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

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

+--------------+---------------+-----------+--------+------+--------+
| **MSFC       | **In-Flight   | **C       | **J    | *    |        |
| Record \#**\ | Anomaly       | ontractor | SC#**\ | *KSC |        |
| A10051       | Number**\     | Report    | \--    | #**\ |        |
|              | \--           | Number**\ |        | \--  |        |
|              |               | S-069     |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **Problem    |               |           |        |      |        |
| Title**\     |               |           |        |      |        |
| LH2 TANK     |               |           |        |      |        |
| CLIP         |               |           |        |      |        |
| PARTIALLY    |               |           |        |      |        |
| SEPARATED    |               |           |        |      |        |
| FROM AFT     |               |           |        |      |        |
| DOME -       |               |           |        |      |        |
| LWT-35/MFG   |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **EICN#**\   | **ELEMENT**\  | **Cont    | **FS   | **   |        |
| \--          | ET            | ractor**\ | CM#**\ | FCRI |        |
|              |               | MMMSS     | \--    | T**\ |        |
|              |               |           |        | 1    |        |
+--------------+---------------+-----------+--------+------+--------+
| **HCRIT**\   | **Sys_Lvl**\  | **Misc    |        |      |        |
| 1            | Y             | Codes**\  |        |      |        |
|              |               | A **(6)** |        |      |        |
|              |               | B C D E   |        |      |        |
|              |               | **(X)** F |        |      |        |
|              |               | G H I J K |        |      |        |
|              |               | L M N O   |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| *            | **NO          | *         | *      | *    |        |
| *HARDWARE**\ | MENCLATURE**\ | *PART#**\ | *SER/L | *MAN |        |
| EIM          | LH2 TANK CLIP | 809149    | OT#**\ | UFAC |        |
|              |               | 00992-002 | N/A    | TURE |        |
|              |               |           |        | R**\ |        |
|              |               |           |        | MMC  |        |
+--------------+---------------+-----------+--------+------+--------+
| *            | **NO          | *         | *      | *    |        |
| *HARDWARE**\ | MENCLATURE**\ | *PART#**\ | *SER/L | *MAN |        |
| LRU          | LH2 TANK WELD | 80        | OT#**\ | UFAC |        |
|              | ASSY          | 914000000 | N/A    | TURE |        |
|              |               |           |        | R**\ |        |
|              |               |           |        | MMC  |        |
+--------------+---------------+-----------+--------+------+--------+
| *            | **NO          | *         | *      | *    |        |
| *HARDWARE**\ | MENCLATURE**\ | *PART#**\ | *SER/L | *MAN |        |
| NCA          | LH2 TANK CLIP | 809149    | OT#**\ | UFAC |        |
|              |               | 00992-002 | N/A    | TURE |        |
|              |               |           |        | R**\ |        |
|              |               |           |        | MMC  |        |
+--------------+---------------+-----------+--------+------+--------+
| **Test/      | **Prevailing  | **F /     | **Fail | **   |        |
| Operation**\ | Condtion**\   | U**\      | M      | Caus |        |
| M - MFG      | N -           | F         | ode**\ | e**\ |        |
|              | INSPECTION    |           | UC -   | MN - |        |
|              |               |           | UNSAT  | MFG  |        |
|              |               |           |        | -ISP |        |
+--------------+---------------+-----------+--------+------+--------+
| **System**\  | **Defect**\   | **Ma      | **Work | **   |        |
| ELECTRICAL   | DD - DETACH   | terial**\ | Cont   | Fail |        |
|              |               | L -       | act**\ | Dat  |        |
|              |               | FASTNR    | C.     | e**\ |        |
|              |               |           | VOGEL  | 01   |        |
|              |               |           |        | /03/ |        |
|              |               |           |        | 1986 |        |
+--------------+---------------+-----------+--------+------+--------+
| **Received   | **Date        | **FMEA    | **IFA: | *    |        |
| at MSFC**\   | Isolated**\   | Ref       | M      | *Mis |        |
| 05/21/1986   | \--           | erence**\ | ission | sion |        |
|              |               | 1.2.1     | Ph     | Ela  |        |
|              |               |           | ase**\ | psed |        |
|              |               |           | \--    | Tim  |        |
|              |               |           |        | e**\ |        |
|              |               |           |        | \--  |        |
+--------------+---------------+-----------+--------+------+--------+
| *            |               | **S       |        | **   |        |
| *Location**\ |               | ymptom**\ |        | Time |        |
| MAF          |               | UC -      |        | Cycl |        |
|              |               | UNSAT     |        | e**\ |        |
|              |               |           |        | \--  |        |
+--------------+---------------+-----------+--------+------+--------+
| *            |               |           |        |      |        |
| *Effectivity |               |           |        |      |        |
| Text**\      |               |           |        |      |        |
| LWTS 16, 20, |               |           |        |      |        |
| 21, 22, 24   |               |           |        |      |        |
| AND UP       |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **Vehicle    |               |           |        |      |        |
| Effectivity  |               |           |        |      |        |
| Codes**      |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **Vehicle    | **Vehicle     | **Vehicle | **V    | *    |        |
| 1**\         | 2**\          | 3**\      | ehicle | *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**\      | \--           |           | Act    |      |        |
| \--          |               |           | ion**\ |      |        |
|              |               |           | \--    |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **I          |               |           |        |      |        |
| nvestigation |               |           |        |      |        |
| / Resolution |               |           |        |      |        |
| Summary**    |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **Last MSFC  | **CN RSLV     | **Defer   | **Add  | *    |        |
| Update**\    | SBMT**\       | Date**\   | D      | *R/C |        |
| 02/22/1995   | 09/28/1987    | \--       | ate**\ | Code |        |
|              |               |           | \--    | s**\ |        |
|              |               |           |        | 1 -  |        |
|              |               |           |        | DES  |        |
|              |               |           |        | \--  |        |
|              |               |           |        | \--  |        |
+--------------+---------------+-----------+--------+------+--------+
| **Assignee** |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **Design**\  | **Chief       | **S &     | **Proj | *    |        |
| J. WHITE     | Engineer**\   | MA**\     | ect**\ | *Pro |        |
|              | J. NICHOLS    | R.        | M.     | ject |        |
|              |               | JACKSON   | PESSIN | MG   |        |
|              |               |           |        | R**\ |        |
|              |               |           |        | \--  |        |
+--------------+---------------+-----------+--------+------+--------+
| **Approval** |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **Design**\  | **Chief       | **S &     | **Proj | *    |        |
| \--          | Engineer**\   | MA**\     | ect**\ | *Pro |        |
|              | J. NICHOLS    | R.        | M.     | ject |        |
|              |               | JACKSON   | PESSIN | MG   |        |
|              |               |           |        | R**\ |        |
|              |               |           |        | \--  |        |
+--------------+---------------+-----------+--------+------+--------+
| **PAC        | **PAC Review  | **MSFC    | **Sta  | *    |        |
| Assignee**\  | Complete**\   | Closure   | tus**\ | *F/A |        |
| J.EL-IBRAHIM | JE            | Date**\   | C -    | C    |        |
|              |               | 1         | CLOSED | ompl |        |
|              |               | 1/04/1987 |        | etio |        |
|              |               |           |        | n**\ |        |
|              |               |           |        | \--  |        |
+--------------+---------------+-----------+--------+------+--------+
| **Problem    | **SEV**\      | **Program | **R    | **O  |        |
| Type**\      | \--           | Name**\   | EVL**\ | 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**\         |           |        |      |        |
| \--          | \--           |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **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** |               |           |        |      |        |
|              |               |           |        |      |        |
| REF: MARS    |               |           |        |      |        |
| T-81209 A    |               |           |        |      |        |
| CLIP ON      |               |           |        |      |        |
| LWT-35 LH2   |               |           |        |      |        |
| TANK         |               |           |        |      |        |
| PARTIALLY    |               |           |        |      |        |
| SEPARATED    |               |           |        |      |        |
| FROM         |               |           |        |      |        |
|              |               |           |        |      |        |
| THE AFT      |               |           |        |      |        |
| DOME. ONE OF |               |           |        |      |        |
| ITS TWO TIG  |               |           |        |      |        |
| SPOT WELDS   |               |           |        |      |        |
| WAS ONLY     |               |           |        |      |        |
| PARTIALLY    |               |           |        |      |        |
| FORMED;      |               |           |        |      |        |
|              |               |           |        |      |        |
| THE AREA OF  |               |           |        |      |        |
| PENETRATION  |               |           |        |      |        |
| WAS          |               |           |        |      |        |
| S            |               |           |        |      |        |
| IGNIFICANTLY |               |           |        |      |        |
| LESS THAN    |               |           |        |      |        |
| NORMAL. A    |               |           |        |      |        |
| SIMILAR      |               |           |        |      |        |
|              |               |           |        |      |        |
| PROBLEM WAS  |               |           |        |      |        |
| SEEN ON      |               |           |        |      |        |
| LWT\'S 39    |               |           |        |      |        |
| AND 41 AS    |               |           |        |      |        |
| WELL. DURING |               |           |        |      |        |
| ANALYSIS OF  |               |           |        |      |        |
|              |               |           |        |      |        |
| INVENTORY    |               |           |        |      |        |
| STOCK,       |               |           |        |      |        |
| ANOTHER      |               |           |        |      |        |
| PROBLEM WAS  |               |           |        |      |        |
| DISCOVERED.  |               |           |        |      |        |
| TWO CLIPS    |               |           |        |      |        |
| HAD          |               |           |        |      |        |
|              |               |           |        |      |        |
| CONDUCTIVITY |               |           |        |      |        |
| AND HARDNESS |               |           |        |      |        |
| READINGS     |               |           |        |      |        |
| S            |               |           |        |      |        |
| IGNIFICANTLY |               |           |        |      |        |
| DIFFERENT    |               |           |        |      |        |
| FROM 2219    |               |           |        |      |        |
|              |               |           |        |      |        |
| T-62         |               |           |        |      |        |
| TYPICALS     |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **Contractor |               |           |        |      |        |
| In           |               |           |        |      |        |
| vestigation/ |               |           |        |      |        |
| Resolution** |               |           |        |      |        |
|              |               |           |        |      |        |
| R/C - A      |               |           |        |      |        |
| COMPLETE     |               |           |        |      |        |
| RETROFIT HAS |               |           |        |      |        |
| BEEN         |               |           |        |      |        |
| INITIATED    |               |           |        |      |        |
| FOR THE      |               |           |        |      |        |
| FLEET. ALL   |               |           |        |      |        |
| LH2 AFT      |               |           |        |      |        |
|              |               |           |        |      |        |
| DOME CLIPS   |               |           |        |      |        |
| SHALL BE     |               |           |        |      |        |
| BONDED WITH  |               |           |        |      |        |
| SCRIM CLOTH, |               |           |        |      |        |
| LAID OVER    |               |           |        |      |        |
| THE EXISTING |               |           |        |      |        |
|              |               |           |        |      |        |
| CLIP. A      |               |           |        |      |        |
| REDESIGNED   |               |           |        |      |        |
| FILLET       |               |           |        |      |        |
| WELDED CLIPS |               |           |        |      |        |
| WITH \"T\"   |               |           |        |      |        |
| CONFI-       |               |           |        |      |        |
| GURATION     |               |           |        |      |        |
| HAVE         |               |           |        |      |        |
|              |               |           |        |      |        |
| BEEN         |               |           |        |      |        |
| IMPLEMENTED  |               |           |        |      |        |
| FOR          |               |           |        |      |        |
| PRODUCTION.  |               |           |        |      |        |
| 5/21/86      |               |           |        |      |        |
| LAUNCH       |               |           |        |      |        |
| C            |               |           |        |      |        |
| ONSTRAINTS - |               |           |        |      |        |
| LWT\'S 16,   |               |           |        |      |        |
|              |               |           |        |      |        |
| 20, 21, 22,  |               |           |        |      |        |
| 24 AND UP    |               |           |        |      |        |
| HAVE         |               |           |        |      |        |
| CONSTRAINTS  |               |           |        |      |        |
| TO LAUNCH    |               |           |        |      |        |
| BASED UPON   |               |           |        |      |        |
| FMEA         |               |           |        |      |        |
|              |               |           |        |      |        |
| ANALYSIS OF  |               |           |        |      |        |
| THE LH2      |               |           |        |      |        |
| DEPLETION    |               |           |        |      |        |
| SENSOR       |               |           |        |      |        |
| SYSTEM. A    |               |           |        |      |        |
| FAILURE OF   |               |           |        |      |        |
| THE BRACKETS |               |           |        |      |        |
|              |               |           |        |      |        |
| MAY LEAD TO  |               |           |        |      |        |
| LOSS OF      |               |           |        |      |        |
| SIGNAL FROM  |               |           |        |      |        |
| THIS SYSTEM. |               |           |        |      |        |
| SUSPECT      |               |           |        |      |        |
| CAUSE OF     |               |           |        |      |        |
| POOR AREA    |               |           |        |      |        |
|              |               |           |        |      |        |
| OF           |               |           |        |      |        |
| PENETRATION  |               |           |        |      |        |
| TO BE RANDOM |               |           |        |      |        |
| PRODUCTION   |               |           |        |      |        |
| VARIATION    |               |           |        |      |        |
| DUE TO       |               |           |        |      |        |
| DIFFICULTY   |               |           |        |      |        |
| OF           |               |           |        |      |        |
|              |               |           |        |      |        |
| OERATION.    |               |           |        |      |        |
| MMC          |               |           |        |      |        |
| MANAGEMENT   |               |           |        |      |        |
| HAS ASSIGNED |               |           |        |      |        |
| TASKS FOR    |               |           |        |      |        |
| I            |               |           |        |      |        |
| NVESTIGATION |               |           |        |      |        |
| OF THIS      |               |           |        |      |        |
|              |               |           |        |      |        |
| PROBLEM AS   |               |           |        |      |        |
| FOLLOWS:     |               |           |        |      |        |
| GENERAL -    |               |           |        |      |        |
| ONE CLIP     |               |           |        |      |        |
| (8091        |               |           |        |      |        |
| 4900992-002) |               |           |        |      |        |
| ON LWT-35,   |               |           |        |      |        |
| LH2          |               |           |        |      |        |
|              |               |           |        |      |        |
| AFT DOME,    |               |           |        |      |        |
| WAS SEVERED  |               |           |        |      |        |
| AT ONE OF    |               |           |        |      |        |
| ITS TWO TACK |               |           |        |      |        |
| WELDS. THE   |               |           |        |      |        |
| BREAK        |               |           |        |      |        |
| OCCURRED     |               |           |        |      |        |
|              |               |           |        |      |        |
| AFTER        |               |           |        |      |        |
| ACCEPTANCE   |               |           |        |      |        |
| OF THE CLIP  |               |           |        |      |        |
| INSTALLATION |               |           |        |      |        |
| (AT 5083     |               |           |        |      |        |
| TOOL,        |               |           |        |      |        |
| BUILDING     |               |           |        |      |        |
| 103)         |               |           |        |      |        |
|              |               |           |        |      |        |
| AND WAS      |               |           |        |      |        |
| DISCOVERED   |               |           |        |      |        |
| DURING       |               |           |        |      |        |
| ELECTRICAL   |               |           |        |      |        |
| CABLE        |               |           |        |      |        |
| INSTALLATION |               |           |        |      |        |
| (AT CELL     |               |           |        |      |        |
| \"E\" IN     |               |           |        |      |        |
|              |               |           |        |      |        |
| VAB          |               |           |        |      |        |
| BUILDING).   |               |           |        |      |        |
| THIS HALF OF |               |           |        |      |        |
| THE CLIP WAS |               |           |        |      |        |
| REMOVED FOR  |               |           |        |      |        |
| ANALYSIS;    |               |           |        |      |        |
| HARDNESS     |               |           |        |      |        |
|              |               |           |        |      |        |
| AND          |               |           |        |      |        |
| CONDUCTIVITY |               |           |        |      |        |
| READINGS     |               |           |        |      |        |
| WERE         |               |           |        |      |        |
| SLIGHTLY     |               |           |        |      |        |
| OUT. THE     |               |           |        |      |        |
| FRACTURE,    |               |           |        |      |        |
| HOWEVER, WAS |               |           |        |      |        |
|              |               |           |        |      |        |
| ATTRIBUTED   |               |           |        |      |        |
| TO THE       |               |           |        |      |        |
| ACCIDENTAL   |               |           |        |      |        |
| IMPACT OF    |               |           |        |      |        |
| ITS          |               |           |        |      |        |
| PARTIALLY    |               |           |        |      |        |
| FORMED SPOT  |               |           |        |      |        |
| WELD         |               |           |        |      |        |
|              |               |           |        |      |        |
| THAT HAD     |               |           |        |      |        |
| A            |               |           |        |      |        |
| PPROXIMATELY |               |           |        |      |        |
| 20 PERCENT   |               |           |        |      |        |
| OF THE AREA  |               |           |        |      |        |
| OF           |               |           |        |      |        |
| PENETRATION  |               |           |        |      |        |
| COMPARED     |               |           |        |      |        |
|              |               |           |        |      |        |
| TO A NORMAL  |               |           |        |      |        |
| WELD.        |               |           |        |      |        |
| (RESULTS     |               |           |        |      |        |
| WERE SIMILAR |               |           |        |      |        |
| ON LWT\'S 39 |               |           |        |      |        |
| AND 41.) THE |               |           |        |      |        |
| SLIGHT       |               |           |        |      |        |
|              |               |           |        |      |        |
| D            |               |           |        |      |        |
| ISCREPANCIES |               |           |        |      |        |
| THAT WERE    |               |           |        |      |        |
| FOUND IN     |               |           |        |      |        |
| HARDNESS AND |               |           |        |      |        |
| CONDUCTIVITY |               |           |        |      |        |
| PRECIPITATED |               |           |        |      |        |
|              |               |           |        |      |        |
| FURTHER      |               |           |        |      |        |
| IN           |               |           |        |      |        |
| VESTIGATION. |               |           |        |      |        |
| CHEMISTRY    |               |           |        |      |        |
| WAS VERIFIED |               |           |        |      |        |
| TO BE GOOD,  |               |           |        |      |        |
| BUT A RANDOM |               |           |        |      |        |
|              |               |           |        |      |        |
| CHECK OF     |               |           |        |      |        |
| INVENTORY    |               |           |        |      |        |
| SHOWED       |               |           |        |      |        |
| RESULTS IN   |               |           |        |      |        |
| HARDNESS AND |               |           |        |      |        |
| CONDUCTIVITY |               |           |        |      |        |
| SIMILAR      |               |           |        |      |        |
|              |               |           |        |      |        |
| TO WHAT WAS  |               |           |        |      |        |
| FOUND ABOVE. |               |           |        |      |        |
| A SHEET      |               |           |        |      |        |
| SAMPLE WAS   |               |           |        |      |        |
| SENT TO      |               |           |        |      |        |
| BATSON HEAT  |               |           |        |      |        |
| TREAT        |               |           |        |      |        |
|              |               |           |        |      |        |
| TO CONFIRM   |               |           |        |      |        |
| THE STRENGTH |               |           |        |      |        |
| PROPERTIES   |               |           |        |      |        |
| OF THE       |               |           |        |      |        |
| CURRENT HEAT |               |           |        |      |        |
| TREATMENT OF |               |           |        |      |        |
|              |               |           |        |      |        |
| PRODUCTION   |               |           |        |      |        |
| HARDWARE     |               |           |        |      |        |
| (REFERENCE   |               |           |        |      |        |
| TASK II).    |               |           |        |      |        |
| TYPICAL CLIP |               |           |        |      |        |
| TENSILE      |               |           |        |      |        |
| SAMPLE       |               |           |        |      |        |
|              |               |           |        |      |        |
| 2219-62      |               |           |        |      |        |
| (BRITTAIN    |               |           |        |      |        |
| (BATSON HEAT |               |           |        |      |        |
| REQUIREMENTS |               |           |        |      |        |
| MACHINE)     |               |           |        |      |        |
| TREAT) YIELD |               |           |        |      |        |
|              |               |           |        |      |        |
| STRENGTH 36  |               |           |        |      |        |
| KSI MIN      |               |           |        |      |        |
| \-\-- 39 KSI |               |           |        |      |        |
| ULTIMATE     |               |           |        |      |        |
| STRENGTH 54  |               |           |        |      |        |
| KSI MIN      |               |           |        |      |        |
| \-\-- 56 KSI |               |           |        |      |        |
|              |               |           |        |      |        |
| HARDNESS     |               |           |        |      |        |
| (ROCKWELL)   |               |           |        |      |        |
| B-67 TYPICAL |               |           |        |      |        |
| B-53 - 63    |               |           |        |      |        |
| B-63         |               |           |        |      |        |
| CONDUCTIVITY |               |           |        |      |        |
| 30.5 -       |               |           |        |      |        |
|              |               |           |        |      |        |
| 33.5%        |               |           |        |      |        |
| TYPICAL 35 - |               |           |        |      |        |
| 37% 34.5%    |               |           |        |      |        |
| DURING       |               |           |        |      |        |
| I            |               |           |        |      |        |
| NVESTIGATION |               |           |        |      |        |
| OF THE       |               |           |        |      |        |
| CLIPS, TWO   |               |           |        |      |        |
|              |               |           |        |      |        |
| CLIPS WERE   |               |           |        |      |        |
| FOUND THAT   |               |           |        |      |        |
| HAD HARDNESS |               |           |        |      |        |
| AND          |               |           |        |      |        |
| CONDUCTIVITY |               |           |        |      |        |
| READINGS     |               |           |        |      |        |
|              |               |           |        |      |        |
| S            |               |           |        |      |        |
| IGNIFICANTLY |               |           |        |      |        |
| DIFFERENT    |               |           |        |      |        |
| FROM THE     |               |           |        |      |        |
| OTHERS. THE  |               |           |        |      |        |
| READINGS     |               |           |        |      |        |
| WERE SIMILAR |               |           |        |      |        |
| TO           |               |           |        |      |        |
|              |               |           |        |      |        |
| WHAT MIGHT   |               |           |        |      |        |
| BE TYPICAL   |               |           |        |      |        |
| FOR 2219-0.  |               |           |        |      |        |
| THE          |               |           |        |      |        |
| CHEMISTRY    |               |           |        |      |        |
| WAS VERIFIED |               |           |        |      |        |
| TO BE        |               |           |        |      |        |
|              |               |           |        |      |        |
| CORRECT FOR  |               |           |        |      |        |
| 2219. THE    |               |           |        |      |        |
| CLIPS WERE   |               |           |        |      |        |
| DRAWN FROM   |               |           |        |      |        |
| STOCK TO BE  |               |           |        |      |        |
| USED FOR     |               |           |        |      |        |
| TEST         |               |           |        |      |        |
|              |               |           |        |      |        |
| S            |               |           |        |      |        |
| ERIALIZATION |               |           |        |      |        |
| IS NOT       |               |           |        |      |        |
| REQUIRED AND |               |           |        |      |        |
| ID           |               |           |        |      |        |
| ENTIFICATION |               |           |        |      |        |
| ON THE       |               |           |        |      |        |
| SUPPLIER     |               |           |        |      |        |
| COULD        |               |           |        |      |        |
|              |               |           |        |      |        |
| NOT BE       |               |           |        |      |        |
| DETERMINED.  |               |           |        |      |        |
| 2219-0       |               |           |        |      |        |
| SUSPECT      |               |           |        |      |        |
| TYPICALS     |               |           |        |      |        |
| CLIP         |               |           |        |      |        |
| HARDNESS     |               |           |        |      |        |
| RH-70 RH-68  |               |           |        |      |        |
|              |               |           |        |      |        |
| CONDUCTIVITY |               |           |        |      |        |
| 48% 49%      |               |           |        |      |        |
| I            |               |           |        |      |        |
| NVESTIGATION |               |           |        |      |        |
| INTO THE     |               |           |        |      |        |
| PRODUCTION   |               |           |        |      |        |
| PROCESSES    |               |           |        |      |        |
|              |               |           |        |      |        |
| REVEALED     |               |           |        |      |        |
| THAT         |               |           |        |      |        |
| DIFFICULTIES |               |           |        |      |        |
| EXIST IN     |               |           |        |      |        |
| CONSISTENTLY |               |           |        |      |        |
| PRODUCING AN |               |           |        |      |        |
|              |               |           |        |      |        |
| ACCEPTABLE   |               |           |        |      |        |
| SPOT WELD.   |               |           |        |      |        |
| VIOLATIONS   |               |           |        |      |        |
| EXIST FOR    |               |           |        |      |        |
| UNDERFILL,   |               |           |        |      |        |
| BURN         |               |           |        |      |        |
| THROUGH,     |               |           |        |      |        |
|              |               |           |        |      |        |
| CRACKS,      |               |           |        |      |        |
| UNDERCUT AND |               |           |        |      |        |
| LACK OF      |               |           |        |      |        |
| FUSION.      |               |           |        |      |        |
| THESE        |               |           |        |      |        |
| VIOLATIONS,  |               |           |        |      |        |
| HOWEVER, ARE |               |           |        |      |        |
|              |               |           |        |      |        |
| SEEN AND     |               |           |        |      |        |
| CORRECTED AT |               |           |        |      |        |
| THE TIME THE |               |           |        |      |        |
| WELD IS      |               |           |        |      |        |
| MADE.REVIEW  |               |           |        |      |        |
| OF RECORDS   |               |           |        |      |        |
| SHOWS        |               |           |        |      |        |
|              |               |           |        |      |        |
| THAT THE     |               |           |        |      |        |
| CLIP IS      |               |           |        |      |        |
| CURRENTLY    |               |           |        |      |        |
| BEING MADE   |               |           |        |      |        |
| BY BRITTAIN  |               |           |        |      |        |
| MACHINE      |               |           |        |      |        |
| (HEAT TREAT  |               |           |        |      |        |
|              |               |           |        |      |        |
| BY BATSON)   |               |           |        |      |        |
| WITH         |               |           |        |      |        |
| PREVIOUS     |               |           |        |      |        |
| CONTRACTS    |               |           |        |      |        |
| WITH NEIL    |               |           |        |      |        |
| AIRCRAFT,    |               |           |        |      |        |
| VOUGHT AND   |               |           |        |      |        |
|              |               |           |        |      |        |
| MACHINE      |               |           |        |      |        |
| CRAFT. THIS  |               |           |        |      |        |
| IS A NON-    |               |           |        |      |        |
| SERIALIZED   |               |           |        |      |        |
| PART. TASK I |               |           |        |      |        |
| A. CLIP HEAT |               |           |        |      |        |
|              |               |           |        |      |        |
| TREAT - HEAT |               |           |        |      |        |
| TREAT A      |               |           |        |      |        |
| SAMPLE OF    |               |           |        |      |        |
| 2219-0 SHEET |               |           |        |      |        |
| TO T-62 PER  |               |           |        |      |        |
| MIL-H-6088,  |               |           |        |      |        |
|              |               |           |        |      |        |
| USING        |               |           |        |      |        |
| PRODUCTION   |               |           |        |      |        |
| FURNACES AND |               |           |        |      |        |
| METHODS AT   |               |           |        |      |        |
| BATSON HEAT  |               |           |        |      |        |
| TREATING.    |               |           |        |      |        |
| AFTER        |               |           |        |      |        |
|              |               |           |        |      |        |
| HEAT         |               |           |        |      |        |
| TREATING,    |               |           |        |      |        |
| TEST TO      |               |           |        |      |        |
| DETERMINE    |               |           |        |      |        |
| HARDNESS,    |               |           |        |      |        |
| CONDUCTIVITY |               |           |        |      |        |
| AND TENSILE  |               |           |        |      |        |
|              |               |           |        |      |        |
| STRENGTH.    |               |           |        |      |        |
| PRIOR TO     |               |           |        |      |        |
| HEAT         |               |           |        |      |        |
| TREATING,    |               |           |        |      |        |
| VERIFY       |               |           |        |      |        |
| CONDUCTIVITY |               |           |        |      |        |
| AND HARDNESS |               |           |        |      |        |
|              |               |           |        |      |        |
| TASK CLOSURE |               |           |        |      |        |
| STATEMENT A  |               |           |        |      |        |
| SAMPLE WAS   |               |           |        |      |        |
| HEAT TREATED |               |           |        |      |        |
| AND          |               |           |        |      |        |
| ANALYZED.    |               |           |        |      |        |
| HARDNESS     |               |           |        |      |        |
|              |               |           |        |      |        |
| AND          |               |           |        |      |        |
| CONDUCTIVITY |               |           |        |      |        |
| READINGS     |               |           |        |      |        |
| WERE WITHIN  |               |           |        |      |        |
| THE RANGE    |               |           |        |      |        |
| FOUND IN     |               |           |        |      |        |
| PRODUCTION   |               |           |        |      |        |
|              |               |           |        |      |        |
| CLIPS AND    |               |           |        |      |        |
| THE TENSILE  |               |           |        |      |        |
| SPECIMENS    |               |           |        |      |        |
| PULLED WITH  |               |           |        |      |        |
| STRENGTHS    |               |           |        |      |        |
| MEETING      |               |           |        |      |        |
| 2219-T62     |               |           |        |      |        |
|              |               |           |        |      |        |
| REQUIRE-     |               |           |        |      |        |
| MENTS.       |               |           |        |      |        |
| REFERENCE    |               |           |        |      |        |
| MATERIALS    |               |           |        |      |        |
| TEST REPORT  |               |           |        |      |        |
| NO.          |               |           |        |      |        |
| 86A049-B. B. |               |           |        |      |        |
| CLIP         |               |           |        |      |        |
|              |               |           |        |      |        |
| ANALYSIS     |               |           |        |      |        |
| (809149      |               |           |        |      |        |
| 00992-002) - |               |           |        |      |        |
| ENGINEERING  |               |           |        |      |        |
| PERFORM      |               |           |        |      |        |
| ANALYSIS TO  |               |           |        |      |        |
| DETERMINE    |               |           |        |      |        |
|              |               |           |        |      |        |
| THE ADEQUACY |               |           |        |      |        |
| OF A CLIP IF |               |           |        |      |        |
| ITS          |               |           |        |      |        |
| PROPERTIES   |               |           |        |      |        |
| SHOULD HAVE  |               |           |        |      |        |
| THE          |               |           |        |      |        |
| FOLLOWING    |               |           |        |      |        |
|              |               |           |        |      |        |
| STRENGTHS    |               |           |        |      |        |
| (AT ROOM     |               |           |        |      |        |
| T            |               |           |        |      |        |
| EMPERATURE). |               |           |        |      |        |
| CASE 1: 36.0 |               |           |        |      |        |
| KSI YIELD    |               |           |        |      |        |
| STRENGTH     |               |           |        |      |        |
| (2219        |               |           |        |      |        |
|              |               |           |        |      |        |
| T-62) 54.0   |               |           |        |      |        |
| KSI ULTIMATE |               |           |        |      |        |
| STRENGTH     |               |           |        |      |        |
| CASE 2: 16.0 |               |           |        |      |        |
| KSI YIELD    |               |           |        |      |        |
| STRENGTH     |               |           |        |      |        |
| (2219        |               |           |        |      |        |
|              |               |           |        |      |        |
| \- 0) 32.0   |               |           |        |      |        |
| KSI ULTIMATE |               |           |        |      |        |
| STRENGTH     |               |           |        |      |        |
| DETERMINE    |               |           |        |      |        |
| THE EFFECTS  |               |           |        |      |        |
| OF LOSS OF   |               |           |        |      |        |
| ONE          |               |           |        |      |        |
|              |               |           |        |      |        |
| CLIP ON THE  |               |           |        |      |        |
| SYSTEM       |               |           |        |      |        |
| (INTEGRITY   |               |           |        |      |        |
| OF WIRES AND |               |           |        |      |        |
| REMAINING    |               |           |        |      |        |
| CLIPS).      |               |           |        |      |        |
| CLOSURE      |               |           |        |      |        |
|              |               |           |        |      |        |
| STATEMENT    |               |           |        |      |        |
| ENGINEERING  |               |           |        |      |        |
| DETERMINED   |               |           |        |      |        |
| THE ADEQUACY |               |           |        |      |        |
| OF THE CLIPS |               |           |        |      |        |
| AS FOLLOWS:  |               |           |        |      |        |
|              |               |           |        |      |        |
| CASE 1: +    |               |           |        |      |        |
| .02 MS       |               |           |        |      |        |
| (YIELD)      |               |           |        |      |        |
| AND + 1.08   |               |           |        |      |        |
| MS (PLASTIC) |               |           |        |      |        |
| CASE 2: -    |               |           |        |      |        |
| .56 MS       |               |           |        |      |        |
|              |               |           |        |      |        |
| (YIELD)      |               |           |        |      |        |
| AND + .22 MS |               |           |        |      |        |
| (PLASTIC)    |               |           |        |      |        |
| ENGINEERING  |               |           |        |      |        |
| PERFORMED    |               |           |        |      |        |
| VIBRATIONAL  |               |           |        |      |        |
|              |               |           |        |      |        |
| TESTING. THE |               |           |        |      |        |
| TIG SPOT     |               |           |        |      |        |
| WELD CLIP    |               |           |        |      |        |
| PASSED THE   |               |           |        |      |        |
| Q            |               |           |        |      |        |
| UALIFICATION |               |           |        |      |        |
| R            |               |           |        |      |        |
| EQUIRE-MENTS |               |           |        |      |        |
|              |               |           |        |      |        |
| (180         |               |           |        |      |        |
| SECONDS) BUT |               |           |        |      |        |
| FAILED AT    |               |           |        |      |        |
| 240 SECONDS. |               |           |        |      |        |
| THE \"T\"    |               |           |        |      |        |
| STYLE CLIP   |               |           |        |      |        |
| WITH FILLET  |               |           |        |      |        |
|              |               |           |        |      |        |
| WELDS PASSED |               |           |        |      |        |
| 540 SECONDS  |               |           |        |      |        |
| AND SHOWED   |               |           |        |      |        |
| NO SIGN OF   |               |           |        |      |        |
| FAILURE.     |               |           |        |      |        |
| REFERENCE    |               |           |        |      |        |
|              |               |           |        |      |        |
| INTEROFFICE  |               |           |        |      |        |
| MEMORANDUM   |               |           |        |      |        |
| 3524-86-240. |               |           |        |      |        |
| RESULTS FROM |               |           |        |      |        |
| LIMITED      |               |           |        |      |        |
| TESTING      |               |           |        |      |        |
|              |               |           |        |      |        |
| INDICATE     |               |           |        |      |        |
| THAT THE     |               |           |        |      |        |
| LOSS OF ONE  |               |           |        |      |        |
| CLIP IN A    |               |           |        |      |        |
| SEQUENTIAL   |               |           |        |      |        |
| WIRE/CLIP    |               |           |        |      |        |
| ROUTING      |               |           |        |      |        |
|              |               |           |        |      |        |
| SYSTEM WOULD |               |           |        |      |        |
| NOT DEGRADE  |               |           |        |      |        |
| ITS          |               |           |        |      |        |
| INTEGRITY    |               |           |        |      |        |
| (REFERENCE   |               |           |        |      |        |
| INTEROFFICE  |               |           |        |      |        |
|              |               |           |        |      |        |
| MEMORANDUM   |               |           |        |      |        |
| 3            |               |           |        |      |        |
| 524-86-256). |               |           |        |      |        |
| C.           |               |           |        |      |        |
| NO           |               |           |        |      |        |
| NDESTRUCTIVE |               |           |        |      |        |
| TESTING FOR  |               |           |        |      |        |
| INSTALLED    |               |           |        |      |        |
| CLIPS        |               |           |        |      |        |
|              |               |           |        |      |        |
| \- DETERMINE |               |           |        |      |        |
| A METHOD(S)  |               |           |        |      |        |
| BY WHICH     |               |           |        |      |        |
| SPOT WELDED  |               |           |        |      |        |
| CLIPS CAN BE |               |           |        |      |        |
| VERIFIED FOR |               |           |        |      |        |
|              |               |           |        |      |        |
| INTEGRITY OF |               |           |        |      |        |
| WELD. THE    |               |           |        |      |        |
| PROPOSED NDE |               |           |        |      |        |
| METHOD(S)    |               |           |        |      |        |
| SHALL BE     |               |           |        |      |        |
| VERIFIED BY  |               |           |        |      |        |
|              |               |           |        |      |        |
| COMPARING    |               |           |        |      |        |
| NDE RESULTS  |               |           |        |      |        |
| AGAINST THE  |               |           |        |      |        |
| MEASURED     |               |           |        |      |        |
| PENETRATION  |               |           |        |      |        |
| AREA         |               |           |        |      |        |
| OBSERVED     |               |           |        |      |        |
|              |               |           |        |      |        |
| AFTER        |               |           |        |      |        |
| FRACTION.    |               |           |        |      |        |
| CLIPS FROM   |               |           |        |      |        |
| TASKS VI,    |               |           |        |      |        |
| VIII AND IX  |               |           |        |      |        |
| SHALL BE     |               |           |        |      |        |
| USED.        |               |           |        |      |        |
| CLOSURE      |               |           |        |      |        |
|              |               |           |        |      |        |
| STATEMENT    |               |           |        |      |        |
| ULTRASONIC   |               |           |        |      |        |
| NO           |               |           |        |      |        |
| NDESTRUCTIVE |               |           |        |      |        |
| TESTING      |               |           |        |      |        |
| UTILIZING A  |               |           |        |      |        |
| MODIFIED     |               |           |        |      |        |
|              |               |           |        |      |        |
| IMMERSION    |               |           |        |      |        |
| TECHNIQUE    |               |           |        |      |        |
| WAS          |               |           |        |      |        |
| UNSUCCESSFUL |               |           |        |      |        |
| IN           |               |           |        |      |        |
| DI           |               |           |        |      |        |
| SCRIMINATING |               |           |        |      |        |
| TIG SPOT     |               |           |        |      |        |
| WELDS        |               |           |        |      |        |
|              |               |           |        |      |        |
| WITH         |               |           |        |      |        |
| INADEQUATE   |               |           |        |      |        |
| FUSION       |               |           |        |      |        |
| AREAS.       |               |           |        |      |        |
| RESULTS      |               |           |        |      |        |
| UTILIZING    |               |           |        |      |        |
| RESISTIVITY  |               |           |        |      |        |
| MEA-         |               |           |        |      |        |
|              |               |           |        |      |        |
| SUREMENT     |               |           |        |      |        |
| (AT&T        |               |           |        |      |        |
| M            |               |           |        |      |        |
| ICROHMETER - |               |           |        |      |        |
| 100) ARE     |               |           |        |      |        |
| GOOD BASED   |               |           |        |      |        |
| UPON A       |               |           |        |      |        |
| SAMPLE OF    |               |           |        |      |        |
| EIGHT        |               |           |        |      |        |
|              |               |           |        |      |        |
| WELDS        |               |           |        |      |        |
| MEASURED     |               |           |        |      |        |
| THEN LAP/    |               |           |        |      |        |
| SHEAR TESTED |               |           |        |      |        |
| TO           |               |           |        |      |        |
| DESTRUCTION. |               |           |        |      |        |
| A LARGER     |               |           |        |      |        |
| SAMPLE       |               |           |        |      |        |
|              |               |           |        |      |        |
| BASE WOULD   |               |           |        |      |        |
| BE NECESSARY |               |           |        |      |        |
| FOR          |               |           |        |      |        |
| CONCLUSIVE   |               |           |        |      |        |
| EVALUATION   |               |           |        |      |        |
| (REFERENCE   |               |           |        |      |        |
|              |               |           |        |      |        |
| INTEROFFICE  |               |           |        |      |        |
| MEMORANDUM   |               |           |        |      |        |
| 3773-86-157. |               |           |        |      |        |
| D.           |               |           |        |      |        |
| IMPROVEMENTS |               |           |        |      |        |
| TO           |               |           |        |      |        |
| PRODUCTION   |               |           |        |      |        |
| SPOT         |               |           |        |      |        |
|              |               |           |        |      |        |
| WELD         |               |           |        |      |        |
| PROCESS -    |               |           |        |      |        |
| INVESTIGATE  |               |           |        |      |        |
| AND PROVIDE  |               |           |        |      |        |
| SUGGESTIONS  |               |           |        |      |        |
| FOR          |               |           |        |      |        |
| IMPROVEMENTS |               |           |        |      |        |
| TO           |               |           |        |      |        |
|              |               |           |        |      |        |
| THE SPOT     |               |           |        |      |        |
| WELDING      |               |           |        |      |        |
| OPERATION TO |               |           |        |      |        |
| REDUCE THE   |               |           |        |      |        |
| NUMBER OF    |               |           |        |      |        |
| DEFECTS      |               |           |        |      |        |
| (UNDERFILL,  |               |           |        |      |        |
|              |               |           |        |      |        |
| BURN         |               |           |        |      |        |
| THR          |               |           |        |      |        |
| OUGH,CRACKS, |               |           |        |      |        |
| UNDERCUT AND |               |           |        |      |        |
| LACK OF      |               |           |        |      |        |
| FUSION).     |               |           |        |      |        |
| CLOSURE      |               |           |        |      |        |
| STATEMENT IT |               |           |        |      |        |
|              |               |           |        |      |        |
| WAS          |               |           |        |      |        |
| DETERMINED   |               |           |        |      |        |
| THAT TIG     |               |           |        |      |        |
| SPOT WELDING |               |           |        |      |        |
| TECHNIQUES   |               |           |        |      |        |
| COULD NOT BE |               |           |        |      |        |
| IMPROVED     |               |           |        |      |        |
|              |               |           |        |      |        |
| UPON TO      |               |           |        |      |        |
| GUARANTEE    |               |           |        |      |        |
| CON-         |               |           |        |      |        |
| SISTENTLY    |               |           |        |      |        |
| GOOD SPOT    |               |           |        |      |        |
| WELDS. IT    |               |           |        |      |        |
| WAS          |               |           |        |      |        |
| SUGGESTED    |               |           |        |      |        |
| THAT         |               |           |        |      |        |
|              |               |           |        |      |        |
| FILLET       |               |           |        |      |        |
| WELDING BE   |               |           |        |      |        |
| SUBSTITUTED; |               |           |        |      |        |
| REFERENCE    |               |           |        |      |        |
| MEMORAN- DUM |               |           |        |      |        |
| 3614-86-274. |               |           |        |      |        |
| E            |               |           |        |      |        |
|              |               |           |        |      |        |
| TIG SPOT     |               |           |        |      |        |
| WELDING      |               |           |        |      |        |
| HARDWARE     |               |           |        |      |        |
| VE           |               |           |        |      |        |
| RIFICATION - |               |           |        |      |        |
| INSPECT THE  |               |           |        |      |        |
| WELD GUN AND |               |           |        |      |        |
|              |               |           |        |      |        |
| ASSOCIATED   |               |           |        |      |        |
| EQUIPMENT TO |               |           |        |      |        |
| DETERMINE IF |               |           |        |      |        |
| THERE ARE    |               |           |        |      |        |
| ANY          |               |           |        |      |        |
| DEFECTIVE OR |               |           |        |      |        |
|              |               |           |        |      |        |
| INADEQUATE   |               |           |        |      |        |
| COMPONENTS.  |               |           |        |      |        |
| DETERMINE IF |               |           |        |      |        |
| REPEATED     |               |           |        |      |        |
| USAGE, AS    |               |           |        |      |        |
| MIGHT BE     |               |           |        |      |        |
| SEEN IN      |               |           |        |      |        |
|              |               |           |        |      |        |
| PRODUCTION,  |               |           |        |      |        |
| CAN CAUSE A  |               |           |        |      |        |
| MALFUNCTION. |               |           |        |      |        |
| CLOSURE      |               |           |        |      |        |
| STATEMENT    |               |           |        |      |        |
| TESTING WAS  |               |           |        |      |        |
|              |               |           |        |      |        |
| PERFORMED    |               |           |        |      |        |
| MAKING 100   |               |           |        |      |        |
| TEST WELDS.  |               |           |        |      |        |
| OF THESE     |               |           |        |      |        |
| WELDS, THE   |               |           |        |      |        |
| MACHINE      |               |           |        |      |        |
| FUNCTIONED   |               |           |        |      |        |
|              |               |           |        |      |        |
| PROPERLY FOR |               |           |        |      |        |
| ALL EXCEPT   |               |           |        |      |        |
| ONE. THE ONE |               |           |        |      |        |
| MALFUNCTION  |               |           |        |      |        |
| COULD NOT BE |               |           |        |      |        |
|              |               |           |        |      |        |
| DUPLICATED   |               |           |        |      |        |
| OR ANALYZED, |               |           |        |      |        |
| BUT THE      |               |           |        |      |        |
| RESULTING    |               |           |        |      |        |
| WELD WAS     |               |           |        |      |        |
| VISUALLY     |               |           |        |      |        |
|              |               |           |        |      |        |
| UNACCEPTABLE |               |           |        |      |        |
| AND WOULD    |               |           |        |      |        |
| NOT HAVE     |               |           |        |      |        |
| RESULTED IN  |               |           |        |      |        |
| A LATENT     |               |           |        |      |        |
| DEFECT.      |               |           |        |      |        |
| REFERENCE    |               |           |        |      |        |
|              |               |           |        |      |        |
| MEMORANDUM   |               |           |        |      |        |
| 3            |               |           |        |      |        |
| 100-86-0953. |               |           |        |      |        |
| F. PROOF     |               |           |        |      |        |
| LOAD TEST -  |               |           |        |      |        |
| DEVELOP      |               |           |        |      |        |
| PROOF LOAD   |               |           |        |      |        |
|              |               |           |        |      |        |
| NECESSARY TO |               |           |        |      |        |
| LOAD THE     |               |           |        |      |        |
| CLIPS TO 100 |               |           |        |      |        |
| PERCENT      |               |           |        |      |        |
| LOAD. A      |               |           |        |      |        |
| MINIMUM OF   |               |           |        |      |        |
| 10 CLIPS     |               |           |        |      |        |
|              |               |           |        |      |        |
| SHALL BE     |               |           |        |      |        |
| WELDED TO    |               |           |        |      |        |
| PANELS.      |               |           |        |      |        |
| THESE SHALL  |               |           |        |      |        |
| BE WELDED IN |               |           |        |      |        |
| ATTITUDES    |               |           |        |      |        |
| SIMILAR      |               |           |        |      |        |
|              |               |           |        |      |        |
| TO THOSE     |               |           |        |      |        |
| USED IN      |               |           |        |      |        |
| STANDARD     |               |           |        |      |        |
| PRODUCTION   |               |           |        |      |        |
| PRACTICE.    |               |           |        |      |        |
| AFTER        |               |           |        |      |        |
| FABRICATION  |               |           |        |      |        |
| THEY         |               |           |        |      |        |
|              |               |           |        |      |        |
| SHALL BE     |               |           |        |      |        |
| USED FOR     |               |           |        |      |        |
| TASK IV      |               |           |        |      |        |
| INSPECTION.  |               |           |        |      |        |
| THE CLIPS    |               |           |        |      |        |
| SHALL THEN   |               |           |        |      |        |
| BE PULLED    |               |           |        |      |        |
|              |               |           |        |      |        |
| USING A 100  |               |           |        |      |        |
| PERCENT      |               |           |        |      |        |
| PROOF LOAD   |               |           |        |      |        |
| TO DETERMINE |               |           |        |      |        |
| ACCEPTABLE   |               |           |        |      |        |
| DEFORMATON   |               |           |        |      |        |
|              |               |           |        |      |        |
| CLOSURE      |               |           |        |      |        |
| STATEMENT    |               |           |        |      |        |
| TESTS WERE   |               |           |        |      |        |
| PERFORMED    |               |           |        |      |        |
| AND IT WAS   |               |           |        |      |        |
| DETERMINED   |               |           |        |      |        |
| THAT THE     |               |           |        |      |        |
|              |               |           |        |      |        |
| CLIPS START  |               |           |        |      |        |
| TO YIELD AT  |               |           |        |      |        |
| A            |               |           |        |      |        |
| PPROXIMATELY |               |           |        |      |        |
| 30           |               |           |        |      |        |
| POUND        |               |           |        |      |        |
| S.ANALYTICAL |               |           |        |      |        |
| RESULTS      |               |           |        |      |        |
|              |               |           |        |      |        |
| INDICATE     |               |           |        |      |        |
| THAT A 30    |               |           |        |      |        |
| POUND PULL   |               |           |        |      |        |
| TEST WOULD   |               |           |        |      |        |
| PROVIDE A    |               |           |        |      |        |
| PROOF FACTOR |               |           |        |      |        |
| OF           |               |           |        |      |        |
|              |               |           |        |      |        |
| A            |               |           |        |      |        |
| PPROXIMATELY |               |           |        |      |        |
| 1.0. THIS    |               |           |        |      |        |
| STATIC PROOF |               |           |        |      |        |
| LOAD,        |               |           |        |      |        |
| HOWEVER,     |               |           |        |      |        |
| DOES NOT     |               |           |        |      |        |
| GUARANTEE    |               |           |        |      |        |
|              |               |           |        |      |        |
| SPECIFIC     |               |           |        |      |        |
| CYCLE LIFE.  |               |           |        |      |        |
| A PROOF LOAD |               |           |        |      |        |
| BASED ON     |               |           |        |      |        |
| CYCLE LIFE   |               |           |        |      |        |
| CANNOT BE    |               |           |        |      |        |
|              |               |           |        |      |        |
| DETERMINED   |               |           |        |      |        |
| AT THIS      |               |           |        |      |        |
| TIME.        |               |           |        |      |        |
| REFERENCE    |               |           |        |      |        |
| INTEROFFICE  |               |           |        |      |        |
| MEMORANDUM   |               |           |        |      |        |
| 3521-86-074  |               |           |        |      |        |
|              |               |           |        |      |        |
| G. ANALYSIS  |               |           |        |      |        |
| OF TEST      |               |           |        |      |        |
| CLIPS -      |               |           |        |      |        |
| PERFORM      |               |           |        |      |        |
| M            |               |           |        |      |        |
| ETALLURGICAL |               |           |        |      |        |
| TESTING TO   |               |           |        |      |        |
| DETERMINE    |               |           |        |      |        |
|              |               |           |        |      |        |
| WELD         |               |           |        |      |        |
| GEOMETRY AND |               |           |        |      |        |
| FAILURE MODE |               |           |        |      |        |
| OF PULLED    |               |           |        |      |        |
| TIG SPOT     |               |           |        |      |        |
| WELD.        |               |           |        |      |        |
| CLOSURE      |               |           |        |      |        |
|              |               |           |        |      |        |
| STATEMENT    |               |           |        |      |        |
| CLIPS WITH   |               |           |        |      |        |
| BOTH NORMAL  |               |           |        |      |        |
| TIG SPOT     |               |           |        |      |        |
| WELDS AND    |               |           |        |      |        |
| WELDS WITH   |               |           |        |      |        |
| POOR         |               |           |        |      |        |
|              |               |           |        |      |        |
| FUSION WERE  |               |           |        |      |        |
| ANALYZED.    |               |           |        |      |        |
| SECTIONING   |               |           |        |      |        |
| THROUGH THE  |               |           |        |      |        |
| CENTER OF    |               |           |        |      |        |
| THE WELD,    |               |           |        |      |        |
| GOOD         |               |           |        |      |        |
|              |               |           |        |      |        |
| FUSION       |               |           |        |      |        |
| SHOWED       |               |           |        |      |        |
| NORMAL WELD  |               |           |        |      |        |
| SO           |               |           |        |      |        |
| LIDIFICATION |               |           |        |      |        |
| STRUCTURE,   |               |           |        |      |        |
| WHEREAS POOR |               |           |        |      |        |
|              |               |           |        |      |        |
| SHOWED ONLY  |               |           |        |      |        |
| HEAT ALTERED |               |           |        |      |        |
| MI           |               |           |        |      |        |
| CROSTRUCTURE |               |           |        |      |        |
| IN THE BASE  |               |           |        |      |        |
| METAL.       |               |           |        |      |        |
| REFERENCE    |               |           |        |      |        |
|              |               |           |        |      |        |
| LAB REPORT   |               |           |        |      |        |
| #86A195. H.  |               |           |        |      |        |
| CRYOGENIC    |               |           |        |      |        |
| TESTS - A    |               |           |        |      |        |
| MINIMUM OF   |               |           |        |      |        |
| 10 CLIPS     |               |           |        |      |        |
| SHALL BE     |               |           |        |      |        |
|              |               |           |        |      |        |
| WELDED TO    |               |           |        |      |        |
| PANELS.      |               |           |        |      |        |
| THESE SHALL  |               |           |        |      |        |
| BE WELDED IN |               |           |        |      |        |
| ATTITUDES    |               |           |        |      |        |
| SIMILAR TO   |               |           |        |      |        |
| THOSE        |               |           |        |      |        |
|              |               |           |        |      |        |
| USED IN      |               |           |        |      |        |
| STANDARD     |               |           |        |      |        |
| PRODUCTION   |               |           |        |      |        |
| PRACTICE.    |               |           |        |      |        |
| AFTER        |               |           |        |      |        |
| FABRICATION, |               |           |        |      |        |
| THEY SHALL   |               |           |        |      |        |
| BE           |               |           |        |      |        |
|              |               |           |        |      |        |
| USED FOR     |               |           |        |      |        |
| TASK IV      |               |           |        |      |        |
| INSPECTION.  |               |           |        |      |        |
| THE CLIPS    |               |           |        |      |        |
| SHALL THEN   |               |           |        |      |        |
| BE PULLED AT |               |           |        |      |        |
|              |               |           |        |      |        |
| CRYOGENIC    |               |           |        |      |        |
| TEMPERATURES |               |           |        |      |        |
| TO DETER-    |               |           |        |      |        |
| MINE THE     |               |           |        |      |        |
| STRENGTH OF  |               |           |        |      |        |
| THE WELDS    |               |           |        |      |        |
|              |               |           |        |      |        |
| CANCELLED I. |               |           |        |      |        |
| NDE TEST     |               |           |        |      |        |
| SPECIMENS -  |               |           |        |      |        |
| M            |               |           |        |      |        |
| ANUFACTURING |               |           |        |      |        |
| SHALL        |               |           |        |      |        |
| PRODUCE 100  |               |           |        |      |        |
|              |               |           |        |      |        |
| TENSILE      |               |           |        |      |        |
| SHEAR TEST   |               |           |        |      |        |
| SPECIMENS    |               |           |        |      |        |
| FOR USE IN   |               |           |        |      |        |
| DEVELOPMENT  |               |           |        |      |        |
| OF NDE       |               |           |        |      |        |
| TECHNIQUE    |               |           |        |      |        |
|              |               |           |        |      |        |
| FOR SPOT     |               |           |        |      |        |
| WELDS. THE   |               |           |        |      |        |
| SPECIMENS    |               |           |        |      |        |
| SHALL BE     |               |           |        |      |        |
| WELDED IN A  |               |           |        |      |        |
| WAY TO       |               |           |        |      |        |
| SIMULATE     |               |           |        |      |        |
|              |               |           |        |      |        |
| PRODUCTION   |               |           |        |      |        |
| CONDITIONS.  |               |           |        |      |        |
| EVERY EFFORT |               |           |        |      |        |
| SHALL BE     |               |           |        |      |        |
| MADE TO      |               |           |        |      |        |
| PRODUCE 25   |               |           |        |      |        |
| WELDS        |               |           |        |      |        |
|              |               |           |        |      |        |
| WITH ONLY    |               |           |        |      |        |
| PARTIAL      |               |           |        |      |        |
| FUSION       |               |           |        |      |        |
| (INCOMPLETE  |               |           |        |      |        |
| METAL TO     |               |           |        |      |        |
| METAL        |               |           |        |      |        |
| CONTACT).    |               |           |        |      |        |
| CLOSURE      |               |           |        |      |        |
|              |               |           |        |      |        |
| STATEMENT    |               |           |        |      |        |
| THE CLIPS    |               |           |        |      |        |
| WERE         |               |           |        |      |        |
| FABRICATED   |               |           |        |      |        |
| AND          |               |           |        |      |        |
| DELIVERED TO |               |           |        |      |        |
| RELIABILITY  |               |           |        |      |        |
|              |               |           |        |      |        |
| ASSURANCE.   |               |           |        |      |        |
| REFERENCE    |               |           |        |      |        |
| RTM 1275.    |               |           |        |      |        |
| CLOSURE      |               |           |        |      |        |
| STATEMENT    |               |           |        |      |        |
| CLIPS WERE   |               |           |        |      |        |
| WELDED AND   |               |           |        |      |        |
|              |               |           |        |      |        |
| PULL TESTED. |               |           |        |      |        |
| CURRENT      |               |           |        |      |        |
| PRODUCTION   |               |           |        |      |        |
| CLIPS THAT   |               |           |        |      |        |
| WERE FILLET  |               |           |        |      |        |
| WELDED       |               |           |        |      |        |
| PULLED       |               |           |        |      |        |
|              |               |           |        |      |        |
| FROM 120 TO  |               |           |        |      |        |
| 172 LBS. THE |               |           |        |      |        |
| FILLET       |               |           |        |      |        |
| WELDED \"T\" |               |           |        |      |        |
| CLIPS PULLED |               |           |        |      |        |
| FROM 1,300   |               |           |        |      |        |
| LBS          |               |           |        |      |        |
|              |               |           |        |      |        |
| TO 1,700     |               |           |        |      |        |
| LBS. AND     |               |           |        |      |        |
| READINGS     |               |           |        |      |        |
| WERE FROM    |               |           |        |      |        |
| 450 TO 490   |               |           |        |      |        |
| LBS. WHEN    |               |           |        |      |        |
| STRESSED IN  |               |           |        |      |        |
|              |               |           |        |      |        |
| BENDING      |               |           |        |      |        |
| (REFERENCE   |               |           |        |      |        |
| MECHANICAL   |               |           |        |      |        |
| PROPERTIES   |               |           |        |      |        |
| REPORT TEST  |               |           |        |      |        |
| NO. 86A255   |               |           |        |      |        |
| AND          |               |           |        |      |        |
|              |               |           |        |      |        |
| 86A273).     |               |           |        |      |        |
| 6/19/86 PRB  |               |           |        |      |        |
| STATUS -     |               |           |        |      |        |
| PROBLEM      |               |           |        |      |        |
| RESULTED     |               |           |        |      |        |
| FROM A       |               |           |        |      |        |
| DEFECTIVE    |               |           |        |      |        |
|              |               |           |        |      |        |
| SPOTWELD.    |               |           |        |      |        |
| MMC IS       |               |           |        |      |        |
| I            |               |           |        |      |        |
| NVESTIGATING |               |           |        |      |        |
| A NON-       |               |           |        |      |        |
| DESTRUCTIVE  |               |           |        |      |        |
| INSPECTION   |               |           |        |      |        |
| METHOD       |               |           |        |      |        |
|              |               |           |        |      |        |
| (ULTRASONIC) |               |           |        |      |        |
| FOR          |               |           |        |      |        |
| DETECTING    |               |           |        |      |        |
| DEFECTIVE    |               |           |        |      |        |
| SPOTWELDS.   |               |           |        |      |        |
| ECD IS       |               |           |        |      |        |
| UNDETERMINED |               |           |        |      |        |
|              |               |           |        |      |        |
| 7/15/86 PRB  |               |           |        |      |        |
| STATUS -     |               |           |        |      |        |
| PRELIMINARY  |               |           |        |      |        |
| ANALYSIS     |               |           |        |      |        |
| INDICATES    |               |           |        |      |        |
| THAT THE     |               |           |        |      |        |
| CLIPS MAY    |               |           |        |      |        |
|              |               |           |        |      |        |
| EXPERIENCE   |               |           |        |      |        |
| SOME         |               |           |        |      |        |
| YIELDING BUT |               |           |        |      |        |
| NOT AN       |               |           |        |      |        |
| ACTUAL       |               |           |        |      |        |
| FRACTURE.    |               |           |        |      |        |
| LOSS OF ONE  |               |           |        |      |        |
| OR TWO       |               |           |        |      |        |
|              |               |           |        |      |        |
| WELDS ON ONE |               |           |        |      |        |
| CLIP HAS NOT |               |           |        |      |        |
| BEEN TESTED. |               |           |        |      |        |
| PULL TESTS   |               |           |        |      |        |
| WERE         |               |           |        |      |        |
| PROPOSED TO  |               |           |        |      |        |
| BE           |               |           |        |      |        |
|              |               |           |        |      |        |
| CONDUCTED.   |               |           |        |      |        |
| MMC          |               |           |        |      |        |
| MANAGEMENT   |               |           |        |      |        |
| DOES NOT     |               |           |        |      |        |
| AGREE ON     |               |           |        |      |        |
| THIS TYPE    |               |           |        |      |        |
| TESTING      |               |           |        |      |        |
|              |               |           |        |      |        |
| C            |               |           |        |      |        |
| ONSIDERATION |               |           |        |      |        |
| IS BEING     |               |           |        |      |        |
| GIVEN TO     |               |           |        |      |        |
| CHANGING THE |               |           |        |      |        |
| WELD TO A    |               |           |        |      |        |
| FILLET TYPE  |               |           |        |      |        |
|              |               |           |        |      |        |
| WELD.        |               |           |        |      |        |
| 8/21/86 PRB  |               |           |        |      |        |
| STATUS -     |               |           |        |      |        |
| PERFORMING   |               |           |        |      |        |
| VIBRA        |               |           |        |      |        |
| TION/TENSILE |               |           |        |      |        |
| TESTING.     |               |           |        |      |        |
| SHOULD       |               |           |        |      |        |
|              |               |           |        |      |        |
| BE FINISHED  |               |           |        |      |        |
| BY           |               |           |        |      |        |
| MI           |               |           |        |      |        |
| D-SEPTEMBER. |               |           |        |      |        |
| 9/18/86 PRB  |               |           |        |      |        |
| STATUS -     |               |           |        |      |        |
| CLIPS TO BE  |               |           |        |      |        |
| FILLET       |               |           |        |      |        |
|              |               |           |        |      |        |
| (FUSION)     |               |           |        |      |        |
| WELDED       |               |           |        |      |        |
| INSTEAD OF   |               |           |        |      |        |
| SPOT WELDED. |               |           |        |      |        |
| 10/16/86 PRB |               |           |        |      |        |
| STATUS - NO  |               |           |        |      |        |
|              |               |           |        |      |        |
| CHANGE. ECD  |               |           |        |      |        |
| IS 1-30-87   |               |           |        |      |        |
| AT MMC.      |               |           |        |      |        |
| 11/24/86 PRB |               |           |        |      |        |
| STATUS - NEW |               |           |        |      |        |
| FILLET       |               |           |        |      |        |
| WELDED       |               |           |        |      |        |
|              |               |           |        |      |        |
| T-CLIP       |               |           |        |      |        |
| ENGINEERING  |               |           |        |      |        |
| DETAIL       |               |           |        |      |        |
| DRAWINGS ARE |               |           |        |      |        |
| COMPLETE AND |               |           |        |      |        |
| ARE IN THE   |               |           |        |      |        |
| APPROVAL     |               |           |        |      |        |
|              |               |           |        |      |        |
| CYCLE.       |               |           |        |      |        |
| INSTALLATION |               |           |        |      |        |
| DRAWING IS   |               |           |        |      |        |
| IN WORK. ECD |               |           |        |      |        |
| REMAINS      |               |           |        |      |        |
| 1-30-87.     |               |           |        |      |        |
| 4/31/87 -    |               |           |        |      |        |
|              |               |           |        |      |        |
| UPDATE -     |               |           |        |      |        |
| TASK         |               |           |        |      |        |
| REOPENED TO  |               |           |        |      |        |
| REDESIGN AND |               |           |        |      |        |
| TEST NEW     |               |           |        |      |        |
| NARROW \"T\" |               |           |        |      |        |
| CLIP (A      |               |           |        |      |        |
|              |               |           |        |      |        |
| RESULT OF    |               |           |        |      |        |
| UNDERCUT     |               |           |        |      |        |
| CONDITION    |               |           |        |      |        |
| DISCOVERED   |               |           |        |      |        |
| ON           |               |           |        |      |        |
| VALIDATION   |               |           |        |      |        |
| ARTICLES).   |               |           |        |      |        |
| ECD          |               |           |        |      |        |
|              |               |           |        |      |        |
| 6/5/87       |               |           |        |      |        |
| 5/28/87 -    |               |           |        |      |        |
| PRB STATUS - |               |           |        |      |        |
| NO CHANGE    |               |           |        |      |        |
| 9/28/87      |               |           |        |      |        |
| CLOSURE      |               |           |        |      |        |
| UPDATE (REF  |               |           |        |      |        |
|              |               |           |        |      |        |
| CAPS S-069C) |               |           |        |      |        |
| TASK II      |               |           |        |      |        |
| CORRECTIVE   |               |           |        |      |        |
| ACTION A.    |               |           |        |      |        |
| NEW CLIP -   |               |           |        |      |        |
| ENGINEERING  |               |           |        |      |        |
| 1            |               |           |        |      |        |
|              |               |           |        |      |        |
| ENGINEERING  |               |           |        |      |        |
| SHALL        |               |           |        |      |        |
| INCORPORATE  |               |           |        |      |        |
| A NEW CLIP   |               |           |        |      |        |
| DESIGN,      |               |           |        |      |        |
| \"T\"        |               |           |        |      |        |
| CR           |               |           |        |      |        |
| OSS-SECTION, |               |           |        |      |        |
|              |               |           |        |      |        |
| WITH FILLET  |               |           |        |      |        |
| WELD. MAKE   |               |           |        |      |        |
| ALL DRAWING  |               |           |        |      |        |
| CHANGES      |               |           |        |      |        |
| NECESSARY AT |               |           |        |      |        |
| THE DETAIL   |               |           |        |      |        |
| AND          |               |           |        |      |        |
|              |               |           |        |      |        |
| INSTALLATION |               |           |        |      |        |
| LEVELS.      |               |           |        |      |        |
| NOTE: THIS   |               |           |        |      |        |
| CHANGE WILL  |               |           |        |      |        |
| INCLUD THE   |               |           |        |      |        |
| CLIPS ON THE |               |           |        |      |        |
| LH2          |               |           |        |      |        |
|              |               |           |        |      |        |
| FORWARD DOME |               |           |        |      |        |
| (2 CLIPS)    |               |           |        |      |        |
| AND L02 DOME |               |           |        |      |        |
| (2 CLIPS),   |               |           |        |      |        |
| AS WELL AS   |               |           |        |      |        |
| THE LH2 AFT  |               |           |        |      |        |
|              |               |           |        |      |        |
| DOME (24     |               |           |        |      |        |
| CLIPS).      |               |           |        |      |        |
| CLOSURE      |               |           |        |      |        |
| STATEMENT    |               |           |        |      |        |
| NEW CLIPS    |               |           |        |      |        |
| WERE         |               |           |        |      |        |
| DESIGNED     |               |           |        |      |        |
| HAVING A     |               |           |        |      |        |
| \"T\"        |               |           |        |      |        |
|              |               |           |        |      |        |
| C            |               |           |        |      |        |
| ONFIGURATION |               |           |        |      |        |
| WITH A       |               |           |        |      |        |
| NARROW BASE  |               |           |        |      |        |
| TO MINIMIZE  |               |           |        |      |        |
| THE AFFECTS  |               |           |        |      |        |
| OF HEAT      |               |           |        |      |        |
| INPUT        |               |           |        |      |        |
|              |               |           |        |      |        |
| DURING       |               |           |        |      |        |
| FILLET       |               |           |        |      |        |
| WELDING      |               |           |        |      |        |
| (REFERENCE   |               |           |        |      |        |
| INTEROFFICE  |               |           |        |      |        |
| MEMORANDUM   |               |           |        |      |        |
| FROM D. KIRK |               |           |        |      |        |
| TO           |               |           |        |      |        |
|              |               |           |        |      |        |
| C. VOLGEL,   |               |           |        |      |        |
| DATED        |               |           |        |      |        |
| 6/16/87. 2.  |               |           |        |      |        |
| P            |               |           |        |      |        |
| REPRODUCTION |               |           |        |      |        |
| EFFORTS ON   |               |           |        |      |        |
| THE NARROW   |               |           |        |      |        |
| BASE         |               |           |        |      |        |
|              |               |           |        |      |        |
| \"T\" CLIP   |               |           |        |      |        |
| WITH FILLET  |               |           |        |      |        |
| WELD SHOWED  |               |           |        |      |        |
| A PROBLEM    |               |           |        |      |        |
| WHERE THE    |               |           |        |      |        |
| HEAT         |               |           |        |      |        |
| AFFECTED     |               |           |        |      |        |
| ZONE         |               |           |        |      |        |
|              |               |           |        |      |        |
| APPROACHED   |               |           |        |      |        |
| THE EDGE OF  |               |           |        |      |        |
| THE PRIMARY  |               |           |        |      |        |
| WELD LAND AS |               |           |        |      |        |
| THE CLIP WAS |               |           |        |      |        |
|              |               |           |        |      |        |
| REPOSITIONED |               |           |        |      |        |
| FOR BETTER   |               |           |        |      |        |
| CLEARANCE TO |               |           |        |      |        |
| THE PRIMARY  |               |           |        |      |        |
| WELD BEAD.   |               |           |        |      |        |
| MODIFY THE   |               |           |        |      |        |
|              |               |           |        |      |        |
| DIMENSIONS   |               |           |        |      |        |
| ON THE CLIP  |               |           |        |      |        |
| AND REDEFINE |               |           |        |      |        |
| POSITIONING  |               |           |        |      |        |
| OF THE CLIP  |               |           |        |      |        |
| FOR PROPER   |               |           |        |      |        |
|              |               |           |        |      |        |
| CLEARANCES.  |               |           |        |      |        |
| CONDUCT      |               |           |        |      |        |
| TESTS TO     |               |           |        |      |        |
| DETERMINE    |               |           |        |      |        |
| THE ADEQUACY |               |           |        |      |        |
| OF CON- TROL |               |           |        |      |        |
| OVER         |               |           |        |      |        |
|              |               |           |        |      |        |
| THE HEAT     |               |           |        |      |        |
| AFFECTED     |               |           |        |      |        |
| ZONE ON THE  |               |           |        |      |        |
| PRIMARY WELD |               |           |        |      |        |
| LAND.        |               |           |        |      |        |
| CLOSURE      |               |           |        |      |        |
| STATEMENT    |               |           |        |      |        |
|              |               |           |        |      |        |
| CLIPS WITH   |               |           |        |      |        |
| 0.4\" X      |               |           |        |      |        |
| 1.0\" BASE   |               |           |        |      |        |
| WERE USED. A |               |           |        |      |        |
| 0.45\"       |               |           |        |      |        |
| OFFSET IN    |               |           |        |      |        |
| RELATION TO  |               |           |        |      |        |
|              |               |           |        |      |        |
| THE GORE     |               |           |        |      |        |
| WELD WAS     |               |           |        |      |        |
| ESTA-        |               |           |        |      |        |
| BLISHED AS   |               |           |        |      |        |
| OPTIMUM; AND |               |           |        |      |        |
| AN INCREASE  |               |           |        |      |        |
| OF WELD      |               |           |        |      |        |
|              |               |           |        |      |        |
| LAND WIDTH   |               |           |        |      |        |
| TO 1.8\" WAS |               |           |        |      |        |
| RECOMMENDED. |               |           |        |      |        |
| REFERENCE    |               |           |        |      |        |
| REPORT NO.   |               |           |        |      |        |
| 3690-87-117  |               |           |        |      |        |
|              |               |           |        |      |        |
| 3\. INITIATE |               |           |        |      |        |
| A CHANGE     |               |           |        |      |        |
| SUMMARY      |               |           |        |      |        |
| (J31024,     |               |           |        |      |        |
| SUP. \"A\")  |               |           |        |      |        |
| TO IMPLEMENT |               |           |        |      |        |
| FOR          |               |           |        |      |        |
|              |               |           |        |      |        |
| PRODUCTION   |               |           |        |      |        |
| THE NEW      |               |           |        |      |        |
| \"T\" CLIP   |               |           |        |      |        |
| DESIGN AND   |               |           |        |      |        |
| I            |               |           |        |      |        |
| NSTALLATION, |               |           |        |      |        |
| AND TO       |               |           |        |      |        |
| IMPLEMENT    |               |           |        |      |        |
|              |               |           |        |      |        |
| AN INCREASE  |               |           |        |      |        |
| IN GORE      |               |           |        |      |        |
| PANEL WELD   |               |           |        |      |        |
| LAND WIDTH   |               |           |        |      |        |
| ON WELD      |               |           |        |      |        |
| LANDS WHERE  |               |           |        |      |        |
| CLIPS ARE    |               |           |        |      |        |
|              |               |           |        |      |        |
| INSTALLED.   |               |           |        |      |        |
| PRODUCTION   |               |           |        |      |        |
| IM           |               |           |        |      |        |
| PLEMENTATION |               |           |        |      |        |
| TO BE        |               |           |        |      |        |
| SCHEDULED    |               |           |        |      |        |
| FOR LWT-54   |               |           |        |      |        |
|              |               |           |        |      |        |
| CLOSURE      |               |           |        |      |        |
| STATEMENT    |               |           |        |      |        |
| CHANGE       |               |           |        |      |        |
| SUMMARY WAS  |               |           |        |      |        |
| INITIATED    |               |           |        |      |        |
| AND          |               |           |        |      |        |
| APPROVED.    |               |           |        |      |        |
| REFERENCE    |               |           |        |      |        |
|              |               |           |        |      |        |
| J31024,      |               |           |        |      |        |
| SUPP. A. B.  |               |           |        |      |        |
| EVALUATION   |               |           |        |      |        |
| OF AS BUILT  |               |           |        |      |        |
| C            |               |           |        |      |        |
| ONFIGURAITON |               |           |        |      |        |
| FOR POSSIBLE |               |           |        |      |        |
|              |               |           |        |      |        |
| RETROFIT 1.  |               |           |        |      |        |
| ENGINEERING  |               |           |        |      |        |
| SHALL        |               |           |        |      |        |
| EVALUATE THE |               |           |        |      |        |
| CURRENT      |               |           |        |      |        |
| C            |               |           |        |      |        |
| ONFIGURATION |               |           |        |      |        |
| (SPOT        |               |           |        |      |        |
|              |               |           |        |      |        |
| WELDED       |               |           |        |      |        |
| CLIPS) TO    |               |           |        |      |        |
| DETERMINE    |               |           |        |      |        |
| THE NEED FOR |               |           |        |      |        |
| RETROFIT AND |               |           |        |      |        |
| PROVIDE      |               |           |        |      |        |
| POSSIBLE     |               |           |        |      |        |
|              |               |           |        |      |        |
| RETROFIT     |               |           |        |      |        |
| PLAN.        |               |           |        |      |        |
| CLOSURE      |               |           |        |      |        |
| STATEMENT A  |               |           |        |      |        |
| FLEET        |               |           |        |      |        |
| RETROFIT HAS |               |           |        |      |        |
| BEEN DEFINED |               |           |        |      |        |
| FOR          |               |           |        |      |        |
|              |               |           |        |      |        |
| LWTS 16, 20, |               |           |        |      |        |
| 21, 22, AND  |               |           |        |      |        |
| 24 THROUGH   |               |           |        |      |        |
| 46. THE      |               |           |        |      |        |
| EXIST- ING   |               |           |        |      |        |
| CLIPS SHALL  |               |           |        |      |        |
|              |               |           |        |      |        |
| RECEIVE      |               |           |        |      |        |
| R            |               |           |        |      |        |
| EINFORCEMENT |               |           |        |      |        |
| FROM SCRIM   |               |           |        |      |        |
| CLOTH BONDED |               |           |        |      |        |
| OVER THE     |               |           |        |      |        |
| FEET OF EACH |               |           |        |      |        |
|              |               |           |        |      |        |
| CLIP         |               |           |        |      |        |
| (REFERENCE   |               |           |        |      |        |
| CHANGE       |               |           |        |      |        |
| SUMMARY B0   |               |           |        |      |        |
| 1783). 2.    |               |           |        |      |        |
| INITIATE A   |               |           |        |      |        |
| REVISION TO  |               |           |        |      |        |
| B0           |               |           |        |      |        |
|              |               |           |        |      |        |
| 1783 TO      |               |           |        |      |        |
| CHANGE THE   |               |           |        |      |        |
| E            |               |           |        |      |        |
| FFECTIVITIES |               |           |        |      |        |
| COVERED BY   |               |           |        |      |        |
| THE RETROFIT |               |           |        |      |        |
| TO BE LWT\'S |               |           |        |      |        |
|              |               |           |        |      |        |
| 16, 20, 21,  |               |           |        |      |        |
| 22, AND 24   |               |           |        |      |        |
| THROUGH 53.  |               |           |        |      |        |
| CLOSURE      |               |           |        |      |        |
| STATEMENT    |               |           |        |      |        |
| REVISION WAS |               |           |        |      |        |
| MADE         |               |           |        |      |        |
|              |               |           |        |      |        |
| TO B0 1783   |               |           |        |      |        |
| TO EXTEND    |               |           |        |      |        |
| THE RETROFIT |               |           |        |      |        |
| OUT TO       |               |           |        |      |        |
| LWT-53       |               |           |        |      |        |
| (REFERENCE   |               |           |        |      |        |
| B0 1783,     |               |           |        |      |        |
|              |               |           |        |      |        |
| SUP. \"A\"). |               |           |        |      |        |
| TASK III     |               |           |        |      |        |
| CLEARANCE OF |               |           |        |      |        |
| E            |               |           |        |      |        |
| FFECTIVITIES |               |           |        |      |        |
| LWTS 16, 20, |               |           |        |      |        |
| 21, 22, AND  |               |           |        |      |        |
|              |               |           |        |      |        |
| 24 THROUGH   |               |           |        |      |        |
| 53 NO        |               |           |        |      |        |
| CONSTRAINTS. |               |           |        |      |        |
| CHANGE       |               |           |        |      |        |
| SUMMARY B0   |               |           |        |      |        |
| 1783, SUP.   |               |           |        |      |        |
| \"A\", SHALL |               |           |        |      |        |
|              |               |           |        |      |        |
| RETROFIT THE |               |           |        |      |        |
| TANKS WITH   |               |           |        |      |        |
| SCRIM CLOTH  |               |           |        |      |        |
| REIN-        |               |           |        |      |        |
| FORCEMENT    |               |           |        |      |        |
| BONDED TO    |               |           |        |      |        |
| THE BASE     |               |           |        |      |        |
|              |               |           |        |      |        |
| OF EACH      |               |           |        |      |        |
| CLIP. MOD    |               |           |        |      |        |
| KITS SHALL   |               |           |        |      |        |
| COVER LWTS   |               |           |        |      |        |
| 16, 20, 21,  |               |           |        |      |        |
| 22, AND 24   |               |           |        |      |        |
|              |               |           |        |      |        |
| 3 40.        |               |           |        |      |        |
| IN-LINE      |               |           |        |      |        |
| PLANNING     |               |           |        |      |        |
| (OUT OF      |               |           |        |      |        |
| POSITION     |               |           |        |      |        |
| LOGS) SHAL   |               |           |        |      |        |
| COVER LWTS   |               |           |        |      |        |
| 41           |               |           |        |      |        |
|              |               |           |        |      |        |
| THROUGH 53.  |               |           |        |      |        |
| LWT-5        |               |           |        |      |        |
| 4/SUBSEQUENT |               |           |        |      |        |
| A NEW \"T\"  |               |           |        |      |        |
| SECTION CLIP |               |           |        |      |        |
| WITH FILLET  |               |           |        |      |        |
| WELD         |               |           |        |      |        |
|              |               |           |        |      |        |
| SHALL BE     |               |           |        |      |        |
| INCORPORATED |               |           |        |      |        |
| INTO         |               |           |        |      |        |
| PRODUCTION.  |               |           |        |      |        |
| PRODUCTION   |               |           |        |      |        |
| SHALL NO     |               |           |        |      |        |
| LONGER USE A |               |           |        |      |        |
|              |               |           |        |      |        |
| TIG SPOT     |               |           |        |      |        |
| WELD IN ANY  |               |           |        |      |        |
| APPLICATION  |               |           |        |      |        |
| (REFERENCE   |               |           |        |      |        |
| CHANGE       |               |           |        |      |        |
| SUMMARY      |               |           |        |      |        |
| J31024, SUP  |               |           |        |      |        |
|              |               |           |        |      |        |
| \"A\"). TASK |               |           |        |      |        |
| IV           |               |           |        |      |        |
| CAUS         |               |           |        |      |        |
| E/CORRECTIVE |               |           |        |      |        |
| ACTION       |               |           |        |      |        |
| SUMMARY FOUR |               |           |        |      |        |
| CLIPS WERE   |               |           |        |      |        |
| FOUND        |               |           |        |      |        |
|              |               |           |        |      |        |
| PARTIALLY    |               |           |        |      |        |
| SEVERED FROM |               |           |        |      |        |
| THEIR        |               |           |        |      |        |
| SUBSTRATE;   |               |           |        |      |        |
| IN EACH      |               |           |        |      |        |
| CASE, THE    |               |           |        |      |        |
| TIG SPOT     |               |           |        |      |        |
| WELD         |               |           |        |      |        |
|              |               |           |        |      |        |
| WAS          |               |           |        |      |        |
| FRACTURED ON |               |           |        |      |        |
| ONE LEG OF   |               |           |        |      |        |
| THE CLIP,    |               |           |        |      |        |
| LEAVING THE  |               |           |        |      |        |
| OTHER LEG TO |               |           |        |      |        |
| HOLD THE     |               |           |        |      |        |
|              |               |           |        |      |        |
| CLIP. IN     |               |           |        |      |        |
| EACH CASE,   |               |           |        |      |        |
| THE BROKEN   |               |           |        |      |        |
| WELD HAD     |               |           |        |      |        |
| INSUFFICIENT |               |           |        |      |        |
| AREA OF      |               |           |        |      |        |
|              |               |           |        |      |        |
| PENETRATION, |               |           |        |      |        |
| A            |               |           |        |      |        |
| PPROXIMATELY |               |           |        |      |        |
| 20% OF       |               |           |        |      |        |
| NORMAL AREA. |               |           |        |      |        |
| THE REDUCED  |               |           |        |      |        |
| AREA WAS     |               |           |        |      |        |
|              |               |           |        |      |        |
| CAUSED BY    |               |           |        |      |        |
| RANDOM       |               |           |        |      |        |
| PRODUCTION   |               |           |        |      |        |
| VARIATION    |               |           |        |      |        |
| DUE TO THE   |               |           |        |      |        |
| DIFFICULTY   |               |           |        |      |        |
| OF THE       |               |           |        |      |        |
|              |               |           |        |      |        |
| OPERATION.   |               |           |        |      |        |
| INSPECTION   |               |           |        |      |        |
| (NDE) OF THE |               |           |        |      |        |
| COMPLETED    |               |           |        |      |        |
| WELD FOR     |               |           |        |      |        |
| AREA OF      |               |           |        |      |        |
|              |               |           |        |      |        |
| PENETRATION  |               |           |        |      |        |
| IS NOT       |               |           |        |      |        |
| POSSIBLE.    |               |           |        |      |        |
| THE OUTER    |               |           |        |      |        |
| WELD NUGGET  |               |           |        |      |        |
| HAD ALL THE  |               |           |        |      |        |
|              |               |           |        |      |        |
| APPEARANCES  |               |           |        |      |        |
| OF A NORMAL  |               |           |        |      |        |
| WELD FOR ALL |               |           |        |      |        |
| FOUR CLIPS   |               |           |        |      |        |
| MENTIONED    |               |           |        |      |        |
| ABOVE        |               |           |        |      |        |
|              |               |           |        |      |        |
| CORRECTIVE   |               |           |        |      |        |
| ACTION WAS   |               |           |        |      |        |
| TAKEN BY     |               |           |        |      |        |
| INITIATING A |               |           |        |      |        |
| COMPLETE     |               |           |        |      |        |
| RETROFIT FOR |               |           |        |      |        |
| THE          |               |           |        |      |        |
|              |               |           |        |      |        |
| FLEET. ALL   |               |           |        |      |        |
| LH2 AFT DOME |               |           |        |      |        |
| CLIPS SHALL  |               |           |        |      |        |
| BE BONDED    |               |           |        |      |        |
| WITH SCRIM   |               |           |        |      |        |
| CLOTH LAID   |               |           |        |      |        |
|              |               |           |        |      |        |
| OVER THE     |               |           |        |      |        |
| EXISTING     |               |           |        |      |        |
| CLIP. THE    |               |           |        |      |        |
| BONDED CLIP  |               |           |        |      |        |
| WAS TESTED   |               |           |        |      |        |
| BOTH         |               |           |        |      |        |
| STATICALLY   |               |           |        |      |        |
| AND          |               |           |        |      |        |
|              |               |           |        |      |        |
| DYNAMICALLY  |               |           |        |      |        |
| AND VERIFIED |               |           |        |      |        |
| TO BE        |               |           |        |      |        |
| ADEQUATE     |               |           |        |      |        |
| EVEN WITHOUT |               |           |        |      |        |
| THE SUPPORT  |               |           |        |      |        |
| OF A         |               |           |        |      |        |
|              |               |           |        |      |        |
| WELD. CLIPS  |               |           |        |      |        |
| SHALL        |               |           |        |      |        |
| RECEIVE      |               |           |        |      |        |
| BONDING      |               |           |        |      |        |
| R            |               |           |        |      |        |
| EINFORCEMENT |               |           |        |      |        |
| UP THROUGH   |               |           |        |      |        |
| LWT-53,      |               |           |        |      |        |
|              |               |           |        |      |        |
| LWT-54 AND   |               |           |        |      |        |
| UP SHALL     |               |           |        |      |        |
| HAVE A       |               |           |        |      |        |
| REDESIGNED   |               |           |        |      |        |
| CLIP. THE    |               |           |        |      |        |
| NEW CLIP     |               |           |        |      |        |
| SHALL BE A   |               |           |        |      |        |
|              |               |           |        |      |        |
| FILLET       |               |           |        |      |        |
| WELDED \"T\" |               |           |        |      |        |
| CONFIGURED   |               |           |        |      |        |
| CLIP. THE    |               |           |        |      |        |
| FUSION OF    |               |           |        |      |        |
| THE FILLET   |               |           |        |      |        |
| WELD IS      |               |           |        |      |        |
|              |               |           |        |      |        |
| VERIFIABLE   |               |           |        |      |        |
| BY SIGHT.    |               |           |        |      |        |
| STATIC AND   |               |           |        |      |        |
| DYNAMIC      |               |           |        |      |        |
| TESTS WERE   |               |           |        |      |        |
| PERFORMED,   |               |           |        |      |        |
| AND THE      |               |           |        |      |        |
|              |               |           |        |      |        |
| \"T\" CLIP   |               |           |        |      |        |
| FAR EXCEEDED |               |           |        |      |        |
| ITS          |               |           |        |      |        |
| R            |               |           |        |      |        |
| EQUIREMENTS. |               |           |        |      |        |
| THE 24       |               |           |        |      |        |
| CLIPS, ON    |               |           |        |      |        |
| THE LH2 AFT  |               |           |        |      |        |
|              |               |           |        |      |        |
| DOME,        |               |           |        |      |        |
| SUPPORT      |               |           |        |      |        |
| WIRING FOR   |               |           |        |      |        |
| THE FOUR LH2 |               |           |        |      |        |
| DEPLETION    |               |           |        |      |        |
| SENSORS.     |               |           |        |      |        |
| BECAUSE OF   |               |           |        |      |        |
| THE          |               |           |        |      |        |
|              |               |           |        |      |        |
| POTENTIAL    |               |           |        |      |        |
| FOR          |               |           |        |      |        |
| CATASTROPHIC |               |           |        |      |        |
| FAILURE,     |               |           |        |      |        |
| THIS SYSTEM  |               |           |        |      |        |
| IS CLASSED   |               |           |        |      |        |
| AS           |               |           |        |      |        |
|              |               |           |        |      |        |
| CR           |               |           |        |      |        |
| ITICALITY 1. |               |           |        |      |        |
| THE          |               |           |        |      |        |
| CORRECTIVE   |               |           |        |      |        |
| ACTION TAKEN |               |           |        |      |        |
| TO ASSURE    |               |           |        |      |        |
| THE          |               |           |        |      |        |
| INTEGRITY OF |               |           |        |      |        |
|              |               |           |        |      |        |
| THIS SYTEM   |               |           |        |      |        |
| WAS          |               |           |        |      |        |
| CONSISTENT   |               |           |        |      |        |
| WITH ITS     |               |           |        |      |        |
| CRITICALITY  |               |           |        |      |        |
| 1 CLASSI-    |               |           |        |      |        |
| FICATION.    |               |           |        |      |        |
| THIS         |               |           |        |      |        |
|              |               |           |        |      |        |
| PROBLEM IS   |               |           |        |      |        |
| SUBMITTED TO |               |           |        |      |        |
| MSFC FOR     |               |           |        |      |        |
| CLOSURE      |               |           |        |      |        |
| REVIEW AND   |               |           |        |      |        |
| APPROVAL     |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **MSFC       |               |           |        |      |        |
| Response/C   |               |           |        |      |        |
| oncurrence** |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+

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

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

  ----------------- --------------- --------------------- ----------- ----------- ------------
  **MSFC Report#**\ **IFA#**\       **Contractor RPT#**\  **JSC#**\   **KSC#**\   **EICN#**\
  A10051            \--             S-069                 \--         \--         \--

  **Asmnt Part#**\  **Asmnt Part    **Asmnt                                       
  80914900992-002   Name**\         Serial/Lot#**\                                
                    LH2 TANK CLIP   N/A                                           

  **HCRIT CD**\     **FCRIT CD**\   **CAUSE CD**\         **FAIL                  
  \--               1               DHV - DES-HDW-VIBR    MODE**\                 
                                                          MS - STRUCT             

  **Asmnt FMEA**\   **Asmnt FM**\   **FMEA CSE**\         **FMEA                  
  3.6.2.1           1               D                     SCSE**\                 
                                                          1                       

  **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**                                                                          
  ----------------- --------------- --------------------- ----------- ----------- ------------