AS          |               |           |            |      |       |
| DESCRIBED   |               |           |            |      |       |
| IN          |               |           |            |      |       |
|             |               |           |            |      |       |
| PREVIOUSLY. |               |           |            |      |       |
| THE GROUP   |               |           |            |      |       |
| OF          |               |           |            |      |       |
| M           |               |           |            |      |       |
| EASUREMENTS |               |           |            |      |       |
| WERE TAKEN  |               |           |            |      |       |
| IN FOUR     |               |           |            |      |       |
|             |               |           |            |      |       |
| PLACES PER  |               |           |            |      |       |
| STRINGER:   |               |           |            |      |       |
| AFT END, 7  |               |           |            |      |       |
| FEET FROM   |               |           |            |      |       |
| AFT, 14     |               |           |            |      |       |
| FEET FROM   |               |           |            |      |       |
|             |               |           |            |      |       |
| AFT, AND    |               |           |            |      |       |
| FWD END.    |               |           |            |      |       |
|             |               |           |            |      |       |
| USING THE   |               |           |            |      |       |
| ME          |               |           |            |      |       |
| ASUREMENTS, |               |           |            |      |       |
| AN AVERAGE  |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
|             |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| OBTAINED    |               |           |            |      |       |
| FOR EACH OF |               |           |            |      |       |
| THE FOUR    |               |           |            |      |       |
| MEASUREMENT |               |           |            |      |       |
| GROUPS. THE |               |           |            |      |       |
|             |               |           |            |      |       |
| +0.0003     |               |           |            |      |       |
| INCH BARE   |               |           |            |      |       |
| METAL DELTA |               |           |            |      |       |
| WAS THEN    |               |           |            |      |       |
| APPLIED TO  |               |           |            |      |       |
| THESE       |               |           |            |      |       |
| AVERAGE     |               |           |            |      |       |
|             |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| THICKNESSES |               |           |            |      |       |
| TO OBTAIN   |               |           |            |      |       |
| AN ADJUSTED |               |           |            |      |       |
| BARE METAL  |               |           |            |      |       |
|             |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| FOR EACH OF |               |           |            |      |       |
| THE FOUR    |               |           |            |      |       |
| MEASUREMENT |               |           |            |      |       |
| GROUPS ON   |               |           |            |      |       |
| EACH OF     |               |           |            |      |       |
|             |               |           |            |      |       |
| THE THREE   |               |           |            |      |       |
| STRINGERS.  |               |           |            |      |       |
|             |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| RESULTS OF  |               |           |            |      |       |
| THE THREE   |               |           |            |      |       |
| STRINGERS:  |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGER #1 |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-\-  |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE AFT |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0574 VS   |               |           |            |      |       |
| AVERAGE AFT |               |           |            |      |       |
| ADJUSTED    |               |           |            |      |       |
| THK         |               |           |            |      |       |
|             |               |           |            |      |       |
| = 0.0577    |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE 7   |               |           |            |      |       |
| FT          |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0588 VS   |               |           |            |      |       |
| AVERAGE 7   |               |           |            |      |       |
| FT ADJUSTED |               |           |            |      |       |
|             |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0591      |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE 14  |               |           |            |      |       |
| FT          |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0580 VS   |               |           |            |      |       |
| AVERAGE 14  |               |           |            |      |       |
| FT ADJUSTED |               |           |            |      |       |
|             |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0583      |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE FWD |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0574 VS   |               |           |            |      |       |
| AVERAGE FWD |               |           |            |      |       |
| ADJUSTED    |               |           |            |      |       |
| THK         |               |           |            |      |       |
|             |               |           |            |      |       |
| = 0.0577    |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGER #2 |               |           |            |      |       |
|             |               |           |            |      |       |
| \           |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE AFT |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0582 VS   |               |           |            |      |       |
| AVERAGE AFT |               |           |            |      |       |
| ADJUSTED    |               |           |            |      |       |
| THK         |               |           |            |      |       |
|             |               |           |            |      |       |
| = 0.0585    |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE 7   |               |           |            |      |       |
| FT          |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0583 VS   |               |           |            |      |       |
| AVERAGE 7   |               |           |            |      |       |
| FT ADJUSTED |               |           |            |      |       |
|             |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0586      |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE 14  |               |           |            |      |       |
| FT          |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0587 VS   |               |           |            |      |       |
| AVERAGE 14  |               |           |            |      |       |
| FT ADJUSTED |               |           |            |      |       |
|             |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0590      |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE FWD |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0582 VS   |               |           |            |      |       |
| AVERAGE FWD |               |           |            |      |       |
| ADJUSTED    |               |           |            |      |       |
| THK         |               |           |            |      |       |
|             |               |           |            |      |       |
| = 0.0585    |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGER #3 |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-\-  |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE AFT |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0580 VS   |               |           |            |      |       |
| AVERAGE AFT |               |           |            |      |       |
| ADJUSTED    |               |           |            |      |       |
| THK         |               |           |            |      |       |
|             |               |           |            |      |       |
| = 0.0583    |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE 7   |               |           |            |      |       |
| FT          |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0585 VS   |               |           |            |      |       |
| AVERAGE 7   |               |           |            |      |       |
| FT ADJUSTED |               |           |            |      |       |
|             |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0588      |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE 14  |               |           |            |      |       |
| FT          |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0589 VS   |               |           |            |      |       |
| AVERAGE 14  |               |           |            |      |       |
| FT ADJUSTED |               |           |            |      |       |
|             |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0592      |               |           |            |      |       |
|             |               |           |            |      |       |
| AVERAGE FWD |               |           |            |      |       |
| CALCULATED  |               |           |            |      |       |
| THK =       |               |           |            |      |       |
| 0.0583 VS   |               |           |            |      |       |
| AVERAGE FWD |               |           |            |      |       |
| ADJUSTED    |               |           |            |      |       |
| THK         |               |           |            |      |       |
|             |               |           |            |      |       |
| = 0.0586    |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGER #1 |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| MEASURED IN |               |           |            |      |       |
| 120         |               |           |            |      |       |
| LOCATIONS,  |               |           |            |      |       |
| 112 OF      |               |           |            |      |       |
| THESE WERE  |               |           |            |      |       |
|             |               |           |            |      |       |
| UNDER       |               |           |            |      |       |
| 0.0590      |               |           |            |      |       |
| (DRAWING    |               |           |            |      |       |
| MINIMUM).   |               |           |            |      |       |
| AFTER THE   |               |           |            |      |       |
| +0.0003     |               |           |            |      |       |
| ADJUSTMENT  |               |           |            |      |       |
|             |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| APPLIED, 18 |               |           |            |      |       |
| OF THE 112  |               |           |            |      |       |
| DEFECT      |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| GREATER     |               |           |            |      |       |
| THAN        |               |           |            |      |       |
|             |               |           |            |      |       |
| 0.0590      |               |           |            |      |       |
| INCH.       |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGER #2 |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| MEASURED IN |               |           |            |      |       |
| 115         |               |           |            |      |       |
| LOCATIONS,  |               |           |            |      |       |
| 97 OF THESE |               |           |            |      |       |
| WERE        |               |           |            |      |       |
|             |               |           |            |      |       |
| UNDER       |               |           |            |      |       |
| 0.0590 INCH |               |           |            |      |       |
| THICKNESS.  |               |           |            |      |       |
| AFTER THE   |               |           |            |      |       |
| +0.0003     |               |           |            |      |       |
| ADJUSTMENT  |               |           |            |      |       |
| WAS         |               |           |            |      |       |
|             |               |           |            |      |       |
| APPLIED, 21 |               |           |            |      |       |
| OF THE 97   |               |           |            |      |       |
| DEFECT      |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| GREATER     |               |           |            |      |       |
| THAN 0.0590 |               |           |            |      |       |
|             |               |           |            |      |       |
| INCH.       |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGER #3 |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| MEASURED IN |               |           |            |      |       |
| 115         |               |           |            |      |       |
| LOCATIONS,  |               |           |            |      |       |
| 94 OF THESE |               |           |            |      |       |
| WERE        |               |           |            |      |       |
|             |               |           |            |      |       |
| UNDER       |               |           |            |      |       |
| 0.0590 INCH |               |           |            |      |       |
| THICKNESS.  |               |           |            |      |       |
| AFTER THE   |               |           |            |      |       |
| +0.0003     |               |           |            |      |       |
| ADJUSTMENT  |               |           |            |      |       |
| WAS         |               |           |            |      |       |
|             |               |           |            |      |       |
| APPLIED, 26 |               |           |            |      |       |
| OF THE 94   |               |           |            |      |       |
| DEFECT      |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| GREATER     |               |           |            |      |       |
| THAN 0.0590 |               |           |            |      |       |
|             |               |           |            |      |       |
| INCH.       |               |           |            |      |       |
|             |               |           |            |      |       |
| AD          |               |           |            |      |       |
| DITIONALLY, |               |           |            |      |       |
| THE         |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| M           |               |           |            |      |       |
| EASUREMENTS |               |           |            |      |       |
| FROM EACH   |               |           |            |      |       |
| OF THE      |               |           |            |      |       |
| THREE       |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| INDICATE    |               |           |            |      |       |
| THE PARTS   |               |           |            |      |       |
| ARE         |               |           |            |      |       |
| THINNEST BY |               |           |            |      |       |
| 0.0001 TO   |               |           |            |      |       |
| 0.0014      |               |           |            |      |       |
|             |               |           |            |      |       |
| INCH NEAR   |               |           |            |      |       |
| THE FWD AND |               |           |            |      |       |
| AFT ENDS OF |               |           |            |      |       |
| THE PART.   |               |           |            |      |       |
|             |               |           |            |      |       |
| REF.: EMAIL |               |           |            |      |       |
| L DESFORGES |               |           |            |      |       |
| 10/21/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| H. INSPECT  |               |           |            |      |       |
| 8091        |               |           |            |      |       |
| 3000413-424 |               |           |            |      |       |
| & 428       |               |           |            |      |       |
| STRINGERS,  |               |           |            |      |       |
| CHEM        |               |           |            |      |       |
| MILLED,     |               |           |            |      |       |
| 2024 FOR    |               |           |            |      |       |
|             |               |           |            |      |       |
| THINNING.   |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-      |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| PART TYPE   |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-    |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE    |               |           |            |      |       |
| INTERTANKS  |               |           |            |      |       |
| ET-124 &    |               |           |            |      |       |
| 125         |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE    |               |           |            |      |       |
| INTERTANKS  |               |           |            |      |       |
| ET-126 THRU |               |           |            |      |       |
| 129         |               |           |            |      |       |
|             |               |           |            |      |       |
| ASSEMBLED   |               |           |            |      |       |
| PANELS      |               |           |            |      |       |
| ET-130 THRU |               |           |            |      |       |
| 132         |               |           |            |      |       |
|             |               |           |            |      |       |
| LOOSE PARTS |               |           |            |      |       |
| ET-133 & UP |               |           |            |      |       |
| & STOCK     |               |           |            |      |       |
|             |               |           |            |      |       |
| LOOSE PARTS |               |           |            |      |       |
| ET-133 & UP |               |           |            |      |       |
| & STOCK     |               |           |            |      |       |
| (POST       |               |           |            |      |       |
| 10/21/02 @  |               |           |            |      |       |
| NOON)       |               |           |            |      |       |
|             |               |           |            |      |       |
| INSPECTION  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-\-  |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| HAT SECTION |               |           |            |      |       |
| OF AFT      |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| (1 PER)     |               |           |            |      |       |
|             |               |           |            |      |       |
| HAT         |               |           |            |      |       |
| SECTIONS OF |               |           |            |      |       |
| FWD & AFT   |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| (2 PER)     |               |           |            |      |       |
|             |               |           |            |      |       |
| HAT         |               |           |            |      |       |
| SECTIONS OF |               |           |            |      |       |
| FWD & AFT   |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| (2 PER)     |               |           |            |      |       |
|             |               |           |            |      |       |
| FWD & AFT - |               |           |            |      |       |
| 2 READING   |               |           |            |      |       |
| PER END AT  |               |           |            |      |       |
| LOCATIONS:  |               |           |            |      |       |
| B, C, I &   |               |           |            |      |       |
| H,          |               |           |            |      |       |
| ATTACHMENT  |               |           |            |      |       |
| 1           |               |           |            |      |       |
|             |               |           |            |      |       |
| FWD & AFT - |               |           |            |      |       |
| 1 READING   |               |           |            |      |       |
| PER END AT  |               |           |            |      |       |
| LOCATIONS:  |               |           |            |      |       |
| B, & I,     |               |           |            |      |       |
| ATTACHMENT  |               |           |            |      |       |
| 1           |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M.          |               |           |            |      |       |
| HEI         |               |           |            |      |       |
| NSZ-3761/S. |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760 D.     |               |           |            |      |       |
| OWENS -     |               |           |            |      |       |
| 3720        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/30/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| \*          |               |           |            |      |       |
| COMPLETE:   |               |           |            |      |       |
| 10/31/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| \* CLOSURE  |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| THIS DATA   |               |           |            |      |       |
| IS COMPILED |               |           |            |      |       |
| IN THE      |               |           |            |      |       |
| FOLLOWING   |               |           |            |      |       |
| EXCEL       |               |           |            |      |       |
| S           |               |           |            |      |       |
| PREADSHEETS |               |           |            |      |       |
| AND ARE     |               |           |            |      |       |
|             |               |           |            |      |       |
| LOCATED IN  |               |           |            |      |       |
| RELIABILITY |               |           |            |      |       |
| ASSURANCE   |               |           |            |      |       |
| CAPS FILES: |               |           |            |      |       |
|             |               |           |            |      |       |
| PARTS       |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| DATA 2024   |               |           |            |      |       |
|             |               |           |            |      |       |
| AERO COUNT  |               |           |            |      |       |
| WGM         |               |           |            |      |       |
|             |               |           |            |      |       |
| I. ISSUE    |               |           |            |      |       |
| SCAR TO     |               |           |            |      |       |
| ADDRESS     |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| VIOLATIONS. |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| J.          |               |           |            |      |       |
| MAXWELL -   |               |           |            |      |       |
| 3741 /D.    |               |           |            |      |       |
| WESTPHAL -  |               |           |            |      |       |
| 3740        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/14/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE:   |               |           |            |      |       |
| 10/14/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| SCAR        |               |           |            |      |       |
| 2002-071    |               |           |            |      |       |
| HAS BEEN    |               |           |            |      |       |
| ISSUED WITH |               |           |            |      |       |
| AN 11-14-02 |               |           |            |      |       |
| RESPONSE    |               |           |            |      |       |
| DATE.       |               |           |            |      |       |
|             |               |           |            |      |       |
| REF.; EMAIL |               |           |            |      |       |
| J. MAXWELL  |               |           |            |      |       |
| 10/23/02.   |               |           |            |      |       |
|             |               |           |            |      |       |
| J. DEVELOP  |               |           |            |      |       |
| AND         |               |           |            |      |       |
| IMPLEMENT   |               |           |            |      |       |
| AN ACTION   |               |           |            |      |       |
| PLAN TO     |               |           |            |      |       |
| UNDERSTAND  |               |           |            |      |       |
| AND         |               |           |            |      |       |
| DOCUMENT    |               |           |            |      |       |
|             |               |           |            |      |       |
| RESULTS OF  |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| PROCESSING  |               |           |            |      |       |
| (NON-CHEM.  |               |           |            |      |       |
| MILLED &    |               |           |            |      |       |
| CHEM.       |               |           |            |      |       |
|             |               |           |            |      |       |
| MILLED) PER |               |           |            |      |       |
| APPROVED    |               |           |            |      |       |
| PLANNING TO |               |           |            |      |       |
| DETERMINE   |               |           |            |      |       |
| EFFECTS OF  |               |           |            |      |       |
|             |               |           |            |      |       |
| PROCESSING  |               |           |            |      |       |
| ON FINAL    |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| THICKNESS.  |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 2/14/03     |               |           |            |      |       |
|             |               |           |            |      |       |
| K. AEROCHEM |               |           |            |      |       |
| TO PROCESS  |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| USING       |               |           |            |      |       |
| STRINGENT   |               |           |            |      |       |
| PROCESS     |               |           |            |      |       |
| CONTROL     |               |           |            |      |       |
|             |               |           |            |      |       |
| TO ACHIEVE  |               |           |            |      |       |
| MINIMUM     |               |           |            |      |       |
| MATERIAL    |               |           |            |      |       |
| REMOVAL AND |               |           |            |      |       |
| TO ASSESS   |               |           |            |      |       |
| CAPABILITY  |               |           |            |      |       |
|             |               |           |            |      |       |
| AND         |               |           |            |      |       |
| FEASIBILITY |               |           |            |      |       |
| OF THE      |               |           |            |      |       |
| PROCESS.    |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 2/14/03     |               |           |            |      |       |
|             |               |           |            |      |       |
| L. DEVELOP  |               |           |            |      |       |
| FLEET       |               |           |            |      |       |
| CLEARANCE   |               |           |            |      |       |
| RATIONALE   |               |           |            |      |       |
| FOR ET\'S   |               |           |            |      |       |
| 116 AND UP. |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| J. PILET -  |               |           |            |      |       |
| 4130 / F.   |               |           |            |      |       |
| MANTO -     |               |           |            |      |       |
| 4100        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 10/31/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE:   |               |           |            |      |       |
| 10/29/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| ET-116 & UP |               |           |            |      |       |
| HAS BEEN    |               |           |            |      |       |
| GENERATED.  |               |           |            |      |       |
| STRESS      |               |           |            |      |       |
| ANALYSIS    |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| PERFORMED   |               |           |            |      |       |
| USING       |               |           |            |      |       |
|             |               |           |            |      |       |
| LOWER BOUND |               |           |            |      |       |
| AND         |               |           |            |      |       |
| ST          |               |           |            |      |       |
| ATISTICALLY |               |           |            |      |       |
| DERIVED (3  |               |           |            |      |       |
| SIGMA LOW)  |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| VALUES      |               |           |            |      |       |
|             |               |           |            |      |       |
| FOR FORMED  |               |           |            |      |       |
| AL 2090     |               |           |            |      |       |
| (0.053 IN   |               |           |            |      |       |
| LOWER BOUND |               |           |            |      |       |
| VS. 0.059   |               |           |            |      |       |
| IN DRAWING  |               |           |            |      |       |
| MIN.        |               |           |            |      |       |
|             |               |           |            |      |       |
| R           |               |           |            |      |       |
| EQUIREMENT) |               |           |            |      |       |
| AND FORMED  |               |           |            |      |       |
| AL 2024     |               |           |            |      |       |
| (0.065 IN   |               |           |            |      |       |
| LOWER BOUND |               |           |            |      |       |
| VS. 0.067   |               |           |            |      |       |
| IN          |               |           |            |      |       |
|             |               |           |            |      |       |
| DRAWING     |               |           |            |      |       |
| MIN.        |               |           |            |      |       |
| R           |               |           |            |      |       |
| EQUIREMENT) |               |           |            |      |       |
| INTERTANK   |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| POTENTIALLY |               |           |            |      |       |
| INSTALLED   |               |           |            |      |       |
| ON          |               |           |            |      |       |
|             |               |           |            |      |       |
| ET-116 AND  |               |           |            |      |       |
| UP. THE     |               |           |            |      |       |
| ANALYSIS,   |               |           |            |      |       |
| WHICH WAS   |               |           |            |      |       |
| CON         |               |           |            |      |       |
| SERVATIVELY |               |           |            |      |       |
| CORRELATED  |               |           |            |      |       |
| TO          |               |           |            |      |       |
|             |               |           |            |      |       |
| STRUCTURAL  |               |           |            |      |       |
| TEST        |               |           |            |      |       |
| RESULTS,    |               |           |            |      |       |
| SHOWS       |               |           |            |      |       |
| ADEQUATE    |               |           |            |      |       |
| ULTIMATE    |               |           |            |      |       |
| MARGINS OF  |               |           |            |      |       |
| SAFETY      |               |           |            |      |       |
|             |               |           |            |      |       |
| ABOVE THE   |               |           |            |      |       |
| APPLICABLE  |               |           |            |      |       |
| SAFETY      |               |           |            |      |       |
| FACTOR      |               |           |            |      |       |
| R           |               |           |            |      |       |
| EQUIREMENTS |               |           |            |      |       |
| (SF REQ\'D  |               |           |            |      |       |
| = 1.29 AND  |               |           |            |      |       |
|             |               |           |            |      |       |
| 1.40) FOR   |               |           |            |      |       |
| THE         |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| USING THE   |               |           |            |      |       |
| LOWER BOUND |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
|             |               |           |            |      |       |
| VALUES.     |               |           |            |      |       |
| USING THE   |               |           |            |      |       |
| MORE        |               |           |            |      |       |
| REALISTIC   |               |           |            |      |       |
| ST          |               |           |            |      |       |
| ATISTICALLY |               |           |            |      |       |
| DERIVED     |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| OF          |               |           |            |      |       |
|             |               |           |            |      |       |
| 0.0566 (3   |               |           |            |      |       |
| SIGMA LOW)  |               |           |            |      |       |
| FOR THE AL  |               |           |            |      |       |
| 2090        |               |           |            |      |       |
| STRINGERS,  |               |           |            |      |       |
| THE         |               |           |            |      |       |
| ANALYSIS    |               |           |            |      |       |
| SHOWS A     |               |           |            |      |       |
|             |               |           |            |      |       |
| MINIMUM FS  |               |           |            |      |       |
| = 1.48 VS.  |               |           |            |      |       |
| THE         |               |           |            |      |       |
| REQUIRED    |               |           |            |      |       |
| 1.40 FOR    |               |           |            |      |       |
| THE         |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
| LOCATION.   |               |           |            |      |       |
| AL          |               |           |            |      |       |
|             |               |           |            |      |       |
| 2024        |               |           |            |      |       |
| MARGINS AND |               |           |            |      |       |
| FS ARE      |               |           |            |      |       |
| GREATER     |               |           |            |      |       |
| THAN THOSE  |               |           |            |      |       |
| FOR AL      |               |           |            |      |       |
| 2090. THE   |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
|             |               |           |            |      |       |
| FAILURE     |               |           |            |      |       |
| MODE FOR    |               |           |            |      |       |
| THE         |               |           |            |      |       |
| AFFECTED    |               |           |            |      |       |
| PARTS IS    |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
| COLUMN      |               |           |            |      |       |
| BUCKLING.   |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
| HARDWARE    |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| ARE LOCATED |               |           |            |      |       |
| IN THE AFT  |               |           |            |      |       |
| END OF      |               |           |            |      |       |
| PANEL 1 AT  |               |           |            |      |       |
|             |               |           |            |      |       |
| THE +Z AXIS |               |           |            |      |       |
| AND AT THE  |               |           |            |      |       |
| FORWARD     |               |           |            |      |       |
| ENDS OF     |               |           |            |      |       |
| PANELS 2/3  |               |           |            |      |       |
| AND 6/7     |               |           |            |      |       |
| ADJACENT TO |               |           |            |      |       |
|             |               |           |            |      |       |
| THE THRUST  |               |           |            |      |       |
| PANELS. REF |               |           |            |      |       |
| EMAILS FROM |               |           |            |      |       |
| J. PILET    |               |           |            |      |       |
| DATED       |               |           |            |      |       |
| 10/28/2002  |               |           |            |      |       |
| &           |               |           |            |      |       |
|             |               |           |            |      |       |
| 10/29/2002  |               |           |            |      |       |
| AND NCD     |               |           |            |      |       |
| N062513,    |               |           |            |      |       |
| ITEM 3,     |               |           |            |      |       |
| ATTACHMENT  |               |           |            |      |       |
| 3-1.        |               |           |            |      |       |
|             |               |           |            |      |       |
| \*M.        |               |           |            |      |       |
| INVESTIGATE |               |           |            |      |       |
| PROCESS     |               |           |            |      |       |
| FLOW AND    |               |           |            |      |       |
| OTHER       |               |           |            |      |       |
| CON         |               |           |            |      |       |
| SIDERATIONS |               |           |            |      |       |
| FOR         |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
|             |               |           |            |      |       |
| ON ET-93 &  |               |           |            |      |       |
| 94, TO SEE  |               |           |            |      |       |
| IF THERE IS |               |           |            |      |       |
| ANY CONCERN |               |           |            |      |       |
| FOR         |               |           |            |      |       |
| HARDWARE    |               |           |            |      |       |
|             |               |           |            |      |       |
| ACC         |               |           |            |      |       |
| EPTABILITY. |               |           |            |      |       |
| ALL         |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| ON THESE    |               |           |            |      |       |
| ETS WERE    |               |           |            |      |       |
| M           |               |           |            |      |       |
| ANUFACTURED |               |           |            |      |       |
| FROM 2024   |               |           |            |      |       |
|             |               |           |            |      |       |
| MATERIAL.   |               |           |            |      |       |
|             |               |           |            |      |       |
| RESP        |               |           |            |      |       |
| ONSIBILITY: |               |           |            |      |       |
| M. HEINSZ - |               |           |            |      |       |
| 3761 / S.   |               |           |            |      |       |
| PARIKH -    |               |           |            |      |       |
| 3760        |               |           |            |      |       |
|             |               |           |            |      |       |
| ECD:        |               |           |            |      |       |
| 11/8/02     |               |           |            |      |       |
|             |               |           |            |      |       |
| COMPLETE:   |               |           |            |      |       |
| 11/07/02    |               |           |            |      |       |
|             |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| STATEMENT:  |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| A REVIEW OF |               |           |            |      |       |
| TELEDYNE    |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| FORMING &   |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| SHOWS THAT  |               |           |            |      |       |
| THE         |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
|             |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| PROCESSED   |               |           |            |      |       |
| DIFFERENTLY |               |           |            |      |       |
| FROM THE    |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| INSTALLED   |               |           |            |      |       |
| ON SLWT. IN |               |           |            |      |       |
|             |               |           |            |      |       |
| ADDITION,   |               |           |            |      |       |
| THE         |               |           |            |      |       |
| \"STOCK\"   |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| INSPECTED   |               |           |            |      |       |
| BOTH PRIOR  |               |           |            |      |       |
| TO          |               |           |            |      |       |
|             |               |           |            |      |       |
| F           |               |           |            |      |       |
| ABRICATION, |               |           |            |      |       |
| UPON        |               |           |            |      |       |
| RECEIPT AT  |               |           |            |      |       |
| THE CHEM.   |               |           |            |      |       |
| MILL HOUSE, |               |           |            |      |       |
| AND UPON    |               |           |            |      |       |
| COMPLETION  |               |           |            |      |       |
|             |               |           |            |      |       |
| OF          |               |           |            |      |       |
| F           |               |           |            |      |       |
| ABRICATION. |               |           |            |      |       |
| THEREFORE,  |               |           |            |      |       |
| ET-93 & 94  |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| ARE NOT AT  |               |           |            |      |       |
| RISK AND    |               |           |            |      |       |
|             |               |           |            |      |       |
| ARE         |               |           |            |      |       |
| ACCEPTABLE. |               |           |            |      |       |
| REF. EMAIL  |               |           |            |      |       |
| DATED       |               |           |            |      |       |
| 11/07/2002  |               |           |            |      |       |
| &           |               |           |            |      |       |
| DISCUSSIONS |               |           |            |      |       |
| BY          |               |           |            |      |       |
|             |               |           |            |      |       |
| RELIABILITY |               |           |            |      |       |
| ASSURANCE   |               |           |            |      |       |
| WITH J.     |               |           |            |      |       |
| MAJOR.      |               |           |            |      |       |
|             |               |           |            |      |       |
| CAUSE       |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\--   |               |           |            |      |       |
|             |               |           |            |      |       |
| PENDING     |               |           |            |      |       |
| IN          |               |           |            |      |       |
| VESTIGATION |               |           |            |      |       |
| RESULTS     |               |           |            |      |       |
|             |               |           |            |      |       |
| TASK II.    |               |           |            |      |       |
| CORRECTIVE  |               |           |            |      |       |
| ACTION      |               |           |            |      |       |
|             |               |           |            |      |       |
| \-          |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| PENDING     |               |           |            |      |       |
| COMPLETION  |               |           |            |      |       |
| OF          |               |           |            |      |       |
| IN          |               |           |            |      |       |
| VESTIGATION |               |           |            |      |       |
|             |               |           |            |      |       |
| TASK III.   |               |           |            |      |       |
| CLEARANCE   |               |           |            |      |       |
| OF          |               |           |            |      |       |
| EF          |               |           |            |      |       |
| FECTIVITIES |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-\   |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| ET-93 & 94  |               |           |            |      |       |
|             |               |           |            |      |       |
| A REVIEW OF |               |           |            |      |       |
| TELEDYNE    |               |           |            |      |       |
| METAL       |               |           |            |      |       |
| FORMING &   |               |           |            |      |       |
| AEROCHEM    |               |           |            |      |       |
| SHOWS       |               |           |            |      |       |
|             |               |           |            |      |       |
| THAT THE    |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| WERE        |               |           |            |      |       |
| PROCESSED   |               |           |            |      |       |
| DIFFERENTLY |               |           |            |      |       |
| FROM THE    |               |           |            |      |       |
|             |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| INSTALLED   |               |           |            |      |       |
| ON SLWT. IN |               |           |            |      |       |
| ADDITION,   |               |           |            |      |       |
| THE         |               |           |            |      |       |
| \"STOCK\"   |               |           |            |      |       |
|             |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| INSPECTED   |               |           |            |      |       |
| BOTH PRIOR  |               |           |            |      |       |
| TO          |               |           |            |      |       |
| F           |               |           |            |      |       |
| ABRICATION, |               |           |            |      |       |
| UPON        |               |           |            |      |       |
|             |               |           |            |      |       |
| RECEIPT AT  |               |           |            |      |       |
| THE CHEM.   |               |           |            |      |       |
| MILL HOUSE, |               |           |            |      |       |
| AND UPON    |               |           |            |      |       |
| COMPLETION  |               |           |            |      |       |
| OF          |               |           |            |      |       |
|             |               |           |            |      |       |
| F           |               |           |            |      |       |
| ABRICATION. |               |           |            |      |       |
| THEREFORE,  |               |           |            |      |       |
| ET-93 & 94  |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| ARE NOT     |               |           |            |      |       |
|             |               |           |            |      |       |
| AT RISK AND |               |           |            |      |       |
| ARE         |               |           |            |      |       |
| ACCEPTABLE. |               |           |            |      |       |
|             |               |           |            |      |       |
| ET- 116 &   |               |           |            |      |       |
| UP          |               |           |            |      |       |
|             |               |           |            |      |       |
| STRESS      |               |           |            |      |       |
| ANALYSIS    |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| PERFORMED   |               |           |            |      |       |
| USING LOWER |               |           |            |      |       |
| BOUND AND   |               |           |            |      |       |
|             |               |           |            |      |       |
| ST          |               |           |            |      |       |
| ATISTICALLY |               |           |            |      |       |
| DERIVED (3  |               |           |            |      |       |
| SIGMA LOW)  |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| VALUES      |               |           |            |      |       |
|             |               |           |            |      |       |
| FOR FORMED  |               |           |            |      |       |
| AL 2090     |               |           |            |      |       |
| (0.053 IN   |               |           |            |      |       |
| LOWER BOUND |               |           |            |      |       |
| VS. 0.059   |               |           |            |      |       |
| IN          |               |           |            |      |       |
|             |               |           |            |      |       |
| DRAWING     |               |           |            |      |       |
| MIN.        |               |           |            |      |       |
| R           |               |           |            |      |       |
| EQUIREMENT) |               |           |            |      |       |
| AND FORMED  |               |           |            |      |       |
| AL 2024     |               |           |            |      |       |
|             |               |           |            |      |       |
| (0.065 IN   |               |           |            |      |       |
| LOWER BOUND |               |           |            |      |       |
| VS. 0.067   |               |           |            |      |       |
| IN DRAWING  |               |           |            |      |       |
| MIN.        |               |           |            |      |       |
|             |               |           |            |      |       |
| R           |               |           |            |      |       |
| EQUIREMENT) |               |           |            |      |       |
| INTERTANK   |               |           |            |      |       |
| STRINGERS   |               |           |            |      |       |
| POTENTIALLY |               |           |            |      |       |
|             |               |           |            |      |       |
| INSTALLED   |               |           |            |      |       |
| ON ET-116   |               |           |            |      |       |
| AND UP. THE |               |           |            |      |       |
| ANALYSIS,   |               |           |            |      |       |
| WHICH       |               |           |            |      |       |
|             |               |           |            |      |       |
| WAS         |               |           |            |      |       |
| CON         |               |           |            |      |       |
| SERVATIVELY |               |           |            |      |       |
| CORRELATED  |               |           |            |      |       |
| TO          |               |           |            |      |       |
| STRUCTURAL  |               |           |            |      |       |
| TEST        |               |           |            |      |       |
|             |               |           |            |      |       |
| RESULTS,    |               |           |            |      |       |
| SHOWS       |               |           |            |      |       |
| ADEQUATE    |               |           |            |      |       |
| ULTIMATE    |               |           |            |      |       |
| MARGINS OF  |               |           |            |      |       |
| SAFETY      |               |           |            |      |       |
|             |               |           |            |      |       |
| ABOVE THE   |               |           |            |      |       |
| APPLICABLE  |               |           |            |      |       |
| SAFETY      |               |           |            |      |       |
| FACTOR      |               |           |            |      |       |
| R           |               |           |            |      |       |
| EQUIREMENTS |               |           |            |      |       |
| (SF         |               |           |            |      |       |
|             |               |           |            |      |       |
| REQ\'D =    |               |           |            |      |       |
| 1.29 AND    |               |           |            |      |       |
| 1.40) FOR   |               |           |            |      |       |
| THE         |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
|             |               |           |            |      |       |
| USING THE   |               |           |            |      |       |
| LOWER BOUND |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| VALUES.     |               |           |            |      |       |
| USING THE   |               |           |            |      |       |
|             |               |           |            |      |       |
| MORE        |               |           |            |      |       |
| REALISTIC   |               |           |            |      |       |
| ST          |               |           |            |      |       |
| ATISTICALLY |               |           |            |      |       |
| DERIVED     |               |           |            |      |       |
| THICKNESS   |               |           |            |      |       |
| OF          |               |           |            |      |       |
|             |               |           |            |      |       |
| 0.0566 (3   |               |           |            |      |       |
| SIGMA LOW)  |               |           |            |      |       |
| FOR THE AL  |               |           |            |      |       |
| 2090        |               |           |            |      |       |
| STRINGERS,  |               |           |            |      |       |
| THE         |               |           |            |      |       |
|             |               |           |            |      |       |
| ANALYSIS    |               |           |            |      |       |
| SHOWS A     |               |           |            |      |       |
| MINIMUM FS  |               |           |            |      |       |
| = 1.48 VS.  |               |           |            |      |       |
| THE         |               |           |            |      |       |
| REQUIRED    |               |           |            |      |       |
|             |               |           |            |      |       |
| 1.40 FOR    |               |           |            |      |       |
| THE         |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
| LOCATION.   |               |           |            |      |       |
| AL 2024     |               |           |            |      |       |
| MARGINS AND |               |           |            |      |       |
|             |               |           |            |      |       |
| FS ARE      |               |           |            |      |       |
| GREATER     |               |           |            |      |       |
| THAN THOSE  |               |           |            |      |       |
| FOR AL      |               |           |            |      |       |
| 2090. THE   |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
|             |               |           |            |      |       |
| FAILURE     |               |           |            |      |       |
| MODE FOR    |               |           |            |      |       |
| THE         |               |           |            |      |       |
| AFFECTED    |               |           |            |      |       |
| PARTS IS    |               |           |            |      |       |
| STRINGER    |               |           |            |      |       |
|             |               |           |            |      |       |
| COLUMN      |               |           |            |      |       |
| BUCKLING.   |               |           |            |      |       |
| THE         |               |           |            |      |       |
| CRITICAL    |               |           |            |      |       |
| HARDWARE    |               |           |            |      |       |
| LOCATIONS   |               |           |            |      |       |
| ARE         |               |           |            |      |       |
|             |               |           |            |      |       |
| LOCATED IN  |               |           |            |      |       |
| THE AFT END |               |           |            |      |       |
| OF PANEL 1  |               |           |            |      |       |
| AT THE +Z   |               |           |            |      |       |
| AXIS AND    |               |           |            |      |       |
|             |               |           |            |      |       |
| AT THE      |               |           |            |      |       |
| FORWARD     |               |           |            |      |       |
| ENDS OF     |               |           |            |      |       |
| PANELS 2/3  |               |           |            |      |       |
| AND 6/7     |               |           |            |      |       |
| ADJACENT TO |               |           |            |      |       |
|             |               |           |            |      |       |
| THE THRUST  |               |           |            |      |       |
| PANELS.     |               |           |            |      |       |
|             |               |           |            |      |       |
| TASK IV.    |               |           |            |      |       |
| CAPS        |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| SUMMARY     |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-    |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| PENDING     |               |           |            |      |       |
| COMPLETION  |               |           |            |      |       |
| OF          |               |           |            |      |       |
| IN          |               |           |            |      |       |
| VESTIGATION |               |           |            |      |       |
|             |               |           |            |      |       |
| ATTACHMENT  |               |           |            |      |       |
| #1          |               |           |            |      |       |
|             |               |           |            |      |       |
| DISCREPANT  |               |           |            |      |       |
| PART & DASH |               |           |            |      |       |
| #S          |               |           |            |      |       |
|             |               |           |            |      |       |
| CHEM-MILLED |               |           |            |      |       |
| 2090P/N     |               |           |            |      |       |
| 80913000413 |               |           |            |      |       |
| (43):       |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| -401, -403, |               |           |            |      |       |
| -406, -413, |               |           |            |      |       |
| -414, -418, |               |           |            |      |       |
| -422, -423, |               |           |            |      |       |
|             |               |           |            |      |       |
| -424, -425, |               |           |            |      |       |
| -426, -427, |               |           |            |      |       |
| -428, -431, |               |           |            |      |       |
| -434, -435, |               |           |            |      |       |
|             |               |           |            |      |       |
| -436, -437, |               |           |            |      |       |
| -438, -441, |               |           |            |      |       |
| -442, -443, |               |           |            |      |       |
| -444, -445, |               |           |            |      |       |
|             |               |           |            |      |       |
| -446, -448, |               |           |            |      |       |
| -452, -454, |               |           |            |      |       |
| -456, -457, |               |           |            |      |       |
| -458, -462, |               |           |            |      |       |
|             |               |           |            |      |       |
| -463, -465, |               |           |            |      |       |
| -466, -467, |               |           |            |      |       |
| -468, -471, |               |           |            |      |       |
| -472, -473, |               |           |            |      |       |
|             |               |           |            |      |       |
| -474, -475, |               |           |            |      |       |
| -476        |               |           |            |      |       |
|             |               |           |            |      |       |
| NON-        |               |           |            |      |       |
| CHEM-MILLED |               |           |            |      |       |
| 2090        |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\-      |               |           |            |      |       |
| \-\-\-\-\-\ |               |           |            |      |       |
| -\-\-\-\-\- |               |           |            |      |       |
| \-\-\-\-\-- |               |           |            |      |       |
|             |               |           |            |      |       |
| P/N         |               |           |            |      |       |
| 80913000413 |               |           |            |      |       |
| (9)         |               |           |            |      |       |
|             |               |           |            |      |       |
| -412, -415, |               |           |            |      |       |
| -417, -432, |               |           |            |      |       |
| -451, -453, |               |           |            |      |       |
| -455, -461, |               |           |            |      |       |
|             |               |           |            |      |       |
| -464        |               |           |            |      |       |
|             |               |           |            |      |       |
| 2024        |               |           |            |      |       |
|             |               |           |            |      |       |
| \-\-\--     |               |           |            |      |       |
|             |               |           |            |      |       |
| P/N         |               |           |            |      |       |
| 80913000413 |               |           |            |      |       |
| (2)         |               |           |            |      |       |
|             |               |           |            |      |       |
| -424 & -428 |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+
| **MSFC      |               |           |            |      |       |
| Response/Co |               |           |            |      |       |
| ncurrence** |               |           |            |      |       |
|             |               |           |            |      |       |
| 1           |               |           |            |      |       |
| 1/04/2002 - |               |           |            |      |       |
| BOARD       |               |           |            |      |       |
| ACCEPTED    |               |           |            |      |       |
| INTERIM     |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| UNTIL       |               |           |            |      |       |
| 12/02/02    |               |           |            |      |       |
| PER         |               |           |            |      |       |
|             |               |           |            |      |       |
| RATIONALE   |               |           |            |      |       |
| E: THERE IS |               |           |            |      |       |
| NO OVERALL  |               |           |            |      |       |
| SAFETY OF   |               |           |            |      |       |
| FLIGHT      |               |           |            |      |       |
| CONCERN.    |               |           |            |      |       |
|             |               |           |            |      |       |
| 1           |               |           |            |      |       |
| 1/04/2002 - |               |           |            |      |       |
| ACTION      |               |           |            |      |       |
| GIVEN TO    |               |           |            |      |       |
| LOCK        |               |           |            |      |       |
| HEED-MARTIN |               |           |            |      |       |
| TO UPGRADE  |               |           |            |      |       |
| THIS ISSUE  |               |           |            |      |       |
| TO A        |               |           |            |      |       |
|             |               |           |            |      |       |
| CRITICALITY |               |           |            |      |       |
| 1           |               |           |            |      |       |
| CONDITION.  |               |           |            |      |       |
|             |               |           |            |      |       |
| 1           |               |           |            |      |       |
| 2/03/2002 - |               |           |            |      |       |
| BOARD       |               |           |            |      |       |
| ACCEPTED    |               |           |            |      |       |
| INTERIM     |               |           |            |      |       |
| CLOSURE     |               |           |            |      |       |
| UNTIL       |               |           |            |      |       |
| 1/30/2003   |               |           |            |      |       |
| PER         |               |           |            |      |       |
|             |               |           |            |      |       |
| RATIONALE   |               |           |            |      |       |
| E: THERE IS |               |           |            |      |       |
| NO OVERALL  |               |           |            |      |       |
| SAFETY OF   |               |           |            |      |       |
| FLIGHT      |               |           |            |      |       |
| CONCERN.    |               |           |            |      |       |
+-------------+---------------+-----------+------------+------+-------+

  -----------------------------------------------------------------------
  MSFC Problem Reporting and Corrective Action (PRACA) System

  ASSESSMENT ADDENDUM REPORT
  -----------------------------------------------------------------------

  ----------------- -------------------- ---------------- ----------- ----------- ------------
  **MSFC Report#**\ **IFA#**\            **Contractor     **JSC#**\   **KSC#**\   **EICN#**\
  A17816            \--                  RPT#**\          \--         \--         \--
                                         S-089                                    

  **Asmnt Part#**\  **Asmnt Part Name**\ **Asmnt                                  
  80913000413-4XX   INTERTANK STRINGER   Serial/Lot#**\                           
                                         N/A                                      

  **HCRIT CD**\     **FCRIT CD**\        **CAUSE CD**\    **FAIL                  
  1                 \--                  \--              MODE**\                 
                                                          MU - MECH               
                                                          TOLRNCE                 

  **Asmnt FMEA**\   **Asmnt FM**\        **FMEA CSE**\    **FMEA                  
  \--               \--                  \--              SCSE**\                 
                                                          \--                     

  **Asmnt FMEA**\   **Asmnt FM**\        **FMEA CSE**\    **FMEA                  
  \--               \--                  \--              SCSE**\                 
                                                          \--                     

  **Asmnt FMEA**\   **Asmnt FM**\        **FMEA CSE**\    **FMEA                  
  \--               \--                  \--              SCSE**\                 
                                                          \--                     

  **Correlated      **Correlated         **Correlated                             
  Part#**\          Part#**\             Part#**\                                 
  \--               \--                  \--                                      

  **Associated      **Associated LRU#**\ **Associated                             
  LRU#**\           \--                  LRU#**\                                  
  \--                                    \--                                      

  **MAJOR DESIGN                                                                  
  CHANGES**                                                                       

  **APRV DATE**\    **DESCRIPTION OF                                              
  \--               CHANGES**\                                                    
                    \--                                                           

  **ASSESSMENT                                                                    
  TEXT**                                                                          
  ----------------- -------------------- ---------------- ----------- ----------- ------------