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

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

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

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

+--------------+---------------+-----------+--------+------+--------+
| **MSFC       | **In-Flight   | **C       | **J    | *    |        |
| Record \#**\ | Anomaly       | ontractor | SC#**\ | *KSC |        |
| A15743       | Number**\     | Report    | \--    | #**\ |        |
|              | \--           | Number**\ |        | \--  |        |
|              |               | P-070     |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **Problem    |               |           |        |      |        |
| Title**\     |               |           |        |      |        |
| LO2 FEEDLINE |               |           |        |      |        |
| JOINT 2      |               |           |        |      |        |
| LEAKAGE      |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **EICN#**\   | **ELEMENT**\  | **Cont    | **FS   | **   |        |
| \--          | ET            | ractor**\ | CM#**\ | FCRI |        |
|              |               | MMMSS     | \--    | T**\ |        |
|              |               |           |        | 1    |        |
+--------------+---------------+-----------+--------+------+--------+
| **HCRIT**\   | **Sys_Lvl**\  | **Misc    |        |      |        |
| \--          | N             | Codes**\  |        |      |        |
|              |               | A B C D E |        |      |        |
|              |               | F G H I J |        |      |        |
|              |               | K L M N O |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| *            | **NO          | *         | *      | *    |        |
| *HARDWARE**\ | MENCLATURE**\ | *PART#**\ | *SER/L | *MAN |        |
| EIM          | \--           | \--       | OT#**\ | UFAC |        |
|              |               |           | \--    | TURE |        |
|              |               |           |        | R**\ |        |
|              |               |           |        | \--  |        |
+--------------+---------------+-----------+--------+------+--------+
| *            | **NO          | *         | *      | *    |        |
| *HARDWARE**\ | MENCLATURE**\ | *PART#**\ | *SER/L | *MAN |        |
| LRU          | \--           | \--       | OT#**\ | UFAC |        |
|              |               |           | \--    | TURE |        |
|              |               |           |        | R**\ |        |
|              |               |           |        | \--  |        |
+--------------+---------------+-----------+--------+------+--------+
| *            | **NO          | *         | *      | *    |        |
| *HARDWARE**\ | MENCLATURE**\ | *PART#**\ | *SER/L | *MAN |        |
| NCA          | EXTERNAL TANK | 809010    | OT#**\ | UFAC |        |
|              |               | 06000-059 | NA     | TURE |        |
|              |               |           |        | R**\ |        |
|              |               |           |        | MAF  |        |
+--------------+---------------+-----------+--------+------+--------+
| **Test/      | **Prevailing  | **F /     | **Fail | **   |        |
| Operation**\ | Condtion**\   | U**\      | M      | Caus |        |
| A - ATP      | F -           | F         | ode**\ | e**\ |        |
|              | FUNCTIONAL    |           | MV -   | M    |        |
|              |               |           | EXT    | AW - |        |
|              |               |           | LEAK   | MFG- |        |
|              |               |           |        | ASY- |        |
|              |               |           |        | WORK |        |
+--------------+---------------+-----------+--------+------+--------+
| **System**\  | **Defect**\   | **Ma      | **Work | **   |        |
| PROPULSION   | MA - ME ADJ   | terial**\ | Cont   | Fail |        |
|              |               | P - SEAL  | act**\ | Dat  |        |
|              |               |           | D.     | e**\ |        |
|              |               |           | O      | 12   |        |
|              |               |           | \'NEAL | /20/ |        |
|              |               |           |        | 1993 |        |
+--------------+---------------+-----------+--------+------+--------+
| **Received   | **Date        | **FMEA    | **IFA: | *    |        |
| at MSFC**\   | Isolated**\   | Ref       | M      | *Mis |        |
| 12/23/1993   | 03/19/1993    | erence**\ | ission | sion |        |
|              |               | 2.1.14.1  | Ph     | Ela  |        |
|              |               |           | ase**\ | psed |        |
|              |               |           | \--    | Tim  |        |
|              |               |           |        | e**\ |        |
|              |               |           |        | \--  |        |
+--------------+---------------+-----------+--------+------+--------+
| *            |               | **S       |        | **   |        |
| *Location**\ |               | ymptom**\ |        | Time |        |
| MAF          |               | MV - EXT  |        | Cycl |        |
|              |               | LEAK      |        | e**\ |        |
|              |               |           |        | \--  |        |
+--------------+---------------+-----------+--------+------+--------+
| *            |               |           |        |      |        |
| *Effectivity |               |           |        |      |        |
| Text**\      |               |           |        |      |        |
| \--          |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **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**\      | 01/31/1994    |           | Act    |      |        |
| 01/04/1994   |               |           | ion**\ |      |        |
|              |               |           | 01/3   |      |        |
|              |               |           | 1/1994 |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **I          |               |           |        |      |        |
| nvestigation |               |           |        |      |        |
| / Resolution |               |           |        |      |        |
| Summary**    |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **Last MSFC  | **CN RSLV     | **Defer   | **Add  | *    |        |
| Update**\    | SBMT**\       | Date**\   | D      | *R/C |        |
| 04/12/1994   | 02/01/1994    | 0         | ate**\ | Code |        |
|              |               | 1/13/1994 | 12/2   | s**\ |        |
|              |               |           | 3/1993 | 5 -  |        |
|              |               |           |        | TRNG |        |
|              |               |           |        | \--  |        |
|              |               |           |        | \--  |        |
+--------------+---------------+-----------+--------+------+--------+
| **Assignee** |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **Design**\  | **Chief       | **S &     | **Proj | *    |        |
| W. PATTERSON | Engineer**\   | MA**\     | ect**\ | *Pro |        |
|              | M. PESSIN     | R.        | \--    | ject |        |
|              |               | JACKSON   |        | MG   |        |
|              |               |           |        | R**\ |        |
|              |               |           |        | P.   |        |
|              |               |           |        | CO   |        |
|              |               |           |        | UNTS |        |
+--------------+---------------+-----------+--------+------+--------+
| **Approval** |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **Design**\  | **Chief       | **S &     | **Proj | *    |        |
| W. PATTERSON | Engineer**\   | MA**\     | ect**\ | *Pro |        |
|              | M. PESSIN     | R.        | \--    | ject |        |
|              |               | JACKSON   |        | MG   |        |
|              |               |           |        | R**\ |        |
|              |               |           |        | P.   |        |
|              |               |           |        | CO   |        |
|              |               |           |        | UNTS |        |
+--------------+---------------+-----------+--------+------+--------+
| **PAC        | **PAC Review  | **MSFC    | **Sta  | *    |        |
| Assignee**\  | Complete**\   | Closure   | tus**\ | *F/A |        |
| B. HURST     | BH            | Date**\   | C -    | C    |        |
|              |               | 0         | CLOSED | ompl |        |
|              |               | 2/14/1994 |        | 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** |               |           |        |      |        |
|              |               |           |        |      |        |
| THE LO2      |               |           |        |      |        |
| FEEDLINE     |               |           |        |      |        |
| JOINT 2      |               |           |        |      |        |
| LEAKED AT 90 |               |           |        |      |        |
| SCCM AND     |               |           |        |      |        |
| EXCEEDED THE |               |           |        |      |        |
|              |               |           |        |      |        |
| ALLOWABLE    |               |           |        |      |        |
| LEAKAGE RATE |               |           |        |      |        |
| OF 2.7 SCCM  |               |           |        |      |        |
| PER          |               |           |        |      |        |
| TP-8C101-FA  |               |           |        |      |        |
|              |               |           |        |      |        |
| CRITICALITY: |               |           |        |      |        |
| PARA.        |               |           |        |      |        |
| 2.1.14.1     |               |           |        |      |        |
| REFLECTS     |               |           |        |      |        |
| SEAL LEAKAGE |               |           |        |      |        |
| AS A FAILURE |               |           |        |      |        |
| MODE         |               |           |        |      |        |
|              |               |           |        |      |        |
| WHICH MAY    |               |           |        |      |        |
| RESULT IN    |               |           |        |      |        |
| LOSS OF      |               |           |        |      |        |
| MISSION      |               |           |        |      |        |
|              |               |           |        |      |        |
| REV \"A\",   |               |           |        |      |        |
| REVISES      |               |           |        |      |        |
| GENERAL,     |               |           |        |      |        |
| TASKS I, II, |               |           |        |      |        |
| III, AND IV  |               |           |        |      |        |
| (SEE         |               |           |        |      |        |
| ASTERISKS)   |               |           |        |      |        |
| AND          |               |           |        |      |        |
|              |               |           |        |      |        |
| CLOSES CAPS  |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **Contractor |               |           |        |      |        |
| In           |               |           |        |      |        |
| vestigation/ |               |           |        |      |        |
| Resolution** |               |           |        |      |        |
|              |               |           |        |      |        |
| \* GENERAL:  |               |           |        |      |        |
|              |               |           |        |      |        |
| DURING THE   |               |           |        |      |        |
| DUAL SEAL    |               |           |        |      |        |
| CAVITY LEAK  |               |           |        |      |        |
| CHECK OF     |               |           |        |      |        |
| JOINT 2 (LO2 |               |           |        |      |        |
| FWD FLEX     |               |           |        |      |        |
| ASSY         |               |           |        |      |        |
|              |               |           |        |      |        |
| TO LO2 FWD   |               |           |        |      |        |
| ELBOW), A 90 |               |           |        |      |        |
| SCCM LEAK    |               |           |        |      |        |
| WAS          |               |           |        |      |        |
| DETECTED.    |               |           |        |      |        |
| THE          |               |           |        |      |        |
| ALLOWABLE    |               |           |        |      |        |
| LEAKAGE      |               |           |        |      |        |
|              |               |           |        |      |        |
| IS 2.7 SCCM  |               |           |        |      |        |
| MAXIMUM AT   |               |           |        |      |        |
| 50.0 +/-.5   |               |           |        |      |        |
| PSIG GHE, AS |               |           |        |      |        |
| TESTED PER   |               |           |        |      |        |
| TP-8C101-FA  |               |           |        |      |        |
|              |               |           |        |      |        |
| TROUBLE      |               |           |        |      |        |
| SHOOTING     |               |           |        |      |        |
| STEPS        |               |           |        |      |        |
| DETECTED NO  |               |           |        |      |        |
| TEST         |               |           |        |      |        |
| EQUIPMENT    |               |           |        |      |        |
| MALFUNCTION  |               |           |        |      |        |
| AND          |               |           |        |      |        |
|              |               |           |        |      |        |
| VERIFIED     |               |           |        |      |        |
| THAT THE     |               |           |        |      |        |
| LEAKAGE WAS  |               |           |        |      |        |
| ISOLATED TO  |               |           |        |      |        |
| THE PRIMARY  |               |           |        |      |        |
| SEAL. UPON   |               |           |        |      |        |
|              |               |           |        |      |        |
| JOINT        |               |           |        |      |        |
| DISASSEMBLY  |               |           |        |      |        |
| DAMAGE TO    |               |           |        |      |        |
| THE RACO     |               |           |        |      |        |
| SEAL         |               |           |        |      |        |
| (PRIMARY     |               |           |        |      |        |
| SEAL) WAS    |               |           |        |      |        |
| FOUND        |               |           |        |      |        |
|              |               |           |        |      |        |
| WHICH SHOWED |               |           |        |      |        |
| THE SEAL WAS |               |           |        |      |        |
| MISALIGNED   |               |           |        |      |        |
| DURING       |               |           |        |      |        |
| I            |               |           |        |      |        |
| NSTALLATION. |               |           |        |      |        |
| NO DAMAGE    |               |           |        |      |        |
|              |               |           |        |      |        |
| WAS FOUND ON |               |           |        |      |        |
| EITHER       |               |           |        |      |        |
| FLANGE       |               |           |        |      |        |
| SURFACE      |               |           |        |      |        |
|              |               |           |        |      |        |
| THE          |               |           |        |      |        |
| FEEDLINES    |               |           |        |      |        |
| ARE          |               |           |        |      |        |
| MANUFACTURED |               |           |        |      |        |
| BY ARROWHEAD |               |           |        |      |        |
| PRODUCTS.    |               |           |        |      |        |
| THE FORWARD  |               |           |        |      |        |
| FLEX         |               |           |        |      |        |
|              |               |           |        |      |        |
| ASSEMBLY IS  |               |           |        |      |        |
| IDENTIFIED   |               |           |        |      |        |
| AS A         |               |           |        |      |        |
| P            |               |           |        |      |        |
| D4800175-099 |               |           |        |      |        |
| AND THE      |               |           |        |      |        |
| FORWARD      |               |           |        |      |        |
| ELBOW IS     |               |           |        |      |        |
|              |               |           |        |      |        |
| IDENTIFIED   |               |           |        |      |        |
| AS A         |               |           |        |      |        |
| PD           |               |           |        |      |        |
| 4800175-089. |               |           |        |      |        |
| THE RACO     |               |           |        |      |        |
| SEAL WAS     |               |           |        |      |        |
| MANUFACTURED |               |           |        |      |        |
| BY           |               |           |        |      |        |
|              |               |           |        |      |        |
| FLUOROCARBON |               |           |        |      |        |
| AND IS       |               |           |        |      |        |
| IDENTIFIED   |               |           |        |      |        |
| AS A 55L2-5  |               |           |        |      |        |
| SEAL         |               |           |        |      |        |
|              |               |           |        |      |        |
| TASK I.      |               |           |        |      |        |
| PRO          |               |           |        |      |        |
| BLEM/FAILURE |               |           |        |      |        |
| I            |               |           |        |      |        |
| NVESTIGATION |               |           |        |      |        |
|              |               |           |        |      |        |
| REVIEW       |               |           |        |      |        |
| ASSEMBLY     |               |           |        |      |        |
| PROCEDURES   |               |           |        |      |        |
| AND          |               |           |        |      |        |
| FLANGE/SEAL  |               |           |        |      |        |
| CO           |               |           |        |      |        |
| NFIGURATIONS |               |           |        |      |        |
| FOR FACTORS  |               |           |        |      |        |
|              |               |           |        |      |        |
| WHICH WOULD  |               |           |        |      |        |
| HAVE         |               |           |        |      |        |
| CONTRIBUTED  |               |           |        |      |        |
| TO THE SEAL  |               |           |        |      |        |
| MISALIGNMENT |               |           |        |      |        |
| DURING       |               |           |        |      |        |
|              |               |           |        |      |        |
| INSTALLATION |               |           |        |      |        |
|              |               |           |        |      |        |
| RES          |               |           |        |      |        |
| PONSIBILITY: |               |           |        |      |        |
| D.           |               |           |        |      |        |
| O\'NEAL/3741 |               |           |        |      |        |
| \-- D.       |               |           |        |      |        |
| W            |               |           |        |      |        |
| ESTPHAL/3740 |               |           |        |      |        |
|              |               |           |        |      |        |
| COMPLETED    |               |           |        |      |        |
| 01/04/94     |               |           |        |      |        |
|              |               |           |        |      |        |
| \* CLOSURE   |               |           |        |      |        |
| STATEMENT    |               |           |        |      |        |
|              |               |           |        |      |        |
| THE          |               |           |        |      |        |
| ORIENTATION  |               |           |        |      |        |
| OF THIS      |               |           |        |      |        |
| JOINT DURING |               |           |        |      |        |
| ASSEMBLY IS  |               |           |        |      |        |
| SUCH THAT    |               |           |        |      |        |
| THE          |               |           |        |      |        |
|              |               |           |        |      |        |
| FLANGES ARE  |               |           |        |      |        |
| HORIZONTAL,  |               |           |        |      |        |
| THE UPPER    |               |           |        |      |        |
| FLANGE (LO2  |               |           |        |      |        |
| FORWARD      |               |           |        |      |        |
| ELBOW)       |               |           |        |      |        |
|              |               |           |        |      |        |
| CONTAINING   |               |           |        |      |        |
| BOTH THE     |               |           |        |      |        |
| PRIMARY      |               |           |        |      |        |
| (RACO) AND   |               |           |        |      |        |
| SECONDARY    |               |           |        |      |        |
| (CREAVY)     |               |           |        |      |        |
| SEALS IN     |               |           |        |      |        |
|              |               |           |        |      |        |
| GROOVES,     |               |           |        |      |        |
| WHICH IS     |               |           |        |      |        |
| LOWERED ONTO |               |           |        |      |        |
| THE SMOOTH   |               |           |        |      |        |
| FLANGE OF    |               |           |        |      |        |
| THE LO2      |               |           |        |      |        |
| FORWARD      |               |           |        |      |        |
|              |               |           |        |      |        |
| FLEX         |               |           |        |      |        |
| ASSEMBLY.    |               |           |        |      |        |
| DUE TO THIS  |               |           |        |      |        |
| ORIENTATION  |               |           |        |      |        |
| ACLAR STRIPS |               |           |        |      |        |
| ARE USED TO  |               |           |        |      |        |
|              |               |           |        |      |        |
| ENSURE       |               |           |        |      |        |
| RETENTION OF |               |           |        |      |        |
| THE SEALS IN |               |           |        |      |        |
| THEIR        |               |           |        |      |        |
| GROOVES      |               |           |        |      |        |
| UNTIL        |               |           |        |      |        |
| IMMEDIATELY  |               |           |        |      |        |
|              |               |           |        |      |        |
| PRIOR TO     |               |           |        |      |        |
| FLANGE MATE  |               |           |        |      |        |
| WHERE THE    |               |           |        |      |        |
| STRIPS ARE   |               |           |        |      |        |
| REMOVED AND  |               |           |        |      |        |
| THE FLANGES  |               |           |        |      |        |
|              |               |           |        |      |        |
| ARE ALLOWED  |               |           |        |      |        |
| TO CONTACT.  |               |           |        |      |        |
| DISCUSSIONS  |               |           |        |      |        |
| WITH THE     |               |           |        |      |        |
| PERSONNEL    |               |           |        |      |        |
| THAT         |               |           |        |      |        |
|              |               |           |        |      |        |
| PERFORMED    |               |           |        |      |        |
| THIS         |               |           |        |      |        |
| PARTICULAR   |               |           |        |      |        |
| ASSEMBLY     |               |           |        |      |        |
| NOTED THAT   |               |           |        |      |        |
| THIS RACO    |               |           |        |      |        |
| SEAL         |               |           |        |      |        |
|              |               |           |        |      |        |
| TENDED TO    |               |           |        |      |        |
| SLIP FROM    |               |           |        |      |        |
| ITS GROOVE,  |               |           |        |      |        |
| UNUSUAL AS   |               |           |        |      |        |
| NORMALLY     |               |           |        |      |        |
| THERE IS     |               |           |        |      |        |
| ENOUGH       |               |           |        |      |        |
|              |               |           |        |      |        |
| OF AN        |               |           |        |      |        |
| INTERFERENCE |               |           |        |      |        |
| FOR TO THE   |               |           |        |      |        |
| GROOVE FOR   |               |           |        |      |        |
| THE SEAL TO  |               |           |        |      |        |
| RETAIN       |               |           |        |      |        |
| ITSELF       |               |           |        |      |        |
|              |               |           |        |      |        |
| BOTH THE     |               |           |        |      |        |
| RACO SEAL    |               |           |        |      |        |
| AND THE      |               |           |        |      |        |
| GROOVE OUTER |               |           |        |      |        |
| DIAMETER     |               |           |        |      |        |
| REQUIREMENTS |               |           |        |      |        |
| ARE          |               |           |        |      |        |
|              |               |           |        |      |        |
| THE SAME,    |               |           |        |      |        |
| 17.805 +/-   |               |           |        |      |        |
| .005 INCHES. |               |           |        |      |        |
| NOTE THAT    |               |           |        |      |        |
| THE          |               |           |        |      |        |
| TOLERANCES   |               |           |        |      |        |
| WOULD        |               |           |        |      |        |
|              |               |           |        |      |        |
| ALLOW THE    |               |           |        |      |        |
| LOOSE SEAL   |               |           |        |      |        |
| CONDITION    |               |           |        |      |        |
| REPORTED     |               |           |        |      |        |
| DURING       |               |           |        |      |        |
| ASSEMBLY     |               |           |        |      |        |
|              |               |           |        |      |        |
| A REVIEW OF  |               |           |        |      |        |
| THE DATA     |               |           |        |      |        |
| PACK FOR THE |               |           |        |      |        |
| FORWARD      |               |           |        |      |        |
| ELBOW SHOWED |               |           |        |      |        |
| THE          |               |           |        |      |        |
|              |               |           |        |      |        |
| DIMENSIONAL  |               |           |        |      |        |
| REQUIREMENT  |               |           |        |      |        |
| FOR THE      |               |           |        |      |        |
| FLANGE SEAL  |               |           |        |      |        |
| GROOVE       |               |           |        |      |        |
| DIAMETER TO  |               |           |        |      |        |
| BE           |               |           |        |      |        |
|              |               |           |        |      |        |
| ACCEPTABLE   |               |           |        |      |        |
| PER A        |               |           |        |      |        |
| DISCRETE     |               |           |        |      |        |
| VERIFICATION |               |           |        |      |        |
| DURING FINAL |               |           |        |      |        |
| INSPECTION.  |               |           |        |      |        |
| THE          |               |           |        |      |        |
|              |               |           |        |      |        |
| SEAL         |               |           |        |      |        |
| DIAMETER IS  |               |           |        |      |        |
| VERIFIED AT  |               |           |        |      |        |
| THE SUPPLIER |               |           |        |      |        |
| BY FIT       |               |           |        |      |        |
| CHECKING TO  |               |           |        |      |        |
| FIXED        |               |           |        |      |        |
|              |               |           |        |      |        |
| TOOLING. NO  |               |           |        |      |        |
| POST-REMOVAL |               |           |        |      |        |
| DIMENSIONAL  |               |           |        |      |        |
| INSPECTION   |               |           |        |      |        |
| OF THE SEAL  |               |           |        |      |        |
| WAS          |               |           |        |      |        |
|              |               |           |        |      |        |
| POSSIBLE DUE |               |           |        |      |        |
| TO ITS       |               |           |        |      |        |
| DAMAGED      |               |           |        |      |        |
| CONDITION    |               |           |        |      |        |
|              |               |           |        |      |        |
| \* CAUSE     |               |           |        |      |        |
|              |               |           |        |      |        |
| PRIMARY SEAL |               |           |        |      |        |
| DAMAGED      |               |           |        |      |        |
| DURING       |               |           |        |      |        |
| INSTALLATION |               |           |        |      |        |
|              |               |           |        |      |        |
| \* TASK II.  |               |           |        |      |        |
| CORRECTIVE   |               |           |        |      |        |
| ACTION       |               |           |        |      |        |
|              |               |           |        |      |        |
| PRODUCTION   |               |           |        |      |        |
| OPERATIONS   |               |           |        |      |        |
| AND QUALITY  |               |           |        |      |        |
| CONTROL      |               |           |        |      |        |
| PERSONNEL    |               |           |        |      |        |
| HAVE BEEN    |               |           |        |      |        |
| MADE         |               |           |        |      |        |
|              |               |           |        |      |        |
| AWARE OF THE |               |           |        |      |        |
| INSTALLATION |               |           |        |      |        |
| ERROR AND    |               |           |        |      |        |
| CAUTIONED TO |               |           |        |      |        |
| USE EXTREME  |               |           |        |      |        |
| CARE TO      |               |           |        |      |        |
|              |               |           |        |      |        |
| ASSURE       |               |           |        |      |        |
| PROPER SEAL  |               |           |        |      |        |
| ALIGNMENT    |               |           |        |      |        |
| PRIOR TO     |               |           |        |      |        |
| FLANGE MATE. |               |           |        |      |        |
| REFERENCE    |               |           |        |      |        |
|              |               |           |        |      |        |
| IOM          |               |           |        |      |        |
| 3725-94-05   |               |           |        |      |        |
|              |               |           |        |      |        |
| NO OTHER     |               |           |        |      |        |
| CORRECTIVE   |               |           |        |      |        |
| ACTION IS    |               |           |        |      |        |
| NECESSARY.   |               |           |        |      |        |
| THIS TEST    |               |           |        |      |        |
| FAILURE IS   |               |           |        |      |        |
|              |               |           |        |      |        |
| ISOLATED, A  |               |           |        |      |        |
| DIRECT       |               |           |        |      |        |
| RESULT OF A  |               |           |        |      |        |
| DAMAGED      |               |           |        |      |        |
| PRIMARY SEAL |               |           |        |      |        |
| CAUSED BY    |               |           |        |      |        |
|              |               |           |        |      |        |
| IMPROPER     |               |           |        |      |        |
| ALIGNMENT    |               |           |        |      |        |
| DURING JOINT |               |           |        |      |        |
| ASSEMBLY     |               |           |        |      |        |
|              |               |           |        |      |        |
| \* TASK III. |               |           |        |      |        |
| FLEET        |               |           |        |      |        |
| CLEARANCE    |               |           |        |      |        |
|              |               |           |        |      |        |
| ET-71 JOINT  |               |           |        |      |        |
| NUMBER 2     |               |           |        |      |        |
| ASSEMBLY     |               |           |        |      |        |
| SUCCESSFULLY |               |           |        |      |        |
| REWORKED AND |               |           |        |      |        |
| RETESTED     |               |           |        |      |        |
|              |               |           |        |      |        |
| ALL OTHER    |               |           |        |      |        |
| JOINTS       |               |           |        |      |        |
| SUCCESSFULLY |               |           |        |      |        |
| COMPLETED    |               |           |        |      |        |
| LEAK TESTS   |               |           |        |      |        |
|              |               |           |        |      |        |
| ALL OTHER    |               |           |        |      |        |
| ETS CLEARED  |               |           |        |      |        |
| BASED ON     |               |           |        |      |        |
| SUCCESSFULLY |               |           |        |      |        |
| COMPLETING   |               |           |        |      |        |
| LEAK TESTS   |               |           |        |      |        |
|              |               |           |        |      |        |
| \* TASK IV.  |               |           |        |      |        |
| CAPS CLOSURE |               |           |        |      |        |
| SUMMARY      |               |           |        |      |        |
|              |               |           |        |      |        |
| THE LEAK     |               |           |        |      |        |
| DETECTED     |               |           |        |      |        |
| DURING       |               |           |        |      |        |
| ACCEPTANCE   |               |           |        |      |        |
| TESTING OF   |               |           |        |      |        |
| THE LO2      |               |           |        |      |        |
| FEEDLINE     |               |           |        |      |        |
|              |               |           |        |      |        |
| JOINT        |               |           |        |      |        |
| OCCURRED AS  |               |           |        |      |        |
| A RESULT OF  |               |           |        |      |        |
| A MISALIGNED |               |           |        |      |        |
| SEAL WHICH   |               |           |        |      |        |
| HAD SLIPPED  |               |           |        |      |        |
|              |               |           |        |      |        |
| FROM ITS     |               |           |        |      |        |
| GROOVE       |               |           |        |      |        |
| IMMEDIATELY  |               |           |        |      |        |
| PRIOR TO     |               |           |        |      |        |
| FLANGE MATE, |               |           |        |      |        |
| UNDETECTED   |               |           |        |      |        |
| BY;          |               |           |        |      |        |
|              |               |           |        |      |        |
| ASSEMBLY     |               |           |        |      |        |
| PERSONNEL.   |               |           |        |      |        |
| NO REASON    |               |           |        |      |        |
| WAS FOUND TO |               |           |        |      |        |
| INDICATE     |               |           |        |      |        |
| THAT EITHER  |               |           |        |      |        |
| THE          |               |           |        |      |        |
|              |               |           |        |      |        |
| SEAL OR      |               |           |        |      |        |
| FLANGE       |               |           |        |      |        |
| GROOVE WAS   |               |           |        |      |        |
| AT FAULT AS  |               |           |        |      |        |
| THE          |               |           |        |      |        |
| DIAMETERS    |               |           |        |      |        |
| ARE CHECKED  |               |           |        |      |        |
| AT           |               |           |        |      |        |
|              |               |           |        |      |        |
| THE          |               |           |        |      |        |
| SUPPLIERS    |               |           |        |      |        |
| AND          |               |           |        |      |        |
| DIMENSIONAL  |               |           |        |      |        |
| TOLERANCES   |               |           |        |      |        |
| CAN ALLOW A  |               |           |        |      |        |
| CLEARANCE    |               |           |        |      |        |
| FIT          |               |           |        |      |        |
|              |               |           |        |      |        |
| IN A WORST   |               |           |        |      |        |
| CASE         |               |           |        |      |        |
| CONDITION    |               |           |        |      |        |
| (MAXIMUM     |               |           |        |      |        |
| GROOVE       |               |           |        |      |        |
| DIAMETER     |               |           |        |      |        |
| COUPLED WITH |               |           |        |      |        |
|              |               |           |        |      |        |
| MINIMUM SEAL |               |           |        |      |        |
| DIAMETER).   |               |           |        |      |        |
| THIS ANOMALY |               |           |        |      |        |
| IS AN        |               |           |        |      |        |
| ISOLATED     |               |           |        |      |        |
| OCCURRENCE,  |               |           |        |      |        |
|              |               |           |        |      |        |
| DETECTABLE   |               |           |        |      |        |
| THROUGH TEST |               |           |        |      |        |
| AND AFFECTS  |               |           |        |      |        |
| NO OTHER ET. |               |           |        |      |        |
| ASSEMBLY     |               |           |        |      |        |
| PERSONNEL    |               |           |        |      |        |
|              |               |           |        |      |        |
| ARE AWARE OF |               |           |        |      |        |
| THEIR ERROR. |               |           |        |      |        |
| NO OTHER     |               |           |        |      |        |
| CORRECTIVE   |               |           |        |      |        |
| ACTION IS    |               |           |        |      |        |
| NECESSARY    |               |           |        |      |        |
|              |               |           |        |      |        |
| \* THIS      |               |           |        |      |        |
| PROBLEM      |               |           |        |      |        |
| CONDITION IS |               |           |        |      |        |
| CLEARLY      |               |           |        |      |        |
| SCREENED BY  |               |           |        |      |        |
| SPECIAL      |               |           |        |      |        |
| TESTS AND    |               |           |        |      |        |
|              |               |           |        |      |        |
| SHOULD NOT   |               |           |        |      |        |
| OCCUR        |               |           |        |      |        |
| FOLLOWING    |               |           |        |      |        |
| THE TESTS    |               |           |        |      |        |
|              |               |           |        |      |        |
| THIS CAPS IS |               |           |        |      |        |
| CLOSED. NO   |               |           |        |      |        |
| FURTHER      |               |           |        |      |        |
| ACTION IS    |               |           |        |      |        |
| REQUIRED     |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+
| **MSFC       |               |           |        |      |        |
| Response/C   |               |           |        |      |        |
| oncurrence** |               |           |        |      |        |
|              |               |           |        |      |        |
| 12/23/93 -   |               |           |        |      |        |
| DEFERRAL     |               |           |        |      |        |
| RATIONALE:   |               |           |        |      |        |
|              |               |           |        |      |        |
| BASED ON THE |               |           |        |      |        |
| DEFERRAL     |               |           |        |      |        |
| RATIONALE IN |               |           |        |      |        |
| \"TASK III.  |               |           |        |      |        |
| FLEET        |               |           |        |      |        |
| CLEARANCE\"  |               |           |        |      |        |
| (ABOVE),     |               |           |        |      |        |
|              |               |           |        |      |        |
| THIS REPORT  |               |           |        |      |        |
| HAS BEEN     |               |           |        |      |        |
| DEFERRED FOR |               |           |        |      |        |
| THE NEXT SIX |               |           |        |      |        |
| MONTHS PER   |               |           |        |      |        |
| NSTS 07700,  |               |           |        |      |        |
|              |               |           |        |      |        |
| VOLUME XI,   |               |           |        |      |        |
| PARAGRAPH    |               |           |        |      |        |
| 3.4.1, ITEM  |               |           |        |      |        |
| C AND NSTS   |               |           |        |      |        |
| 08126, REV.  |               |           |        |      |        |
| E, PARAGRAPH |               |           |        |      |        |
|              |               |           |        |      |        |
| 3.3.10.1,    |               |           |        |      |        |
| ITEM D WHICH |               |           |        |      |        |
| STATES \"THE |               |           |        |      |        |
| PROBLEM      |               |           |        |      |        |
| CONDITION IS |               |           |        |      |        |
| CLEARLY      |               |           |        |      |        |
| SCREENED     |               |           |        |      |        |
|              |               |           |        |      |        |
| BY PREFLIGHT |               |           |        |      |        |
| CHECKOUT OR  |               |           |        |      |        |
| SPECIAL      |               |           |        |      |        |
| TESTS (I.E., |               |           |        |      |        |
| FAILURE MODE |               |           |        |      |        |
| SHOULD NOT   |               |           |        |      |        |
|              |               |           |        |      |        |
| OCCUR        |               |           |        |      |        |
| FOLLOWING    |               |           |        |      |        |
| THE TEST).\" |               |           |        |      |        |
|              |               |           |        |      |        |
| THE DEFERRAL |               |           |        |      |        |
| RATIONALE    |               |           |        |      |        |
| HAS BEEN     |               |           |        |      |        |
| APPROVED BY  |               |           |        |      |        |
| THE EXTERNAL |               |           |        |      |        |
| TANK PROJECT |               |           |        |      |        |
|              |               |           |        |      |        |
| MANAGER, MR. |               |           |        |      |        |
| PARKER V.    |               |           |        |      |        |
| COUNTS       |               |           |        |      |        |
|              |               |           |        |      |        |
| SIGNED:      |               |           |        |      |        |
| \_\_\_PARKER |               |           |        |      |        |
| V. COUNTS    |               |           |        |      |        |
| (SIGNED)\_   |               |           |        |      |        |
| \_\_\_\_\_\_ |               |           |        |      |        |
| DATE:\_\_\_1 |               |           |        |      |        |
| /13/94\_\_\_ |               |           |        |      |        |
| \_\_\_\_\_\_ |               |           |        |      |        |
+--------------+---------------+-----------+--------+------+--------+

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

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

  ----------------- --------------- ---------------------- ----------- ----------- ------------
  **MSFC Report#**\ **IFA#**\       **Contractor RPT#**\   **JSC#**\   **KSC#**\   **EICN#**\
  A15743            \--             P-070                  \--         \--         \--

  **Asmnt Part#**\  **Asmnt Part    **Asmnt Serial/Lot#**\                         
  80901006000-059   Name**\         N/A                                            
                    ET COMPLETE                                                    

  **HCRIT CD**\     **FCRIT CD**\   **CAUSE CD**\          **FAIL                  
  \--               1               MAW - MFG-ASY-WORK     MODE**\                 
                                                           MV - EXT                
                                                           LEAK                    

  **Asmnt FMEA**\   **Asmnt FM**\   **FMEA CSE**\          **FMEA                  
  2.1.14.1          1               A                      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**                                                                           
  ----------------- --------------- ---------------------- ----------- ----------- ------------