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

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

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

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

+--------------+---------------+-----------+---------+------+--------+
| **MSFC       | **In-Flight   | **C       | **      | *    |        |
| Record \#**\ | Anomaly       | ontractor | JSC#**\ | *KSC |        |
| A16486       | Number**\     | Report    | \--     | #**\ |        |
|              | \--           | Number**\ |         | \--  |        |
|              |               | P-077     |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Problem    |               |           |         |      |        |
| Title**\     |               |           |         |      |        |
| LH2 SIPHON   |               |           |         |      |        |
| COVER JOINT  |               |           |         |      |        |
| LEAK         |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **EICN#**\   | **ELEMENT**\  | **Cont    | **F     | **   |        |
| \--          | ET            | ractor**\ | SCM#**\ | FCRI |        |
|              |               | MMMSS     | \--     | T**\ |        |
|              |               |           |         | 1    |        |
+--------------+---------------+-----------+---------+------+--------+
| **HCRIT**\   | **Sys_Lvl**\  | **Misc    |         |      |        |
| \--          | \--           | Codes**\  |         |      |        |
|              |               | A B C D E |         |      |        |
|              |               | F G H I J |         |      |        |
|              |               | K L M N O |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| *            | **NO          | *         | **SER/  | *    |        |
| *HARDWARE**\ | MENCLATURE**\ | *PART#**\ | LOT#**\ | *MAN |        |
| EIM          | ET COMPLETE   | 809010    | ET-80   | UFAC |        |
|              |               | 06000-059 |         | TURE |        |
|              |               |           |         | R**\ |        |
|              |               |           |         | L    |        |
|              |               |           |         | MMSS |        |
+--------------+---------------+-----------+---------+------+--------+
| *            | **NO          | *         | **SER/  | *    |        |
| *HARDWARE**\ | MENCLATURE**\ | *PART#**\ | LOT#**\ | *MAN |        |
| LRU          | \--           | \--       | \--     | UFAC |        |
|              |               |           |         | TURE |        |
|              |               |           |         | R**\ |        |
|              |               |           |         | \--  |        |
+--------------+---------------+-----------+---------+------+--------+
| *            | **NO          | *         | **SER/  | *    |        |
| *HARDWARE**\ | MENCLATURE**\ | *PART#**\ | LOT#**\ | *MAN |        |
| NCA          | NAFLEX SEAL   | 55L11-7T  | 835     | UFAC |        |
|              |               |           | 4900855 | TURE |        |
|              |               |           |         | R**\ |        |
|              |               |           |         | LAN  |        |
|              |               |           |         | GLEY |        |
+--------------+---------------+-----------+---------+------+--------+
| **Test/      | **Prevailing  | **F /     | **Fail  | **   |        |
| Operation**\ | Condtion**\   | U**\      | Mode**\ | Caus |        |
| LF - FDF     | F -           | F         | MV -    | e**\ |        |
|              | FUNCTIONAL    |           | EXT     | M    |        |
|              |               |           | LEAK    | AT - |        |
|              |               |           |         | MFG- |        |
|              |               |           |         | ASY- |        |
|              |               |           |         | EQUP |        |
+--------------+---------------+-----------+---------+------+--------+
| **System**\  | **Defect**\   | **Ma      | **Work  | **   |        |
| PROPULSION   | DA - ROUGH    | terial**\ | Con     | Fail |        |
|              |               | P - SEAL  | tact**\ | Dat  |        |
|              |               |           | DAVE    | e**\ |        |
|              |               |           | O\`NEAL | 05   |        |
|              |               |           |         | /05/ |        |
|              |               |           |         | 1995 |        |
+--------------+---------------+-----------+---------+------+--------+
| **Received   | **Date        | **FMEA    | **IFA:  | *    |        |
| at MSFC**\   | Isolated**\   | Ref       | Mission | *Mis |        |
| 05/11/1995   | 05/09/1995    | erence**\ | P       | sion |        |
|              |               | 2.10.6.1  | hase**\ | Ela  |        |
|              |               |           | \--     | psed |        |
|              |               |           |         | Tim  |        |
|              |               |           |         | e**\ |        |
|              |               |           |         | \--  |        |
+--------------+---------------+-----------+---------+------+--------+
| *            |               | **S       |         | **   |        |
| *Location**\ |               | ymptom**\ |         | Time |        |
| AF           |               | MV - EXT  |         | Cycl |        |
|              |               | LEAK      |         | e**\ |        |
|              |               |           |         | \--  |        |
+--------------+---------------+-----------+---------+------+--------+
| *            |               |           |         |      |        |
| *Effectivity |               |           |         |      |        |
| Text**\      |               |           |         |      |        |
| ET-80        |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Vehicle    |               |           |         |      |        |
| Effectivity  |               |           |         |      |        |
| Codes**      |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Vehicle    | **Vehicle     | **Vehicle | **      | *    |        |
| 1**\         | 2**\          | 3**\      | Vehicle | *Veh |        |
| \--          | \--           | \--       | 4**\    | icle |        |
|              |               |           | \--     | 5**\ |        |
|              |               |           |         | \--  |        |
+--------------+---------------+-----------+---------+------+--------+
| **Mission    |               |           |         |      |        |
| Effectivity  |               |           |         |      |        |
| Codes**      |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Mssn 1**\  | **Mssn 2**\   | **Mssn    | **Mssn  | **   |        |
| \--          | \--           | 3**\      | 4**\    | Mssn |        |
|              |               | \--       | \--     | 5**\ |        |
|              |               |           |         | \--  |        |
+--------------+---------------+-----------+---------+------+--------+
| **Estimated  |               |           |         |      |        |
| Completion   |               |           |         |      |        |
| Dates**      |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **MSFC       | **Contractor  | **LVL 3   | *       |      |        |
| Approved     | Req Defer     | Close**\  | *Remark |      |        |
| Defer Until  | Until Date**\ | \--       | /       |      |        |
| Date**\      | \--           |           | Ac      |      |        |
| 11/18/1995   |               |           | tion**\ |      |        |
|              |               |           | \--     |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **I          |               |           |         |      |        |
| nvestigation |               |           |         |      |        |
| / Resolution |               |           |         |      |        |
| Summary**    |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Last MSFC  | **CN RSLV     | **Defer   | **Add   | *    |        |
| Update**\    | SBMT**\       | Date**\   | Date**\ | *R/C |        |
| 02/15/2001   | \--           | \--       | \--     | Code |        |
|              |               |           |         | s**\ |        |
|              |               |           |         | 0 -  |        |
|              |               |           |         | EXPL |        |
|              |               |           |         | \--  |        |
|              |               |           |         | \--  |        |
+--------------+---------------+-----------+---------+------+--------+
| **Assignee** |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Design**\  | **Chief       | **S &     | **Pro   | *    |        |
| M. MOOREY    | Engineer**\   | MA**\     | ject**\ | *Pro |        |
|              | M. PESSIN     | M. SMILES | \--     | ject |        |
|              |               |           |         | MG   |        |
|              |               |           |         | R**\ |        |
|              |               |           |         | P.   |        |
|              |               |           |         | CO   |        |
|              |               |           |         | UNTS |        |
+--------------+---------------+-----------+---------+------+--------+
| **Approval** |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Design**\  | **Chief       | **S &     | **Pro   | *    |        |
| M. MOORE     | Engineer**\   | MA**\     | ject**\ | *Pro |        |
|              | M. PESSIN     | M.D.      | \--     | ject |        |
|              |               | SMITH     |         | MG   |        |
|              |               |           |         | R**\ |        |
|              |               |           |         | P.   |        |
|              |               |           |         | V.   |        |
|              |               |           |         | CO   |        |
|              |               |           |         | UNTS |        |
+--------------+---------------+-----------+---------+------+--------+
| **PAC        | **PAC Review  | **MSFC    | **St    | *    |        |
| Assignee**\  | Complete**\   | Closure   | atus**\ | *F/A |        |
| J. NELSON    | JMN           | Date**\   | C -     | C    |        |
|              |               | 0         | CLOSED  | ompl |        |
|              |               | 7/07/1995 |         | etio |        |
|              |               |           |         | n**\ |        |
|              |               |           |         | 05   |        |
|              |               |           |         | /09/ |        |
|              |               |           |         | 1995 |        |
+--------------+---------------+-----------+---------+------+--------+
| **Problem    | **SEV**\      | **Program | **      | **O  |        |
| Type**\      | \--           | Name**\   | REVL**\ | PRIN |        |
| \--          |               | \--       | \--     | C**\ |        |
|              |               |           |         | \--  |        |
+--------------+---------------+-----------+---------+------+--------+
| **FUNC       | **Software    | *         |         | **SU | **So   |
| MOD**\       | E             | *Software |         | BTYP | ftware |
| \--          | ffectivity**\ | Fail      |         | E**\ | C      |
|              | \-- \-- \--   | CD**\     |         | \--  | losure |
|              | \-- \--       | \--       |         |      | CD**\  |
|              |               |           |         |      | \--    |
+--------------+---------------+-----------+---------+------+--------+
| **RES PERSON | **Approval    |           |         |      |        |
| L2**\        | Signature     |           |         |      |        |
| \--          | L3**\         |           |         |      |        |
|              | \--           |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Related    | **Related     |           |         |      |        |
| Document     | Document      |           |         |      |        |
| Type**\      | ID**\         |           |         |      |        |
| \--          | N005973       |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Related    |               |           |         |      |        |
| Document     |               |           |         |      |        |
| Title**\     |               |           |         |      |        |
| \--          |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Related    | **Related     |           |         |      |        |
| Document     | Document      |           |         |      |        |
| Type**\      | ID**\         |           |         |      |        |
| \--          | \--           |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Related    |               |           |         |      |        |
| Document     |               |           |         |      |        |
| Title**\     |               |           |         |      |        |
| \--          |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Related    | **Related     |           |         |      |        |
| Document     | Document      |           |         |      |        |
| Type**\      | ID**\         |           |         |      |        |
| \--          | \--           |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Related    |               |           |         |      |        |
| Document     |               |           |         |      |        |
| Title**\     |               |           |         |      |        |
| \--          |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Contractor |               |           |         |      |        |
| Status       |               |           |         |      |        |
| Summary**    |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Reliabi    |               |           |         |      |        |
| lity/Quality |               |           |         |      |        |
| Assurance    |               |           |         |      |        |
| Concerns,    |               |           |         |      |        |
| Recomm       |               |           |         |      |        |
| endations:** |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Problem    |               |           |         |      |        |
| D            |               |           |         |      |        |
| escription** |               |           |         |      |        |
|              |               |           |         |      |        |
| THE LH2      |               |           |         |      |        |
| SIPHON COVER |               |           |         |      |        |
| JOINT LEAKED |               |           |         |      |        |
| AT 472 SCCM  |               |           |         |      |        |
| WHICH        |               |           |         |      |        |
| EXCEEDED THE |               |           |         |      |        |
|              |               |           |         |      |        |
| ALLOWABLE    |               |           |         |      |        |
| LEAK RATE OF |               |           |         |      |        |
| 20 SCCM PER  |               |           |         |      |        |
| TP-8C101-FA  |               |           |         |      |        |
|              |               |           |         |      |        |
| CRITICALITY: |               |           |         |      |        |
| THE NAFLEX   |               |           |         |      |        |
| SEAL IS      |               |           |         |      |        |
| CRIT.1 FMEA  |               |           |         |      |        |
| ITEM CODE    |               |           |         |      |        |
| 2.10.6.1;    |               |           |         |      |        |
|              |               |           |         |      |        |
| \"LEAKAGE\"  |               |           |         |      |        |
|              |               |           |         |      |        |
| REV \"B\":   |               |           |         |      |        |
| CLOSES TASKS |               |           |         |      |        |
| I.D., II AND |               |           |         |      |        |
| IV AND       |               |           |         |      |        |
| CLOSES       |               |           |         |      |        |
| CAPS.(SEE    |               |           |         |      |        |
| ASTERISKS)   |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **Contractor |               |           |         |      |        |
| In           |               |           |         |      |        |
| vestigation/ |               |           |         |      |        |
| Resolution** |               |           |         |      |        |
|              |               |           |         |      |        |
| GENERAL:     |               |           |         |      |        |
|              |               |           |         |      |        |
| DURING THE   |               |           |         |      |        |
| DUAL SEAL    |               |           |         |      |        |
| CAVITY LEAK  |               |           |         |      |        |
| CHECK OF THE |               |           |         |      |        |
| LH2 SIPHON   |               |           |         |      |        |
| COVER IN     |               |           |         |      |        |
|              |               |           |         |      |        |
| FINAL        |               |           |         |      |        |
| ASSEMBLY, A  |               |           |         |      |        |
| 472 SCCM     |               |           |         |      |        |
| LEAK WAS     |               |           |         |      |        |
| DETECTED.    |               |           |         |      |        |
| THE          |               |           |         |      |        |
| ALLOWABLE    |               |           |         |      |        |
| LEAKAGE      |               |           |         |      |        |
|              |               |           |         |      |        |
| IS 20 SCCM,  |               |           |         |      |        |
| MAXIMUM, AT  |               |           |         |      |        |
| 6.0+/-0.5    |               |           |         |      |        |
| PSIG GHE AS  |               |           |         |      |        |
| TESTED PER   |               |           |         |      |        |
| TP-8C101-FA  |               |           |         |      |        |
|              |               |           |         |      |        |
| THIS FLANGE  |               |           |         |      |        |
| USES A       |               |           |         |      |        |
| TEFLON       |               |           |         |      |        |
| COATED       |               |           |         |      |        |
| NAFLEX SEAL  |               |           |         |      |        |
| (55L11-7T),  |               |           |         |      |        |
| INSTALLED IN |               |           |         |      |        |
|              |               |           |         |      |        |
| THE VAB CELL |               |           |         |      |        |
| \"A\" WITH   |               |           |         |      |        |
| THE ET IN A  |               |           |         |      |        |
| VERTICAL     |               |           |         |      |        |
| ATTITUDE     |               |           |         |      |        |
|              |               |           |         |      |        |
| TROUBLE      |               |           |         |      |        |
| SHOOTING     |               |           |         |      |        |
| STEPS        |               |           |         |      |        |
| DETECTED NO  |               |           |         |      |        |
| TEST         |               |           |         |      |        |
| EQUIPMENT    |               |           |         |      |        |
| MALFUNCTION. |               |           |         |      |        |
| AN           |               |           |         |      |        |
|              |               |           |         |      |        |
| INSPECTION   |               |           |         |      |        |
| WITH GHE     |               |           |         |      |        |
| MASS SPEC    |               |           |         |      |        |
| DETECTED     |               |           |         |      |        |
| INDICATIONS  |               |           |         |      |        |
| OF SECONDARY |               |           |         |      |        |
| SEAL         |               |           |         |      |        |
|              |               |           |         |      |        |
| LEAKAGE AT   |               |           |         |      |        |
| A            |               |           |         |      |        |
| PPROXIMATELY |               |           |         |      |        |
| THE 2:00 -   |               |           |         |      |        |
| 2:30, 6:00 - |               |           |         |      |        |
| 7:30 AND     |               |           |         |      |        |
| 11:30        |               |           |         |      |        |
|              |               |           |         |      |        |
| POSITIONS,   |               |           |         |      |        |
| HOWEVER,     |               |           |         |      |        |
| THESE        |               |           |         |      |        |
| INDICATIONS  |               |           |         |      |        |
| COULD NOT BE |               |           |         |      |        |
| QUANTIFIED.  |               |           |         |      |        |
| UPON         |               |           |         |      |        |
|              |               |           |         |      |        |
| JOINT        |               |           |         |      |        |
| DISASSEMBLY  |               |           |         |      |        |
| A PIECE OF   |               |           |         |      |        |
| TE           |               |           |         |      |        |
| FLON/PLASTIC |               |           |         |      |        |
| SHAVING WAS  |               |           |         |      |        |
| FOUND ALONG  |               |           |         |      |        |
|              |               |           |         |      |        |
| THE -Z LIP   |               |           |         |      |        |
| OF THE       |               |           |         |      |        |
| COVER. A     |               |           |         |      |        |
| DETAILED     |               |           |         |      |        |
| INSPECTION   |               |           |         |      |        |
| PERFORMED ON |               |           |         |      |        |
| THE SEAL     |               |           |         |      |        |
|              |               |           |         |      |        |
| FOUND AN     |               |           |         |      |        |
| AREA ON THE  |               |           |         |      |        |
| PRIMARY SEAL |               |           |         |      |        |
| LIP, RUNNING |               |           |         |      |        |
| CIRCU        |               |           |         |      |        |
| MFERENTIALLY |               |           |         |      |        |
| FOR          |               |           |         |      |        |
|              |               |           |         |      |        |
| A            |               |           |         |      |        |
| PPROXIMATELY |               |           |         |      |        |
| 0.5 INCHES   |               |           |         |      |        |
| WHERE NO     |               |           |         |      |        |
| EVIDENCE OF  |               |           |         |      |        |
| SEAL TO      |               |           |         |      |        |
| FLANGE       |               |           |         |      |        |
| CONTACT      |               |           |         |      |        |
|              |               |           |         |      |        |
| WAS PRESENT, |               |           |         |      |        |
| I.E. NO      |               |           |         |      |        |
| CONTACT      |               |           |         |      |        |
| WITNESS      |               |           |         |      |        |
| MARK.        |               |           |         |      |        |
| FURTHER      |               |           |         |      |        |
| INSPECTION   |               |           |         |      |        |
| FOUND        |               |           |         |      |        |
|              |               |           |         |      |        |
| A DISHED     |               |           |         |      |        |
| AREA AT      |               |           |         |      |        |
| THESE        |               |           |         |      |        |
| LOCATION     |               |           |         |      |        |
| WITH NO      |               |           |         |      |        |
| DISRUPTION   |               |           |         |      |        |
| OR DAMAGE TO |               |           |         |      |        |
| THE          |               |           |         |      |        |
|              |               |           |         |      |        |
| TEFLON       |               |           |         |      |        |
| COATING      |               |           |         |      |        |
| PRESENT      |               |           |         |      |        |
|              |               |           |         |      |        |
| THIS SEAL    |               |           |         |      |        |
| WAS          |               |           |         |      |        |
| MANUFACTURED |               |           |         |      |        |
| BY LANGLEY   |               |           |         |      |        |
| CORPORATION. |               |           |         |      |        |
| THE SEAL     |               |           |         |      |        |
| SERIAL       |               |           |         |      |        |
|              |               |           |         |      |        |
| NUMBER IS    |               |           |         |      |        |
| 835490085517 |               |           |         |      |        |
|              |               |           |         |      |        |
| TASK I.      |               |           |         |      |        |
| FAILURE      |               |           |         |      |        |
| /PROBLEM     |               |           |         |      |        |
| I            |               |           |         |      |        |
| NVESTIGATION |               |           |         |      |        |
|              |               |           |         |      |        |
| A. INSPECT   |               |           |         |      |        |
| THE SEAL AND |               |           |         |      |        |
| TANK COVER   |               |           |         |      |        |
| FOR          |               |           |         |      |        |
| CONFORMANCE  |               |           |         |      |        |
| TO           |               |           |         |      |        |
| ENGINEERING  |               |           |         |      |        |
|              |               |           |         |      |        |
| REQUIREMENTS |               |           |         |      |        |
|              |               |           |         |      |        |
| RES          |               |           |         |      |        |
| PONSIBILITY: |               |           |         |      |        |
| D.           |               |           |         |      |        |
| O\           |               |           |         |      |        |
| 'NEAL/3741 - |               |           |         |      |        |
| D.           |               |           |         |      |        |
| W            |               |           |         |      |        |
| ESTPHAL/3740 |               |           |         |      |        |
|              |               |           |         |      |        |
| F.           |               |           |         |      |        |
| H            |               |           |         |      |        |
| ARRIS/3726 - |               |           |         |      |        |
| D.           |               |           |         |      |        |
| OWENS/3720   |               |           |         |      |        |
|              |               |           |         |      |        |
| J.           |               |           |         |      |        |
| SPRAY/3725 - |               |           |         |      |        |
| D.           |               |           |         |      |        |
| OWENS/3720   |               |           |         |      |        |
|              |               |           |         |      |        |
| COMPLETE     |               |           |         |      |        |
| 5/17/95      |               |           |         |      |        |
|              |               |           |         |      |        |
| CLOSURE      |               |           |         |      |        |
| STATEMENT    |               |           |         |      |        |
|              |               |           |         |      |        |
| VISUAL AND   |               |           |         |      |        |
| DIMENSIONAL  |               |           |         |      |        |
| INSPECTIONS  |               |           |         |      |        |
| WERE         |               |           |         |      |        |
| PERFORMED ON |               |           |         |      |        |
| THE SEAL     |               |           |         |      |        |
|              |               |           |         |      |        |
| THE VISUAL   |               |           |         |      |        |
| INSPECTION   |               |           |         |      |        |
| FOUND ONE    |               |           |         |      |        |
| AREA ON THE  |               |           |         |      |        |
| PRIMARY SEAL |               |           |         |      |        |
| LIP WITH NO  |               |           |         |      |        |
|              |               |           |         |      |        |
| EVIDENCE OF  |               |           |         |      |        |
| TEFLON       |               |           |         |      |        |
| COMPRESSION  |               |           |         |      |        |
| (WITNESS     |               |           |         |      |        |
| MARK)        |               |           |         |      |        |
| EXTENDING    |               |           |         |      |        |
| FOR          |               |           |         |      |        |
|              |               |           |         |      |        |
| A            |               |           |         |      |        |
| PPROXIMATELY |               |           |         |      |        |
| 0.5 INCH     |               |           |         |      |        |
| CIRCU        |               |           |         |      |        |
| MFERENTIALLY |               |           |         |      |        |
| ALONG THE    |               |           |         |      |        |
| LIP,         |               |           |         |      |        |
| INDICATING   |               |           |         |      |        |
|              |               |           |         |      |        |
| NO SEAL TO   |               |           |         |      |        |
| FLANGE       |               |           |         |      |        |
| CONTACT. A   |               |           |         |      |        |
| SUBTLE LOW   |               |           |         |      |        |
| AREA WAS     |               |           |         |      |        |
| DETECTED BY  |               |           |         |      |        |
| \"FEEL\"     |               |           |         |      |        |
|              |               |           |         |      |        |
| (UNGLOVED    |               |           |         |      |        |
| FINGER) AND  |               |           |         |      |        |
| VISUALLY     |               |           |         |      |        |
| ONCE THE     |               |           |         |      |        |
| AREA WAS     |               |           |         |      |        |
| KNOWN. NO    |               |           |         |      |        |
|              |               |           |         |      |        |
| DISRUPTION   |               |           |         |      |        |
| OR DAMAGE TO |               |           |         |      |        |
| THE TEFLON   |               |           |         |      |        |
| WAS NOTED.   |               |           |         |      |        |
| UPON         |               |           |         |      |        |
| STRIPPING    |               |           |         |      |        |
| THE          |               |           |         |      |        |
|              |               |           |         |      |        |
| COATING FROM |               |           |         |      |        |
| THE DEFECT   |               |           |         |      |        |
| AREA, THE    |               |           |         |      |        |
| SUBSTRATE    |               |           |         |      |        |
| WAS FOUND TO |               |           |         |      |        |
| HAVE A       |               |           |         |      |        |
|              |               |           |         |      |        |
| UNIFORM,     |               |           |         |      |        |
| ETCHED OR    |               |           |         |      |        |
| SANDBLASTED  |               |           |         |      |        |
| APPEARANCE   |               |           |         |      |        |
| WITH NO      |               |           |         |      |        |
| SURFACE      |               |           |         |      |        |
| DISRUPTIONS  |               |           |         |      |        |
|              |               |           |         |      |        |
| THE          |               |           |         |      |        |
| DIMENSIONAL  |               |           |         |      |        |
| INSPECTION   |               |           |         |      |        |
| OF THE       |               |           |         |      |        |
| DEFECT AREA  |               |           |         |      |        |
| WITH THE     |               |           |         |      |        |
| TEFLON       |               |           |         |      |        |
| INTACT       |               |           |         |      |        |
|              |               |           |         |      |        |
| FOUND THE    |               |           |         |      |        |
| TRANSITION   |               |           |         |      |        |
| OF THE       |               |           |         |      |        |
| DEPRESSION   |               |           |         |      |        |
| TO BE        |               |           |         |      |        |
| GRADUAL OVER |               |           |         |      |        |
|              |               |           |         |      |        |
| A            |               |           |         |      |        |
| PPROXIMATELY |               |           |         |      |        |
| A ONE INCH   |               |           |         |      |        |
| AREA WITH    |               |           |         |      |        |
| THE LOW      |               |           |         |      |        |
| POINT 0.004  |               |           |         |      |        |
| INCHES LOWER |               |           |         |      |        |
|              |               |           |         |      |        |
| THAN         |               |           |         |      |        |
| ADJACENT     |               |           |         |      |        |
| AREAS. WITH  |               |           |         |      |        |
| THE TEFLON   |               |           |         |      |        |
| REMOVED, THE |               |           |         |      |        |
| LOW POINT    |               |           |         |      |        |
| MEASURED     |               |           |         |      |        |
|              |               |           |         |      |        |
| 0.005 INCHES |               |           |         |      |        |
| LOWER THAN   |               |           |         |      |        |
| ADJACENT     |               |           |         |      |        |
| AREAS, A     |               |           |         |      |        |
| VIOLATION OF |               |           |         |      |        |
| THE 0.0003   |               |           |         |      |        |
|              |               |           |         |      |        |
| INCH/INCH    |               |           |         |      |        |
| REQUIREMENT  |               |           |         |      |        |
| FOR          |               |           |         |      |        |
| WAVINESS.    |               |           |         |      |        |
| THE PRIMARY  |               |           |         |      |        |
| SEAL HEIGHT  |               |           |         |      |        |
| WAS          |               |           |         |      |        |
|              |               |           |         |      |        |
| 0.0027       |               |           |         |      |        |
| INCHES BELOW |               |           |         |      |        |
| THE MINIMUM  |               |           |         |      |        |
| ALLOWABLE.   |               |           |         |      |        |
| THE          |               |           |         |      |        |
| REQUIREMENT  |               |           |         |      |        |
| PRIOR TO     |               |           |         |      |        |
|              |               |           |         |      |        |
| COATING IS   |               |           |         |      |        |
| 0.006 +      |               |           |         |      |        |
| 0            |               |           |         |      |        |
| .000/-0.002; |               |           |         |      |        |
| THE LOWEST   |               |           |         |      |        |
| SEAL HEIGHT  |               |           |         |      |        |
| WAS MEASURED |               |           |         |      |        |
|              |               |           |         |      |        |
| AT 0.0013    |               |           |         |      |        |
| INCHES. THE  |               |           |         |      |        |
| SEAL         |               |           |         |      |        |
| THICKNESS    |               |           |         |      |        |
| RELATIVE TO  |               |           |         |      |        |
| THE OUTER    |               |           |         |      |        |
| SEAL         |               |           |         |      |        |
|              |               |           |         |      |        |
| DIAMETER AND |               |           |         |      |        |
| SECONDARY    |               |           |         |      |        |
| SEALING      |               |           |         |      |        |
| SURFACE MET  |               |           |         |      |        |
| R            |               |           |         |      |        |
| EQUIREMENTS, |               |           |         |      |        |
| SHOWING NO   |               |           |         |      |        |
|              |               |           |         |      |        |
| NEGATIVE     |               |           |         |      |        |
| TAPER.       |               |           |         |      |        |
| REFERENCE    |               |           |         |      |        |
| NCD N005992  |               |           |         |      |        |
|              |               |           |         |      |        |
| THE TANK     |               |           |         |      |        |
| FLANGE AND   |               |           |         |      |        |
| SIPHON COVER |               |           |         |      |        |
| WERE         |               |           |         |      |        |
| INSPECTED    |               |           |         |      |        |
| WITH NO      |               |           |         |      |        |
| ANOMALIES    |               |           |         |      |        |
|              |               |           |         |      |        |
| FOUND. A     |               |           |         |      |        |
| SUCCESSFUL   |               |           |         |      |        |
| RE           |               |           |         |      |        |
| INSTALLATION |               |           |         |      |        |
| OF THE COVER |               |           |         |      |        |
| WAS          |               |           |         |      |        |
| PERFORMED    |               |           |         |      |        |
| USING        |               |           |         |      |        |
|              |               |           |         |      |        |
| A NEW SEAL,  |               |           |         |      |        |
| THE LEAK     |               |           |         |      |        |
| RATE TESTING |               |           |         |      |        |
| AT 0.1 SCCM  |               |           |         |      |        |
|              |               |           |         |      |        |
| B. REVIEW    |               |           |         |      |        |
| SEAL BUILD   |               |           |         |      |        |
| HISTORY AND  |               |           |         |      |        |
| INSPECTION   |               |           |         |      |        |
| REQUIREMENTS |               |           |         |      |        |
| FOR          |               |           |         |      |        |
|              |               |           |         |      |        |
| ACCEPTANCE   |               |           |         |      |        |
|              |               |           |         |      |        |
| RES          |               |           |         |      |        |
| PONSIBILITY: |               |           |         |      |        |
| D.           |               |           |         |      |        |
| O\           |               |           |         |      |        |
| 'NEAL/3741 - |               |           |         |      |        |
| D.           |               |           |         |      |        |
| W            |               |           |         |      |        |
| ESTPHAL/3740 |               |           |         |      |        |
|              |               |           |         |      |        |
| S.           |               |           |         |      |        |
| THO          |               |           |         |      |        |
| MPSON/3761 - |               |           |         |      |        |
| S.           |               |           |         |      |        |
| PARIKH/3760  |               |           |         |      |        |
|              |               |           |         |      |        |
| COMPLETE     |               |           |         |      |        |
| 5/18/95      |               |           |         |      |        |
|              |               |           |         |      |        |
| CLOSURE      |               |           |         |      |        |
| STATEMENT    |               |           |         |      |        |
|              |               |           |         |      |        |
| A REVIEW OF  |               |           |         |      |        |
| RECEIVING    |               |           |         |      |        |
| INSPECTION   |               |           |         |      |        |
| RECORDS SHOW |               |           |         |      |        |
| THE SEAL WAS |               |           |         |      |        |
| ACCEPTED     |               |           |         |      |        |
|              |               |           |         |      |        |
| AT MAF       |               |           |         |      |        |
| 11/15/93 AS  |               |           |         |      |        |
| AN INITIAL   |               |           |         |      |        |
| RECEIPT.     |               |           |         |      |        |
| ACCEPTANCE   |               |           |         |      |        |
| REQUIREMENTS |               |           |         |      |        |
|              |               |           |         |      |        |
| CONSISTED OF |               |           |         |      |        |
| VERIFYING    |               |           |         |      |        |
| PACKAGING,   |               |           |         |      |        |
| ID           |               |           |         |      |        |
| ENTIFICATION |               |           |         |      |        |
| AND          |               |           |         |      |        |
| MARKINGS,    |               |           |         |      |        |
| AND          |               |           |         |      |        |
|              |               |           |         |      |        |
| VENDOR       |               |           |         |      |        |
| CE           |               |           |         |      |        |
| RTIFICATIONS |               |           |         |      |        |
| AND          |               |           |         |      |        |
| PERFORMING A |               |           |         |      |        |
| VISUAL       |               |           |         |      |        |
| INSPECTION   |               |           |         |      |        |
| ON THE SEAL  |               |           |         |      |        |
|              |               |           |         |      |        |
| THROUGH THE  |               |           |         |      |        |
| PRIMARY      |               |           |         |      |        |
| ACLAR BAG    |               |           |         |      |        |
| AFTER        |               |           |         |      |        |
| REMOVAL FROM |               |           |         |      |        |
| THE OUTER    |               |           |         |      |        |
|              |               |           |         |      |        |
| POLYETHYLENE |               |           |         |      |        |
| BAG. THIS    |               |           |         |      |        |
| INSPECTION   |               |           |         |      |        |
| ASSURES NO   |               |           |         |      |        |
| TEFLON       |               |           |         |      |        |
| DEFECTS      |               |           |         |      |        |
| EXIST ON     |               |           |         |      |        |
|              |               |           |         |      |        |
| THE PRIMARY  |               |           |         |      |        |
| AND          |               |           |         |      |        |
| SECONDARY    |               |           |         |      |        |
| SEALING      |               |           |         |      |        |
| SURFACES AND |               |           |         |      |        |
| THAT THE     |               |           |         |      |        |
| PARTS ARE    |               |           |         |      |        |
|              |               |           |         |      |        |
| FREE FROM    |               |           |         |      |        |
| BURRS AND    |               |           |         |      |        |
| SLIVERS.     |               |           |         |      |        |
| PRIOR TO     |               |           |         |      |        |
| I            |               |           |         |      |        |
| NSTALLATION, |               |           |         |      |        |
| THE SEALS    |               |           |         |      |        |
| ARE          |               |           |         |      |        |
|              |               |           |         |      |        |
| AGAIN        |               |           |         |      |        |
| VISUALLY     |               |           |         |      |        |
| INSPECTED    |               |           |         |      |        |
|              |               |           |         |      |        |
| THE SUPPLIER |               |           |         |      |        |
| REPORTED     |               |           |         |      |        |
| INSPECTIONS  |               |           |         |      |        |
| CONSISTING   |               |           |         |      |        |
| OF           |               |           |         |      |        |
| DIMENSIONAL  |               |           |         |      |        |
|              |               |           |         |      |        |
| INSPECTIONS  |               |           |         |      |        |
| PERFORMED    |               |           |         |      |        |
| AFTER        |               |           |         |      |        |
| MACHIN       |               |           |         |      |        |
| ING/DRILLING |               |           |         |      |        |
| AND          |               |           |         |      |        |
| SANDBLASTING |               |           |         |      |        |
| FOR          |               |           |         |      |        |
|              |               |           |         |      |        |
| TEFLON       |               |           |         |      |        |
| APPLICATION, |               |           |         |      |        |
| INCLUDING    |               |           |         |      |        |
| INSPECTION   |               |           |         |      |        |
| OF THE       |               |           |         |      |        |
| PRIMARY SEAL |               |           |         |      |        |
| HEIGHT ON    |               |           |         |      |        |
|              |               |           |         |      |        |
| AN INCH PER  |               |           |         |      |        |
| INCH BASIS,  |               |           |         |      |        |
| DIMENSIONAL  |               |           |         |      |        |
| INSPECTIONS  |               |           |         |      |        |
| FOR TEFLON   |               |           |         |      |        |
| THICKNESS    |               |           |         |      |        |
|              |               |           |         |      |        |
| DURING AND   |               |           |         |      |        |
| AFTER        |               |           |         |      |        |
| APPLICATION, |               |           |         |      |        |
| AND VISUAL   |               |           |         |      |        |
| INSPECTIONS  |               |           |         |      |        |
| PERFORMED    |               |           |         |      |        |
| AFTER        |               |           |         |      |        |
|              |               |           |         |      |        |
| TEFLON       |               |           |         |      |        |
| APPLICATION, |               |           |         |      |        |
| AFTER        |               |           |         |      |        |
| CLEANING AND |               |           |         |      |        |
| PRIOR TO     |               |           |         |      |        |
| PACKAGING    |               |           |         |      |        |
| FOR          |               |           |         |      |        |
|              |               |           |         |      |        |
| SHIPMENT.    |               |           |         |      |        |
| LANGLEY HAS  |               |           |         |      |        |
| REPORTED     |               |           |         |      |        |
| THAT THIS    |               |           |         |      |        |
| PARTICULAR   |               |           |         |      |        |
| SEAL WAS     |               |           |         |      |        |
|              |               |           |         |      |        |
| REWORKED DUE |               |           |         |      |        |
| TO           |               |           |         |      |        |
| CO           |               |           |         |      |        |
| NTAMINATION. |               |           |         |      |        |
| REFERENCE    |               |           |         |      |        |
| LANGLEY      |               |           |         |      |        |
| CO           |               |           |         |      |        |
| MMUNICATION, |               |           |         |      |        |
| DATED        |               |           |         |      |        |
|              |               |           |         |      |        |
| 5/5/95, AND  |               |           |         |      |        |
| CCMAIL FROM  |               |           |         |      |        |
| PROCUREMENT  |               |           |         |      |        |
| QUALITY,     |               |           |         |      |        |
| DATED        |               |           |         |      |        |
| 5/16/95      |               |           |         |      |        |
|              |               |           |         |      |        |
| C. ISSUE A   |               |           |         |      |        |
| SCAR TO      |               |           |         |      |        |
| SUPPLIER FOR |               |           |         |      |        |
| CAUSE AND    |               |           |         |      |        |
| CORRECTIVE   |               |           |         |      |        |
| ACTION       |               |           |         |      |        |
|              |               |           |         |      |        |
| RES          |               |           |         |      |        |
| PONSIBILITY: |               |           |         |      |        |
| M.           |               |           |         |      |        |
| MCA          |               |           |         |      |        |
| NDREW/3742 - |               |           |         |      |        |
| D.           |               |           |         |      |        |
| W            |               |           |         |      |        |
| ESTPHAL/3740 |               |           |         |      |        |
|              |               |           |         |      |        |
| COMPLETE     |               |           |         |      |        |
| 5/5/95       |               |           |         |      |        |
|              |               |           |         |      |        |
| CLOSURE      |               |           |         |      |        |
| STATEMENT    |               |           |         |      |        |
|              |               |           |         |      |        |
| SCAR 95-064  |               |           |         |      |        |
| ISSUED       |               |           |         |      |        |
| 5/5/95       |               |           |         |      |        |
|              |               |           |         |      |        |
| D. SUPPLIER  |               |           |         |      |        |
| (LANGLEY     |               |           |         |      |        |
| CORPORATION) |               |           |         |      |        |
| TO EVALUATE  |               |           |         |      |        |
| THE SEAL     |               |           |         |      |        |
| DEFECT AND   |               |           |         |      |        |
|              |               |           |         |      |        |
| REVIEW THEIR |               |           |         |      |        |
| M            |               |           |         |      |        |
| ANUFACTURING |               |           |         |      |        |
| PROCESSES    |               |           |         |      |        |
| FOR CAUSE    |               |           |         |      |        |
| D            |               |           |         |      |        |
| ETERMINATION |               |           |         |      |        |
| AND          |               |           |         |      |        |
|              |               |           |         |      |        |
| IMPLEMENT    |               |           |         |      |        |
| CORRECTIVE   |               |           |         |      |        |
| ACTIONS TO   |               |           |         |      |        |
| PREVENT      |               |           |         |      |        |
| RECURRENCE   |               |           |         |      |        |
|              |               |           |         |      |        |
| RES          |               |           |         |      |        |
| PONSIBILITY: |               |           |         |      |        |
| R.           |               |           |         |      |        |
| TORT         |               |           |         |      |        |
| ORICH/3760 - |               |           |         |      |        |
| S.           |               |           |         |      |        |
| PARIKH/3760  |               |           |         |      |        |
|              |               |           |         |      |        |
| LANGLEY      |               |           |         |      |        |
| CORPORATION  |               |           |         |      |        |
|              |               |           |         |      |        |
| COMPLETE     |               |           |         |      |        |
| 6/9/95       |               |           |         |      |        |
|              |               |           |         |      |        |
| \* CLOSURE   |               |           |         |      |        |
| STATEMENT    |               |           |         |      |        |
|              |               |           |         |      |        |
| LANGLEY\'S   |               |           |         |      |        |
| ANALYSIS OF  |               |           |         |      |        |
| THE SEAL     |               |           |         |      |        |
| DEFECT       |               |           |         |      |        |
| ELIMINATED   |               |           |         |      |        |
| DAMAGE BY    |               |           |         |      |        |
| IMPACT       |               |           |         |      |        |
|              |               |           |         |      |        |
| OR THEIR     |               |           |         |      |        |
| SANDBLASTING |               |           |         |      |        |
| PROCEDURE    |               |           |         |      |        |
| USED PRIOR   |               |           |         |      |        |
| TO TEFLON    |               |           |         |      |        |
| COATING AS   |               |           |         |      |        |
|              |               |           |         |      |        |
| BEING THE    |               |           |         |      |        |
| CAUSE OF THE |               |           |         |      |        |
| DEPRESSED    |               |           |         |      |        |
| AREA. CAUSE  |               |           |         |      |        |
| HAS BEEN     |               |           |         |      |        |
| ATTRIBUTED   |               |           |         |      |        |
|              |               |           |         |      |        |
| TO AN        |               |           |         |      |        |
| INCONEL CHIP |               |           |         |      |        |
| BEING LODGED |               |           |         |      |        |
| BETWEEN THE  |               |           |         |      |        |
| SEAL AND     |               |           |         |      |        |
| LATHE CHUCK  |               |           |         |      |        |
|              |               |           |         |      |        |
| DURING THE   |               |           |         |      |        |
| MACHINING    |               |           |         |      |        |
| OPERATIONS.  |               |           |         |      |        |
| DURING THE   |               |           |         |      |        |
| TIME THIS    |               |           |         |      |        |
| SEAL WAS     |               |           |         |      |        |
|              |               |           |         |      |        |
| M            |               |           |         |      |        |
| ANUFACTURED, |               |           |         |      |        |
| IT WAS       |               |           |         |      |        |
| RESTRAINED   |               |           |         |      |        |
| ON THE LATHE |               |           |         |      |        |
| CHUCK BY     |               |           |         |      |        |
| FINGER       |               |           |         |      |        |
|              |               |           |         |      |        |
| CLAMPS. THE  |               |           |         |      |        |
| SEAL BODY    |               |           |         |      |        |
| WAS MACHINED |               |           |         |      |        |
| COMPLETE,    |               |           |         |      |        |
| THEN THE     |               |           |         |      |        |
| SEAL WAS     |               |           |         |      |        |
|              |               |           |         |      |        |
| FLIPPED      |               |           |         |      |        |
| WHILE        |               |           |         |      |        |
| MACHINING    |               |           |         |      |        |
| THE RECESS   |               |           |         |      |        |
| AND PRIMARY  |               |           |         |      |        |
| SEAL LIP. A  |               |           |         |      |        |
| CHIP         |               |           |         |      |        |
|              |               |           |         |      |        |
| WOULD HAVE   |               |           |         |      |        |
| RAISED THE   |               |           |         |      |        |
| PLANE OF THE |               |           |         |      |        |
| PRIMARY SEAL |               |           |         |      |        |
| LIP,         |               |           |         |      |        |
| CREATING THE |               |           |         |      |        |
|              |               |           |         |      |        |
| LOW SPOT     |               |           |         |      |        |
| ONCE THE     |               |           |         |      |        |
| SEAL WAS     |               |           |         |      |        |
| REMOVED AND  |               |           |         |      |        |
| RELAXED.     |               |           |         |      |        |
| THIS CAUSE   |               |           |         |      |        |
| IS           |               |           |         |      |        |
|              |               |           |         |      |        |
| SUPPORTED BY |               |           |         |      |        |
| THE FACT     |               |           |         |      |        |
| THAT THE     |               |           |         |      |        |
| PRIMARY SEAL |               |           |         |      |        |
| LIP PROFILE  |               |           |         |      |        |
|              |               |           |         |      |        |
| (ANGLES AND  |               |           |         |      |        |
| WIDTH) WAS   |               |           |         |      |        |
| NOT          |               |           |         |      |        |
| AFFECTED. IN |               |           |         |      |        |
| DECEMBER     |               |           |         |      |        |
| 1993 THE     |               |           |         |      |        |
|              |               |           |         |      |        |
| RESTRAINING  |               |           |         |      |        |
| METHOD WAS   |               |           |         |      |        |
| CHANGED TO   |               |           |         |      |        |
| HOLD THE     |               |           |         |      |        |
| SEAL BY THE  |               |           |         |      |        |
| OUTSIDE      |               |           |         |      |        |
|              |               |           |         |      |        |
| DIAMETER AND |               |           |         |      |        |
| EACH SIDE IS |               |           |         |      |        |
| MACHINED     |               |           |         |      |        |
| COMPLETE     |               |           |         |      |        |
| BEFORE       |               |           |         |      |        |
| FLIPPING THE |               |           |         |      |        |
|              |               |           |         |      |        |
| SEAL. BY     |               |           |         |      |        |
| LESSENING    |               |           |         |      |        |
| THE NUMBER   |               |           |         |      |        |
| OF SEAL      |               |           |         |      |        |
| FLIPS, THE   |               |           |         |      |        |
| CHANCES OF   |               |           |         |      |        |
|              |               |           |         |      |        |
| ENTRAPPING A |               |           |         |      |        |
| MATERIAL     |               |           |         |      |        |
| CHIP IS      |               |           |         |      |        |
| REDUCED.     |               |           |         |      |        |
| EFFECTIVE    |               |           |         |      |        |
| 6/5/95, AN   |               |           |         |      |        |
|              |               |           |         |      |        |
| ADDITIONAL   |               |           |         |      |        |
| INSPECTION   |               |           |         |      |        |
| STEP WAS     |               |           |         |      |        |
| ADDED FOR    |               |           |         |      |        |
| INSPECTION   |               |           |         |      |        |
| TO WITNESS   |               |           |         |      |        |
|              |               |           |         |      |        |
| FLATNESS     |               |           |         |      |        |
| CHECKS       |               |           |         |      |        |
| PERFORMED    |               |           |         |      |        |
| WITH THE     |               |           |         |      |        |
| SEAL STILL   |               |           |         |      |        |
| RESTRAINED   |               |           |         |      |        |
| ON THE       |               |           |         |      |        |
|              |               |           |         |      |        |
| MACHINING    |               |           |         |      |        |
| LATHE.       |               |           |         |      |        |
| LANGLEY      |               |           |         |      |        |
| REPORTED     |               |           |         |      |        |
| INSPECTING A |               |           |         |      |        |
| LOT OF       |               |           |         |      |        |
| 55L11-7T     |               |           |         |      |        |
|              |               |           |         |      |        |
| SEALS        |               |           |         |      |        |
| CURRENTLY IN |               |           |         |      |        |
| PRODUCTION   |               |           |         |      |        |
| AND FINDING  |               |           |         |      |        |
| NO SIMILAR   |               |           |         |      |        |
| DEFECT       |               |           |         |      |        |
|              |               |           |         |      |        |
| REFERENCE    |               |           |         |      |        |
| SCAR 95-064  |               |           |         |      |        |
| RESPONSE     |               |           |         |      |        |
|              |               |           |         |      |        |
| CAUSE        |               |           |         |      |        |
|              |               |           |         |      |        |
| DURING       |               |           |         |      |        |
| MACHINING    |               |           |         |      |        |
| OPERATIONS   |               |           |         |      |        |
| AN INCONEL   |               |           |         |      |        |
| CHIP BECAME  |               |           |         |      |        |
| LODGED       |               |           |         |      |        |
| BETWEEN      |               |           |         |      |        |
|              |               |           |         |      |        |
| THE SEAL AND |               |           |         |      |        |
| LATHE CHUCK, |               |           |         |      |        |
| DEFORMING    |               |           |         |      |        |
| THE SEAL BY  |               |           |         |      |        |
| TEMPORARILY  |               |           |         |      |        |
| RAISING      |               |           |         |      |        |
|              |               |           |         |      |        |
| THE PRIMARY  |               |           |         |      |        |
| SEAL HEIGHT. |               |           |         |      |        |
| UPON         |               |           |         |      |        |
| RELEASE, THE |               |           |         |      |        |
| SEAL HEIGHT  |               |           |         |      |        |
| BECAME       |               |           |         |      |        |
|              |               |           |         |      |        |
| UNDERSIZED.  |               |           |         |      |        |
| THIS IS AN   |               |           |         |      |        |
| ISOLATED     |               |           |         |      |        |
| INCIDENT     |               |           |         |      |        |
|              |               |           |         |      |        |
| \* TASK II.  |               |           |         |      |        |
| CORRECTIVE   |               |           |         |      |        |
| ACTION       |               |           |         |      |        |
|              |               |           |         |      |        |
| \- THE       |               |           |         |      |        |
| MACHINING    |               |           |         |      |        |
| TECHNIQUE    |               |           |         |      |        |
| WAS CHANGED  |               |           |         |      |        |
| IN DECEMBER  |               |           |         |      |        |
| 1993 TO      |               |           |         |      |        |
| RESTRAIN     |               |           |         |      |        |
|              |               |           |         |      |        |
| THE SEAL IN  |               |           |         |      |        |
| THE LATHE BY |               |           |         |      |        |
| AN IMPROVED  |               |           |         |      |        |
| METHOD AND   |               |           |         |      |        |
| CHANGING THE |               |           |         |      |        |
|              |               |           |         |      |        |
| MACHINING    |               |           |         |      |        |
| SEQUENCE,    |               |           |         |      |        |
| LESSENING    |               |           |         |      |        |
| THE CHANCES  |               |           |         |      |        |
| OF           |               |           |         |      |        |
| ENTRAPPING A |               |           |         |      |        |
|              |               |           |         |      |        |
| MATERIAL     |               |           |         |      |        |
| CHIP         |               |           |         |      |        |
|              |               |           |         |      |        |
| \- EFFECTIVE |               |           |         |      |        |
| 6/5/95,      |               |           |         |      |        |
| ADDITIONAL   |               |           |         |      |        |
| INSPECTION   |               |           |         |      |        |
| STEP WAS     |               |           |         |      |        |
| ADDED TO     |               |           |         |      |        |
| WITNESS      |               |           |         |      |        |
|              |               |           |         |      |        |
| THE SEAL     |               |           |         |      |        |
| FLATNESS     |               |           |         |      |        |
| CHECK PRIOR  |               |           |         |      |        |
| TO REMOVING  |               |           |         |      |        |
| THE SEAL     |               |           |         |      |        |
| FROM THE     |               |           |         |      |        |
|              |               |           |         |      |        |
| MACHINING    |               |           |         |      |        |
| LATHE        |               |           |         |      |        |
|              |               |           |         |      |        |
| TASK III.    |               |           |         |      |        |
| CLEARANCE OF |               |           |         |      |        |
| E            |               |           |         |      |        |
| FFECTIVITIES |               |           |         |      |        |
|              |               |           |         |      |        |
| \- ET-80     |               |           |         |      |        |
| JOINT        |               |           |         |      |        |
| REWORKED.    |               |           |         |      |        |
| INSTALLATION |               |           |         |      |        |
| ACCEPTABLE   |               |           |         |      |        |
|              |               |           |         |      |        |
| \- ALL       |               |           |         |      |        |
| OTHERS, NO   |               |           |         |      |        |
| ISSUE.       |               |           |         |      |        |
| PROBLEMS OF  |               |           |         |      |        |
| THIS NATURE  |               |           |         |      |        |
| ARE DETECTED |               |           |         |      |        |
|              |               |           |         |      |        |
| DURING       |               |           |         |      |        |
| ACCEPTANCE   |               |           |         |      |        |
| TEST         |               |           |         |      |        |
|              |               |           |         |      |        |
| NOTE: THIS   |               |           |         |      |        |
| IS ALSO THE  |               |           |         |      |        |
| DEFERRAL     |               |           |         |      |        |
| RATIONALE    |               |           |         |      |        |
|              |               |           |         |      |        |
| \* TASK IV.  |               |           |         |      |        |
| CAPS CLOSURE |               |           |         |      |        |
| SUMMARY      |               |           |         |      |        |
|              |               |           |         |      |        |
| THE LH2      |               |           |         |      |        |
| SIPHON COVER |               |           |         |      |        |
| LEAK WAS     |               |           |         |      |        |
| FOUND TO BE  |               |           |         |      |        |
| CAUSED BY A  |               |           |         |      |        |
| M            |               |           |         |      |        |
| ANUFACTURING |               |           |         |      |        |
|              |               |           |         |      |        |
| DEFECT ON    |               |           |         |      |        |
| THE NAFLEX   |               |           |         |      |        |
| SEAL PRIMARY |               |           |         |      |        |
| SEAL LIP.    |               |           |         |      |        |
| THE CAUSE OF |               |           |         |      |        |
| THE          |               |           |         |      |        |
|              |               |           |         |      |        |
| DEFECT WAS   |               |           |         |      |        |
| DETERMINED   |               |           |         |      |        |
| BY THE       |               |           |         |      |        |
| SUPPLIER TO  |               |           |         |      |        |
| HAVE BEEN A  |               |           |         |      |        |
| MATERIAL     |               |           |         |      |        |
| CHIP         |               |           |         |      |        |
|              |               |           |         |      |        |
| LODGED       |               |           |         |      |        |
| BETWEEN THE  |               |           |         |      |        |
| SEAL AND     |               |           |         |      |        |
| MACHINING    |               |           |         |      |        |
| LATHE WHICH  |               |           |         |      |        |
| TEMPORARILY  |               |           |         |      |        |
|              |               |           |         |      |        |
| RAISED THE   |               |           |         |      |        |
| LIP PLANE    |               |           |         |      |        |
| DURING       |               |           |         |      |        |
| MACHINING.   |               |           |         |      |        |
| AFTER        |               |           |         |      |        |
| REMOVAL FROM |               |           |         |      |        |
| THE          |               |           |         |      |        |
|              |               |           |         |      |        |
| LATHE THE    |               |           |         |      |        |
| SEAL         |               |           |         |      |        |
| RETURNED TO  |               |           |         |      |        |
| ITS FREE     |               |           |         |      |        |
| STATE        |               |           |         |      |        |
| CREATING A   |               |           |         |      |        |
| DEPRESSED    |               |           |         |      |        |
| AREA         |               |           |         |      |        |
|              |               |           |         |      |        |
| ON THE LIP.  |               |           |         |      |        |
| CORRECTIVE   |               |           |         |      |        |
| ACTIONS HAVE |               |           |         |      |        |
| INCLUDED     |               |           |         |      |        |
| PREVIOUSLY   |               |           |         |      |        |
|              |               |           |         |      |        |
| IMPLEMENTED  |               |           |         |      |        |
| CHANGES TO   |               |           |         |      |        |
| THE WAY THE  |               |           |         |      |        |
| SEAL IS      |               |           |         |      |        |
| MACHINED,    |               |           |         |      |        |
| BOTH IN THE  |               |           |         |      |        |
|              |               |           |         |      |        |
| WAY THE SEAL |               |           |         |      |        |
| IS           |               |           |         |      |        |
| RESTRAINED   |               |           |         |      |        |
| IN THE LATHE |               |           |         |      |        |
| AND THE      |               |           |         |      |        |
| SEQUENCE OF  |               |           |         |      |        |
|              |               |           |         |      |        |
| MACHINING,   |               |           |         |      |        |
| AND BY       |               |           |         |      |        |
| ADDING AN    |               |           |         |      |        |
| ADDITIONAL   |               |           |         |      |        |
| INSPECTION   |               |           |         |      |        |
| STEP TO      |               |           |         |      |        |
| WITNESS      |               |           |         |      |        |
|              |               |           |         |      |        |
| THE FLATNESS |               |           |         |      |        |
| CHECK ON THE |               |           |         |      |        |
| SEAL WHILE   |               |           |         |      |        |
| THE SEAL IS  |               |           |         |      |        |
| STILL        |               |           |         |      |        |
| RESTRAINED   |               |           |         |      |        |
|              |               |           |         |      |        |
| THESE        |               |           |         |      |        |
| CORRECTIVE   |               |           |         |      |        |
| ACTIONS WILL |               |           |         |      |        |
| PREVENT A    |               |           |         |      |        |
| RECURRENCE   |               |           |         |      |        |
| OF THIS TYPE |               |           |         |      |        |
|              |               |           |         |      |        |
| DEFECT.      |               |           |         |      |        |
| DEFECTS OF   |               |           |         |      |        |
| THIS TYPE    |               |           |         |      |        |
| ARE          |               |           |         |      |        |
| DETECTABLE   |               |           |         |      |        |
| THROUGH LEAK |               |           |         |      |        |
| TEST,        |               |           |         |      |        |
|              |               |           |         |      |        |
| THEREFORE,   |               |           |         |      |        |
| NO CONCERN   |               |           |         |      |        |
| EXIST        |               |           |         |      |        |
| RELATIVE TO  |               |           |         |      |        |
| ALREADY      |               |           |         |      |        |
| INSTALLED    |               |           |         |      |        |
| AND          |               |           |         |      |        |
|              |               |           |         |      |        |
| TESTED       |               |           |         |      |        |
| SEALS. NO    |               |           |         |      |        |
| FLEET        |               |           |         |      |        |
| CONCERN      |               |           |         |      |        |
| EXISTS. THIS |               |           |         |      |        |
| DEFECT IS    |               |           |         |      |        |
| ISOLATED     |               |           |         |      |        |
|              |               |           |         |      |        |
| BASED ON A   |               |           |         |      |        |
| HISTORY      |               |           |         |      |        |
| REVIEW OF    |               |           |         |      |        |
| SEAL DEFECTS |               |           |         |      |        |
| SHOWING NO   |               |           |         |      |        |
| PAST DEFECTS |               |           |         |      |        |
|              |               |           |         |      |        |
| OF THIS      |               |           |         |      |        |
| NATURE AND   |               |           |         |      |        |
| THE SUPPLIER |               |           |         |      |        |
| REINSPECTION |               |           |         |      |        |
| OF AN        |               |           |         |      |        |
| IN-PROCESS   |               |           |         |      |        |
| LOT          |               |           |         |      |        |
|              |               |           |         |      |        |
| OF THE SAME  |               |           |         |      |        |
| SEAL FINDING |               |           |         |      |        |
| NO DEFECTS   |               |           |         |      |        |
|              |               |           |         |      |        |
| THIS CAPS IS |               |           |         |      |        |
| CLOSED. NO   |               |           |         |      |        |
| FURTHER      |               |           |         |      |        |
| ACTION       |               |           |         |      |        |
| REQUIRED     |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+
| **MSFC       |               |           |         |      |        |
| Response/C   |               |           |         |      |        |
| oncurrence** |               |           |         |      |        |
|              |               |           |         |      |        |
| 05/11/95 -   |               |           |         |      |        |
| DEFERRAL     |               |           |         |      |        |
| CONCURRENCE  |               |           |         |      |        |
|              |               |           |         |      |        |
| THIS REPORT  |               |           |         |      |        |
| HAS BEEN     |               |           |         |      |        |
| DEFERRED FOR |               |           |         |      |        |
| THE NEXT SIX |               |           |         |      |        |
| MONTHS PER   |               |           |         |      |        |
| NSTS 07700,  |               |           |         |      |        |
|              |               |           |         |      |        |
| VOLUME XI,   |               |           |         |      |        |
| PARAGRAPH    |               |           |         |      |        |
| 3.4.1, ITEM  |               |           |         |      |        |
| C AND NSTS   |               |           |         |      |        |
| 08126 REV. F |               |           |         |      |        |
| PARAGRAPH    |               |           |         |      |        |
|              |               |           |         |      |        |
| 3.3.10.1,    |               |           |         |      |        |
| ITEM D WHICH |               |           |         |      |        |
| STATES \"THE |               |           |         |      |        |
| PROBLEM      |               |           |         |      |        |
| CONDITION IS |               |           |         |      |        |
| CLEARLY      |               |           |         |      |        |
|              |               |           |         |      |        |
| SCREENED BY  |               |           |         |      |        |
| PREFLIGHT    |               |           |         |      |        |
| CHECKOUT OR  |               |           |         |      |        |
| SPECIAL      |               |           |         |      |        |
| TESTS.\"     |               |           |         |      |        |
|              |               |           |         |      |        |
| THE DEFERRAL |               |           |         |      |        |
| STATUS HAS   |               |           |         |      |        |
| BEEN         |               |           |         |      |        |
| APPROVED BY  |               |           |         |      |        |
| THE EXTERNAL |               |           |         |      |        |
| TANK PROJECT |               |           |         |      |        |
|              |               |           |         |      |        |
| MANAGER, MR. |               |           |         |      |        |
| PARKER       |               |           |         |      |        |
| COUNTS       |               |           |         |      |        |
|              |               |           |         |      |        |
| CRAIG E.     |               |           |         |      |        |
| SUMNER       |               |           |         |      |        |
| (SIGNED      |               |           |         |      |        |
| 05/18/95)    |               |           |         |      |        |
|              |               |           |         |      |        |
| \            |               |           |         |      |        |
| -\-\-\-\-\-\ |               |           |         |      |        |
| -\-\-\-\-\-\ |               |           |         |      |        |
| -\-\-\-\-\-\ |               |           |         |      |        |
| -\-\-\-\-\-\ |               |           |         |      |        |
| -\-\-\-\-\-\ |               |           |         |      |        |
| -\-\-\-\-\-\ |               |           |         |      |        |
| -\-\-\-\-\-\ |               |           |         |      |        |
| -\-\-\-\-\-\ |               |           |         |      |        |
| -\-\-\-\-\-\ |               |           |         |      |        |
| -\-\-\-\-\-\ |               |           |         |      |        |
| -\-\-\-\-\-- |               |           |         |      |        |
+--------------+---------------+-----------+---------+------+--------+

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

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

  ---------------- ----------------- ---------------- ----------- ----------- ------------
  **MSFC           **IFA#**\         **Contractor     **JSC#**\   **KSC#**\   **EICN#**\
  Report#**\       \--               RPT#**\          \--         \--         \--
  A16486                             P-077                                    

  **Asmnt Part#**\ **Asmnt Part      **Asmnt                                  
  55L11-7T         Name**\           Serial/Lot#**\                           
                   NAFLEX SEAL       835490085517                             

  **HCRIT CD**\    **FCRIT CD**\     **CAUSE CD**\    **FAIL                  
  \--              \--               \--              MODE**\                 
                                                      \--                     

  **Asmnt FMEA**\  **Asmnt FM**\     **FMEA CSE**\    **FMEA                  
  2.10.6.1         1                 \--              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      **Associated                             
  LRU#**\          LRU#**\           LRU#**\                                  
  \--              \--               \--                                      

  **MAJOR DESIGN                                                              
  CHANGES**                                                                   

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

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