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

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

+-------------+---------------+-----------+----------+------+--------+
| **MSFC      | **In-Flight   | **C       | *        | *    |        |
| Record      | Anomaly       | ontractor | *JSC#**\ | *KSC |        |
| \#**\       | Number**\     | Report    | \--      | #**\ |        |
| A14467      | STS-42-T-001  | Number**\ |          | \--  |        |
|             |               | T-062     |          |      |        |
+-------------+---------------+-----------+----------+------+--------+
| **Problem   |               |           |          |      |        |
| Title**\    |               |           |          |      |        |
| MISSING     |               |           |          |      |        |
| FOAM (TPS   |               |           |          |      |        |
| DIVOTS) IN  |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| ON          |               |           |          |      |        |
| S           |               |           |          |      |        |
| TS-42/ET-52 |               |           |          |      |        |
+-------------+---------------+-----------+----------+------+--------+
| **EICN#**\  | **ELEMENT**\  | **Cont    | **       | **   |        |
| \--         | ET            | ractor**\ | FSCM#**\ | FCRI |        |
|             |               | MMMSS     | \--      | T**\ |        |
|             |               |           |          | 1    |        |
+-------------+---------------+-----------+----------+------+--------+
| **HCRIT**\  | **Sys_Lvl**\  | **Misc    |          |      |        |
| \--         | N             | Codes**\  |          |      |        |
|             |               | A B C D E |          |      |        |
|             |               | F G       |          |      |        |
|             |               | **(X)** H |          |      |        |
|             |               | I J K L M |          |      |        |
|             |               | N O       |          |      |        |
+-------------+---------------+-----------+----------+------+--------+
| **          | **NO          | *         | **SER    | *    |        |
| HARDWARE**\ | MENCLATURE**\ | *PART#**\ | /LOT#**\ | *MAN |        |
| EIM         | \--           | \--       | \--      | UFAC |        |
|             |               |           |          | TURE |        |
|             |               |           |          | R**\ |        |
|             |               |           |          | \--  |        |
+-------------+---------------+-----------+----------+------+--------+
| **          | **NO          | *         | **SER    | *    |        |
| HARDWARE**\ | MENCLATURE**\ | *PART#**\ | /LOT#**\ | *MAN |        |
| LRU         | \--           | \--       | \--      | UFAC |        |
|             |               |           |          | TURE |        |
|             |               |           |          | R**\ |        |
|             |               |           |          | \--  |        |
+-------------+---------------+-----------+----------+------+--------+
| **          | **NO          | *         | **SER    | *    |        |
| HARDWARE**\ | MENCLATURE**\ | *PART#**\ | /LOT#**\ | *MAN |        |
| NCA         | ET COMPLETE   | 809010    | ET-52    | UFAC |        |
|             |               | 06000-059 |          | TURE |        |
|             |               |           |          | R**\ |        |
|             |               |           |          | M    |        |
|             |               |           |          | MMSS |        |
+-------------+---------------+-----------+----------+------+--------+
| **Test/O    | **Prevailing  | **F /     | **Fail   | **   |        |
| peration**\ | Condtion**\   | U**\      | Mode**\  | Caus |        |
| F - FLT     | F -           | UC        | MSI -    | e**\ |        |
|             | FUNCTIONAL    |           | IN       | U -  |        |
|             |               |           | SULATION | UNK  |        |
|             |               |           |          | NOWN |        |
+-------------+---------------+-----------+----------+------+--------+
| **System**\ | **Defect**\   | **Ma      | **Work   | **   |        |
| TPS         | DD - DETACH   | terial**\ | Co       | Fail |        |
|             |               | F - INSUL | ntact**\ | Dat  |        |
|             |               |           | K.       | e**\ |        |
|             |               |           | KILLIAN  | 01   |        |
|             |               |           |          | /22/ |        |
|             |               |           |          | 1992 |        |
+-------------+---------------+-----------+----------+------+--------+
| **Received  | **Date        | **FMEA    | **IFA:   | *    |        |
| at MSFC**\  | Isolated**\   | Ref       | Mission  | *Mis |        |
| 02/18/1992  | 02/17/1992    | erence**\ | Phase**\ | sion |        |
|             |               | 5.6.2.1   | ASCENT   | Ela  |        |
|             |               |           |          | psed |        |
|             |               |           |          | Tim  |        |
|             |               |           |          | e**\ |        |
|             |               |           |          | \--  |        |
+-------------+---------------+-----------+----------+------+--------+
| **          |               | **S       |          | **   |        |
| Location**\ |               | ymptom**\ |          | Time |        |
| KSC         |               | UC -      |          | Cycl |        |
|             |               | UNSAT     |          | e**\ |        |
|             |               |           |          | \--  |        |
+-------------+---------------+-----------+----------+------+--------+
| **          |               |           |          |      |        |
| Effectivity |               |           |          |      |        |
| Text**\     |               |           |          |      |        |
| 2/27/92 -   |               |           |          |      |        |
| DEFERRED    |               |           |          |      |        |
| FOR ET\'S   |               |           |          |      |        |
| 43-45 AND   |               |           |          |      |        |
| ET\'S 48-50 |               |           |          |      |        |
+-------------+---------------+-----------+----------+------+--------+
| **Vehicle   |               |           |          |      |        |
| Effectivity |               |           |          |      |        |
| Codes**     |               |           |          |      |        |
+-------------+---------------+-----------+----------+------+--------+
| **Vehicle   | **Vehicle     | **Vehicle | *        | *    |        |
| 1**\        | 2**\          | 3**\      | *Vehicle | *Veh |        |
| \--         | \--           | \--       | 4**\     | icle |        |
|             |               |           | \--      | 5**\ |        |
|             |               |           |          | \--  |        |
+-------------+---------------+-----------+----------+------+--------+
| **Mission   |               |           |          |      |        |
| Effectivity |               |           |          |      |        |
| Codes**     |               |           |          |      |        |
+-------------+---------------+-----------+----------+------+--------+
| **Mssn 1**\ | **Mssn 2**\   | **Mssn    | **Mssn   | **   |        |
| \--         | \--           | 3**\      | 4**\     | Mssn |        |
|             |               | \--       | \--      | 5**\ |        |
|             |               |           |          | \--  |        |
+-------------+---------------+-----------+----------+------+--------+
| **Estimated |               |           |          |      |        |
| Completion  |               |           |          |      |        |
| Dates**     |               |           |          |      |        |
+-------------+---------------+-----------+----------+------+--------+
| **MSFC      | **Contractor  | **LVL 3   | **Remark |      |        |
| Approved    | Req Defer     | Close**\  | /        |      |        |
| Defer Until | Until Date**\ | \--       | A        |      |        |
| Date**\     | \--           |           | ction**\ |      |        |
| \--         |               |           | \--      |      |        |
+-------------+---------------+-----------+----------+------+--------+
| **In        |               |           |          |      |        |
| vestigation |               |           |          |      |        |
| /           |               |           |          |      |        |
| Resolution  |               |           |          |      |        |
| Summary**   |               |           |          |      |        |
+-------------+---------------+-----------+----------+------+--------+
| **Last MSFC | **CN RSLV     | **Defer   | **Add    | *    |        |
| Update**\   | SBMT**\       | Date**\   | Date**\  | *R/C |        |
| 12/16/1992  | 08/27/1992    | 0         | 02       | Code |        |
|             |               | 2/27/1992 | /21/1992 | s**\ |        |
|             |               |           |          | 0 -  |        |
|             |               |           |          | EXPL |        |
|             |               |           |          | \--  |        |
|             |               |           |          | \--  |        |
+-------------+---------------+-----------+----------+------+--------+
| *           |               |           |          |      |        |
| *Assignee** |               |           |          |      |        |
+-------------+---------------+-----------+----------+------+--------+
| **Design**\ | **Chief       | **S &     | **Pr     | *    |        |
| C. BRAMON   | Engineer**\   | MA**\     | oject**\ | *Pro |        |
|             | M. PESSIN     | R.        | \--      | ject |        |
|             |               | JACKSON   |          | MG   |        |
|             |               |           |          | R**\ |        |
|             |               |           |          | P.   |        |
|             |               |           |          | CO   |        |
|             |               |           |          | UNTS |        |
+-------------+---------------+-----------+----------+------+--------+
| *           |               |           |          |      |        |
| *Approval** |               |           |          |      |        |
+-------------+---------------+-----------+----------+------+--------+
| **Design**\ | **Chief       | **S &     | **Pr     | *    |        |
| C. BRAMON   | Engineer**\   | MA**\     | oject**\ | *Pro |        |
|             | M. PESSIN     | R.        | \--      | ject |        |
|             |               | JACKSON   |          | MG   |        |
|             |               |           |          | R**\ |        |
|             |               |           |          | C.   |        |
|             |               |           |          | SU   |        |
|             |               |           |          | MNER |        |
+-------------+---------------+-----------+----------+------+--------+
| **PAC       | **PAC Review  | **MSFC    | **S      | *    |        |
| Assignee**\ | Complete**\   | Closure   | tatus**\ | *F/A |        |
| B. HURST    | BH            | Date**\   | C -      | C    |        |
|             |               | 0         | CLOSED   | ompl |        |
|             |               | 9/01/1992 |          | etio |        |
|             |               |           |          | n**\ |        |
|             |               |           |          | \--  |        |
+-------------+---------------+-----------+----------+------+--------+
| **Problem   | **SEV**\      | **Program | *        | **O  |        |
| Type**\     | \--           | Name**\   | *REVL**\ | PRIN |        |
| \--         |               | \--       | \--      | C**\ |        |
|             |               |           |          | \--  |        |
+-------------+---------------+-----------+----------+------+--------+
| **FUNC      | **Software    | *         |          | **SU | **So   |
| MOD**\      | E             | *Software |          | BTYP | ftware |
| \--         | ffectivity**\ | Fail      |          | E**\ | C      |
|             | \-- \-- \--   | CD**\     |          | \--  | losure |
|             | \-- \--       | \--       |          |      | CD**\  |
|             |               |           |          |      | \--    |
+-------------+---------------+-----------+----------+------+--------+
| **RES       | **Approval    |           |          |      |        |
| PERSON      | Signature     |           |          |      |        |
| L2**\       | 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**   |               |           |          |      |        |
+-------------+---------------+-----------+----------+------+--------+
| **Reliabil  |               |           |          |      |        |
| ity/Quality |               |           |          |      |        |
| Assurance   |               |           |          |      |        |
| Concerns,   |               |           |          |      |        |
| Recomme     |               |           |          |      |        |
| ndations:** |               |           |          |      |        |
+-------------+---------------+-----------+----------+------+--------+
| **Problem   |               |           |          |      |        |
| De          |               |           |          |      |        |
| scription** |               |           |          |      |        |
|             |               |           |          |      |        |
| POST        |               |           |          |      |        |
| -SEPARATION |               |           |          |      |        |
| ET          |               |           |          |      |        |
| PHOTOGRAPHS |               |           |          |      |        |
| TAKEN BY    |               |           |          |      |        |
| THE CREW    |               |           |          |      |        |
| SHOW        |               |           |          |      |        |
| POSSIBLE    |               |           |          |      |        |
| MISSING     |               |           |          |      |        |
|             |               |           |          |      |        |
| FOAM IN THE |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| FOAM        |               |           |          |      |        |
| ACREAGE ON  |               |           |          |      |        |
| S           |               |           |          |      |        |
| TS-42/ET-52 |               |           |          |      |        |
| AS          |               |           |          |      |        |
| DOCUMENTED  |               |           |          |      |        |
| ON IFA      |               |           |          |      |        |
|             |               |           |          |      |        |
| S           |               |           |          |      |        |
| TS-42-T-001 |               |           |          |      |        |
|             |               |           |          |      |        |
| HIGHER THAN |               |           |          |      |        |
| AVERAGE     |               |           |          |      |        |
| TILE DAMAGE |               |           |          |      |        |
| MAY BE      |               |           |          |      |        |
| RELATED     |               |           |          |      |        |
+-------------+---------------+-----------+----------+------+--------+
| *           |               |           |          |      |        |
| *Contractor |               |           |          |      |        |
| Inve        |               |           |          |      |        |
| stigation/R |               |           |          |      |        |
| esolution** |               |           |          |      |        |
+-------------+---------------+-----------+----------+------+--------+
| **MSFC      |               |           |          |      |        |
| Response/Co |               |           |          |      |        |
| ncurrence** |               |           |          |      |        |
|             |               |           |          |      |        |
| THE         |               |           |          |      |        |
| EXTERNAL    |               |           |          |      |        |
| TANK\'S     |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| TPS         |               |           |          |      |        |
| A           |               |           |          |      |        |
| PPLICATION, |               |           |          |      |        |
| THROUGH     |               |           |          |      |        |
| ET-50,      |               |           |          |      |        |
| INVOLVES    |               |           |          |      |        |
|             |               |           |          |      |        |
| TWO         |               |           |          |      |        |
| DIFFERENT   |               |           |          |      |        |
| SOFI        |               |           |          |      |        |
| CONF        |               |           |          |      |        |
| IGURATIONS. |               |           |          |      |        |
| THE +/- Y   |               |           |          |      |        |
| THRUST      |               |           |          |      |        |
| PANELS AND  |               |           |          |      |        |
| AN AREA     |               |           |          |      |        |
|             |               |           |          |      |        |
| OF THE + Z  |               |           |          |      |        |
| PANELS HAVE |               |           |          |      |        |
| BX-250      |               |           |          |      |        |
| FILLING THE |               |           |          |      |        |
| VALLEY      |               |           |          |      |        |
| BETWEEN THE |               |           |          |      |        |
| STRINGERS   |               |           |          |      |        |
|             |               |           |          |      |        |
| WITH        |               |           |          |      |        |
| ISOCHEM     |               |           |          |      |        |
| APPLIED     |               |           |          |      |        |
| OVER THE    |               |           |          |      |        |
| BX-250. CPR |               |           |          |      |        |
| IS APPLIED  |               |           |          |      |        |
| OVER THE    |               |           |          |      |        |
| BX-250      |               |           |          |      |        |
|             |               |           |          |      |        |
| AND ISOCHEM |               |           |          |      |        |
| DURING THE  |               |           |          |      |        |
| SPRAY OF    |               |           |          |      |        |
| THE         |               |           |          |      |        |
| INTERTANK.  |               |           |          |      |        |
| THE FINAL   |               |           |          |      |        |
| TPS         |               |           |          |      |        |
|             |               |           |          |      |        |
| CO          |               |           |          |      |        |
| NFIGURATION |               |           |          |      |        |
| INCLUDES    |               |           |          |      |        |
| TWO-TONE    |               |           |          |      |        |
| AREAS (CPR  |               |           |          |      |        |
| OVER BX)    |               |           |          |      |        |
| AND CPR-488 |               |           |          |      |        |
| OVER THE    |               |           |          |      |        |
|             |               |           |          |      |        |
| PRIMED      |               |           |          |      |        |
| SUBSTRATE.  |               |           |          |      |        |
| VENT HOLES  |               |           |          |      |        |
| ARE DRILLED |               |           |          |      |        |
| IN THE      |               |           |          |      |        |
| TWO-TONE    |               |           |          |      |        |
| AREAS AT    |               |           |          |      |        |
| KSC         |               |           |          |      |        |
|             |               |           |          |      |        |
| THESE       |               |           |          |      |        |
| EIGHTH      |               |           |          |      |        |
| -OF-AN-INCH |               |           |          |      |        |
| DIAMETER    |               |           |          |      |        |
| HOLES ARE   |               |           |          |      |        |
| LOCATED IN  |               |           |          |      |        |
| THE VALLEYS |               |           |          |      |        |
|             |               |           |          |      |        |
| BETWEEN THE |               |           |          |      |        |
| STRINGERS   |               |           |          |      |        |
| AND         |               |           |          |      |        |
| PENETRATE   |               |           |          |      |        |
| THROUGH THE |               |           |          |      |        |
| CPR-        |               |           |          |      |        |
| 488/ISOCHEM |               |           |          |      |        |
|             |               |           |          |      |        |
| INTERFACE   |               |           |          |      |        |
| TO ALLOW    |               |           |          |      |        |
| VENTING OF  |               |           |          |      |        |
| ANY         |               |           |          |      |        |
| LOCALIZED   |               |           |          |      |        |
| VOIDS THAT  |               |           |          |      |        |
| MAY EXIST   |               |           |          |      |        |
|             |               |           |          |      |        |
| EFFECTIVE   |               |           |          |      |        |
| ET-51 AND   |               |           |          |      |        |
| SUBSEQUENT, |               |           |          |      |        |
| THE FOAM    |               |           |          |      |        |
| CO          |               |           |          |      |        |
| NFIGURATION |               |           |          |      |        |
| WAS REVISED |               |           |          |      |        |
| FROM        |               |           |          |      |        |
|             |               |           |          |      |        |
| FILLING OF  |               |           |          |      |        |
| THE VALLEYS |               |           |          |      |        |
| WITH BX-250 |               |           |          |      |        |
| TO THE USE  |               |           |          |      |        |
| OF THE TWO  |               |           |          |      |        |
| (2) SPRAY   |               |           |          |      |        |
| GUNS        |               |           |          |      |        |
|             |               |           |          |      |        |
| WHICH FILL  |               |           |          |      |        |
| THE VALLEYS |               |           |          |      |        |
| BETWEEN THE |               |           |          |      |        |
| STRUCTURAL  |               |           |          |      |        |
| STRINGERS   |               |           |          |      |        |
| AND COVER   |               |           |          |      |        |
| THE         |               |           |          |      |        |
|             |               |           |          |      |        |
| STRINGERS   |               |           |          |      |        |
| IN A SINGLE |               |           |          |      |        |
| CPR FOAM    |               |           |          |      |        |
| SPRAY       |               |           |          |      |        |
|             |               |           |          |      |        |
| TASK I.     |               |           |          |      |        |
| FAILURE     |               |           |          |      |        |
| IN          |               |           |          |      |        |
| VESTIGATION |               |           |          |      |        |
|             |               |           |          |      |        |
| A. MATERIAL |               |           |          |      |        |
| SCIENCES    |               |           |          |      |        |
| (TPS        |               |           |          |      |        |
| E           |               |           |          |      |        |
| NGINEERING) |               |           |          |      |        |
|             |               |           |          |      |        |
| 1\. REVIEW  |               |           |          |      |        |
| AVAILABLE   |               |           |          |      |        |
| PHOTOGRAPHS |               |           |          |      |        |
| AND FILM OF |               |           |          |      |        |
| ET-52 FOR   |               |           |          |      |        |
| MISSING     |               |           |          |      |        |
|             |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| FOAM AND    |               |           |          |      |        |
| DETERMINE   |               |           |          |      |        |
| APPROXIMATE |               |           |          |      |        |
| SIZE AND    |               |           |          |      |        |
| DEPTH OF    |               |           |          |      |        |
|             |               |           |          |      |        |
| AREAS       |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| REVIEW OF   |               |           |          |      |        |
| ALL         |               |           |          |      |        |
| AVAILABLE   |               |           |          |      |        |
| PHOTOGRAPHS |               |           |          |      |        |
| HAS BEEN    |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETED   |               |           |          |      |        |
| AT MAF,     |               |           |          |      |        |
| JSC, MSFC,  |               |           |          |      |        |
| AND KSC.    |               |           |          |      |        |
| THE         |               |           |          |      |        |
| PHOTOGRAPHS |               |           |          |      |        |
| SHOW TWO    |               |           |          |      |        |
| LIGHT       |               |           |          |      |        |
|             |               |           |          |      |        |
| SPOTS ON    |               |           |          |      |        |
| THE         |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| ACREAGE AT  |               |           |          |      |        |
| XT=1062,    |               |           |          |      |        |
| 55.1        |               |           |          |      |        |
| DEGREES     |               |           |          |      |        |
| FROM +Z     |               |           |          |      |        |
| TOWARDS     |               |           |          |      |        |
|             |               |           |          |      |        |
| -Y AND AT   |               |           |          |      |        |
| XT=1081,    |               |           |          |      |        |
| 45.4        |               |           |          |      |        |
| DEGREES     |               |           |          |      |        |
| FROM +Z     |               |           |          |      |        |
| TOWARDS -Y. |               |           |          |      |        |
| THE SPOTS   |               |           |          |      |        |
| HAVE BEEN   |               |           |          |      |        |
|             |               |           |          |      |        |
| ESTIMATED   |               |           |          |      |        |
| TO BE       |               |           |          |      |        |
| AP          |               |           |          |      |        |
| PROXIMATELY |               |           |          |      |        |
| 14 INCHES   |               |           |          |      |        |
| IN          |               |           |          |      |        |
| DIAMETER.   |               |           |          |      |        |
| NONE OF THE |               |           |          |      |        |
|             |               |           |          |      |        |
| PHOTOGRAPHS |               |           |          |      |        |
| HAVE        |               |           |          |      |        |
| SUFFICIENT  |               |           |          |      |        |
| RESOLUTION  |               |           |          |      |        |
| TO          |               |           |          |      |        |
| DETERMINE   |               |           |          |      |        |
| THE DEPTH   |               |           |          |      |        |
| OF THESE    |               |           |          |      |        |
|             |               |           |          |      |        |
| FEATURES.   |               |           |          |      |        |
| PRE-LAUNCH  |               |           |          |      |        |
| PHOTOGRAPHS |               |           |          |      |        |
| TAKEN       |               |           |          |      |        |
| AP          |               |           |          |      |        |
| PROXIMATELY |               |           |          |      |        |
| 3 HOURS     |               |           |          |      |        |
| BEFORE      |               |           |          |      |        |
|             |               |           |          |      |        |
| LAUNCH SHOW |               |           |          |      |        |
| NO VISIBLE  |               |           |          |      |        |
| EXISTING    |               |           |          |      |        |
| DAMAGE OR   |               |           |          |      |        |
| REPAIRS IN  |               |           |          |      |        |
| THESE       |               |           |          |      |        |
| AREAS. NO   |               |           |          |      |        |
|             |               |           |          |      |        |
| OTHER       |               |           |          |      |        |
| ANOMALIES   |               |           |          |      |        |
| ARE CLEARLY |               |           |          |      |        |
| VISIBLE IN  |               |           |          |      |        |
| ANY OF THE  |               |           |          |      |        |
| POST        |               |           |          |      |        |
| -SEPARATION |               |           |          |      |        |
| VIEWS       |               |           |          |      |        |
|             |               |           |          |      |        |
| HOWEVER,    |               |           |          |      |        |
| JSC WILL    |               |           |          |      |        |
| REPORT      |               |           |          |      |        |
| ADDITIONAL  |               |           |          |      |        |
| SUSPECT     |               |           |          |      |        |
| ANOMALIES   |               |           |          |      |        |
| NEAR THE +Y |               |           |          |      |        |
| ET/SRB      |               |           |          |      |        |
|             |               |           |          |      |        |
| FITTING.    |               |           |          |      |        |
| PHOTOGRAPHS |               |           |          |      |        |
| OF THIS     |               |           |          |      |        |
| AREA ARE    |               |           |          |      |        |
| VERY POOR   |               |           |          |      |        |
| AND DO NOT  |               |           |          |      |        |
| HAVE        |               |           |          |      |        |
|             |               |           |          |      |        |
| SUFFICIENT  |               |           |          |      |        |
| DETAIL TO   |               |           |          |      |        |
| DETERMINE   |               |           |          |      |        |
| IF A        |               |           |          |      |        |
| PROBLEM     |               |           |          |      |        |
| ACTUALLY    |               |           |          |      |        |
| EXISTS IN   |               |           |          |      |        |
| THIS        |               |           |          |      |        |
|             |               |           |          |      |        |
| AREA.       |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW,     |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 1    |               |           |          |      |        |
|             |               |           |          |      |        |
| AND 6)      |               |           |          |      |        |
|             |               |           |          |      |        |
| 2\. REVIEW  |               |           |          |      |        |
| SRB DAMAGE  |               |           |          |      |        |
| REPORTS FOR |               |           |          |      |        |
| LOSS OR     |               |           |          |      |        |
| DAMAGE TO   |               |           |          |      |        |
| TPS. REVIEW |               |           |          |      |        |
|             |               |           |          |      |        |
| USBI\'S SRB |               |           |          |      |        |
| NOSE CONE   |               |           |          |      |        |
| FABRICATION |               |           |          |      |        |
| PROCESS FOR |               |           |          |      |        |
| POTENTIAL   |               |           |          |      |        |
| CHANGES     |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| THE DAMAGE  |               |           |          |      |        |
| REPORT OF   |               |           |          |      |        |
| THE LEFT    |               |           |          |      |        |
| HAND SRB    |               |           |          |      |        |
| FRUSTUM AND |               |           |          |      |        |
|             |               |           |          |      |        |
| FORWARD     |               |           |          |      |        |
| SKIRT WAS   |               |           |          |      |        |
| REVIEWED.   |               |           |          |      |        |
| THERE WAS   |               |           |          |      |        |
| NO MISSING  |               |           |          |      |        |
| ABLATOR.    |               |           |          |      |        |
| SOME SMALL  |               |           |          |      |        |
|             |               |           |          |      |        |
| \"UNBONDS\" |               |           |          |      |        |
| WERE        |               |           |          |      |        |
| PRESENT AND |               |           |          |      |        |
| THE BOND    |               |           |          |      |        |
| STRENGTH    |               |           |          |      |        |
| VALUES ON   |               |           |          |      |        |
| NOSE CONE   |               |           |          |      |        |
| AND         |               |           |          |      |        |
|             |               |           |          |      |        |
| BEANIE CAP  |               |           |          |      |        |
| WERE WITHIN |               |           |          |      |        |
| SP          |               |           |          |      |        |
| ECIFICATION |               |           |          |      |        |
| RE          |               |           |          |      |        |
| QUIREMENTS. |               |           |          |      |        |
| ALSO, THERE |               |           |          |      |        |
| WERE NO     |               |           |          |      |        |
|             |               |           |          |      |        |
| REPAIR OR   |               |           |          |      |        |
| SUSPECT     |               |           |          |      |        |
| AREAS       |               |           |          |      |        |
| NOTED.      |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
|             |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 11)  |               |           |          |      |        |
|             |               |           |          |      |        |
| 3\.         |               |           |          |      |        |
| DETERMINE   |               |           |          |      |        |
| HOW SAFETY  |               |           |          |      |        |
| MATS ARE    |               |           |          |      |        |
| INSTALLED   |               |           |          |      |        |
| ON THE      |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| FOR         |               |           |          |      |        |
|             |               |           |          |      |        |
| HORIZONTAL  |               |           |          |      |        |
| ACCESS      |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| STYROFOAM   |               |           |          |      |        |
| WEDGES IN   |               |           |          |      |        |
| THE VALLEYS |               |           |          |      |        |
| BETWEEN THE |               |           |          |      |        |
|             |               |           |          |      |        |
| STRINGERS   |               |           |          |      |        |
| AND MATS    |               |           |          |      |        |
| ARE         |               |           |          |      |        |
| REQUIRED    |               |           |          |      |        |
| PER FINAL   |               |           |          |      |        |
| ASSEMBLY    |               |           |          |      |        |
| SET-UP LOG  |               |           |          |      |        |
|             |               |           |          |      |        |
| 80911001000 |               |           |          |      |        |
| OP105. THE  |               |           |          |      |        |
| LOCATION    |               |           |          |      |        |
| AND NUMBER  |               |           |          |      |        |
| OF MATS     |               |           |          |      |        |
| USED ARE    |               |           |          |      |        |
| DETERMINED  |               |           |          |      |        |
|             |               |           |          |      |        |
| BY THE      |               |           |          |      |        |
| LOCAL       |               |           |          |      |        |
| SUPERVISOR. |               |           |          |      |        |
| THE         |               |           |          |      |        |
| LOCATION OF |               |           |          |      |        |
| THE SUSPECT |               |           |          |      |        |
| DIVOTS ON   |               |           |          |      |        |
| THE         |               |           |          |      |        |
|             |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| DO NOT FALL |               |           |          |      |        |
| WITHIN THE  |               |           |          |      |        |
| REQUIRED    |               |           |          |      |        |
| WORK AREAS, |               |           |          |      |        |
| THUS ARE    |               |           |          |      |        |
| LOCATED     |               |           |          |      |        |
|             |               |           |          |      |        |
| OUTSIDE THE |               |           |          |      |        |
| AREA        |               |           |          |      |        |
| USUALLY     |               |           |          |      |        |
| COVERED BY  |               |           |          |      |        |
| THE MATS.   |               |           |          |      |        |
| ATTACHED    |               |           |          |      |        |
| PHOTOGRAPHS |               |           |          |      |        |
| ARE         |               |           |          |      |        |
|             |               |           |          |      |        |
| OF ET-52    |               |           |          |      |        |
| DURING      |               |           |          |      |        |
| ASSEMBLY    |               |           |          |      |        |
| WORK IN     |               |           |          |      |        |
| FINAL       |               |           |          |      |        |
| ASSEMBLY    |               |           |          |      |        |
| AND SHOW    |               |           |          |      |        |
| THE NORMAL  |               |           |          |      |        |
|             |               |           |          |      |        |
| PLACEMENT   |               |           |          |      |        |
| OF WEDGES   |               |           |          |      |        |
| AND MATS.   |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
|             |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 16)  |               |           |          |      |        |
|             |               |           |          |      |        |
| 4\. MSFC    |               |           |          |      |        |
| L           |               |           |          |      |        |
| ABORATORIES |               |           |          |      |        |
| IS          |               |           |          |      |        |
| ANALYZING   |               |           |          |      |        |
| DAMAGED     |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| TILES       |               |           |          |      |        |
|             |               |           |          |      |        |
| FOR TRACES  |               |           |          |      |        |
| OF          |               |           |          |      |        |
| IMPACTING   |               |           |          |      |        |
| MATERIAL.   |               |           |          |      |        |
| VERIFY THE  |               |           |          |      |        |
| RESULT OF   |               |           |          |      |        |
| THE         |               |           |          |      |        |
|             |               |           |          |      |        |
| ANALYSIS.   |               |           |          |      |        |
| (NOTE: MSFC |               |           |          |      |        |
| ANALYSIS IS |               |           |          |      |        |
| COMPLETE.   |               |           |          |      |        |
| EXECUTIVE   |               |           |          |      |        |
| SUMMARY     |               |           |          |      |        |
|             |               |           |          |      |        |
| IS DUE      |               |           |          |      |        |
| 6/23/92)    |               |           |          |      |        |
|             |               |           |          |      |        |
| 1ST ECD:    |               |           |          |      |        |
| 2/28/92 2ND |               |           |          |      |        |
| ECD: 4/6/92 |               |           |          |      |        |
|             |               |           |          |      |        |
| 3RD ECD:    |               |           |          |      |        |
| 6/30/92     |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 8/27/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| LABORATORY  |               |           |          |      |        |
| ANALYSIS OF |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| TILE WAS    |               |           |          |      |        |
|             |               |           |          |      |        |
| IN          |               |           |          |      |        |
| CONCLUSIVE, |               |           |          |      |        |
| A           |               |           |          |      |        |
| DE          |               |           |          |      |        |
| TERMINATION |               |           |          |      |        |
| OF THE      |               |           |          |      |        |
| CAUSE OF    |               |           |          |      |        |
| THE TILE    |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| COULD NOT   |               |           |          |      |        |
|             |               |           |          |      |        |
| BE          |               |           |          |      |        |
| A           |               |           |          |      |        |
| SCERTAINED. |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
|             |               |           |          |      |        |
| NUMBER 18)  |               |           |          |      |        |
|             |               |           |          |      |        |
| 5\.         |               |           |          |      |        |
| CONSTRUCT   |               |           |          |      |        |
| FAULT TREES |               |           |          |      |        |
| FOR         |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| LOSS OF TPS |               |           |          |      |        |
| AND FOR     |               |           |          |      |        |
|             |               |           |          |      |        |
| OVERALL ET  |               |           |          |      |        |
| DEBRIS      |               |           |          |      |        |
| SOURCES     |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| WORKING     |               |           |          |      |        |
| FAULT TREES |               |           |          |      |        |
| HAVE BEEN   |               |           |          |      |        |
| PROVIDED    |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
|             |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 19)  |               |           |          |      |        |
|             |               |           |          |      |        |
| 6\.         |               |           |          |      |        |
| REVI        |               |           |          |      |        |
| EW/EVALUATE |               |           |          |      |        |
| THE EFFECTS |               |           |          |      |        |
| OF          |               |           |          |      |        |
| MOMENTARY   |               |           |          |      |        |
| GUN         |               |           |          |      |        |
| ANOMALIES   |               |           |          |      |        |
| ON FOAM     |               |           |          |      |        |
|             |               |           |          |      |        |
| INTEGRITY   |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 3/20/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
|             |               |           |          |      |        |
| AVAILABLE   |               |           |          |      |        |
| DATA        |               |           |          |      |        |
| INDICATE    |               |           |          |      |        |
| THAT FOAM   |               |           |          |      |        |
| RATIOS FROM |               |           |          |      |        |
| 1.25 TO 1   |               |           |          |      |        |
| THROUGH     |               |           |          |      |        |
| 2.75 TO     |               |           |          |      |        |
|             |               |           |          |      |        |
| 1 (NORMAL   |               |           |          |      |        |
| RATIO IS 2  |               |           |          |      |        |
| TO 1) DO    |               |           |          |      |        |
| NOT         |               |           |          |      |        |
| D           |               |           |          |      |        |
| RAMATICALLY |               |           |          |      |        |
| AFFECT FOAM |               |           |          |      |        |
| STRENGTH    |               |           |          |      |        |
|             |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 27)  |               |           |          |      |        |
|             |               |           |          |      |        |
| B. PRODUCT  |               |           |          |      |        |
| ASSURANCE   |               |           |          |      |        |
|             |               |           |          |      |        |
| 1\.         |               |           |          |      |        |
| DETERMINE   |               |           |          |      |        |
| CPR LOT     |               |           |          |      |        |
| USED IN     |               |           |          |      |        |
| FABRICATION |               |           |          |      |        |
| OF ET-52    |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
|             |               |           |          |      |        |
| DETERMINE   |               |           |          |      |        |
| OTHER USES  |               |           |          |      |        |
| OF THIS LOT |               |           |          |      |        |
| AND ANY     |               |           |          |      |        |
| ASSOCIATED  |               |           |          |      |        |
| ANOMALIES   |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| CPR         |               |           |          |      |        |
| MATERIAL    |               |           |          |      |        |
| LOT #87G265 |               |           |          |      |        |
| WAS USED ON |               |           |          |      |        |
| ET-52       |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
|             |               |           |          |      |        |
| (EXPIRATION |               |           |          |      |        |
| DATE 4/88). |               |           |          |      |        |
| OTHER USES  |               |           |          |      |        |
| OF LOT      |               |           |          |      |        |
| #87G265 ARE |               |           |          |      |        |
| ET-51 L02   |               |           |          |      |        |
| TANK,       |               |           |          |      |        |
|             |               |           |          |      |        |
| ET-52 L02   |               |           |          |      |        |
| AND LH2     |               |           |          |      |        |
| TANKS, ETS  |               |           |          |      |        |
| 53 AND 54   |               |           |          |      |        |
| INTERTANKS  |               |           |          |      |        |
|             |               |           |          |      |        |
| NO          |               |           |          |      |        |
| ANOMALOUS   |               |           |          |      |        |
| CONDITIONS  |               |           |          |      |        |
| WERE        |               |           |          |      |        |
| ASSOCIATED  |               |           |          |      |        |
| WITH THE    |               |           |          |      |        |
| USE OF CPR  |               |           |          |      |        |
| LOT #87G265 |               |           |          |      |        |
|             |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 8)   |               |           |          |      |        |
|             |               |           |          |      |        |
| 2\. EXTRACT |               |           |          |      |        |
| ETS -51     |               |           |          |      |        |
| THROUGH 55  |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| ACCEPTANCE  |               |           |          |      |        |
| PLUG PULL   |               |           |          |      |        |
| DATA        |               |           |          |      |        |
|             |               |           |          |      |        |
| AND         |               |           |          |      |        |
| REQUIREMENT |               |           |          |      |        |
| FROM THE    |               |           |          |      |        |
| FABRICATION |               |           |          |      |        |
| RECORDS.    |               |           |          |      |        |
| INDICATE    |               |           |          |      |        |
| ANY OUT     |               |           |          |      |        |
|             |               |           |          |      |        |
| OF          |               |           |          |      |        |
| SP          |               |           |          |      |        |
| ECIFICATION |               |           |          |      |        |
| DATA        |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| PLUG PULL   |               |           |          |      |        |
| ACCEPTANCE  |               |           |          |      |        |
| OF TWO GUN  |               |           |          |      |        |
| SPRAY WAS   |               |           |          |      |        |
| REVIEWED    |               |           |          |      |        |
|             |               |           |          |      |        |
| FOR ETS     |               |           |          |      |        |
| 51-55       |               |           |          |      |        |
|             |               |           |          |      |        |
| \- NO       |               |           |          |      |        |
| ANOMALOUS   |               |           |          |      |        |
| CONDITIONS  |               |           |          |      |        |
| WERE        |               |           |          |      |        |
| ASSOCIATED  |               |           |          |      |        |
| WITH FOAM   |               |           |          |      |        |
| APPLIED PER |               |           |          |      |        |
| TWO GUN     |               |           |          |      |        |
|             |               |           |          |      |        |
| SPRAY       |               |           |          |      |        |
| PROCESS FOR |               |           |          |      |        |
| ETS 52, 54, |               |           |          |      |        |
| AND 55      |               |           |          |      |        |
|             |               |           |          |      |        |
| \- ONE (1)  |               |           |          |      |        |
| LOW PLUG    |               |           |          |      |        |
| PULL VALUE  |               |           |          |      |        |
| WAS         |               |           |          |      |        |
| DETECTED ON |               |           |          |      |        |
| ET 51       |               |           |          |      |        |
|             |               |           |          |      |        |
| \- ONE (1)  |               |           |          |      |        |
| LOW PLUG    |               |           |          |      |        |
| PULL VALUE  |               |           |          |      |        |
| WAS         |               |           |          |      |        |
| DETECTED ON |               |           |          |      |        |
| ET 53       |               |           |          |      |        |
|             |               |           |          |      |        |
| \- THESE    |               |           |          |      |        |
| AREAS WERE  |               |           |          |      |        |
| CLEARED BY  |               |           |          |      |        |
| ACCEPTANCE  |               |           |          |      |        |
| ADJACENT    |               |           |          |      |        |
| RETESTS     |               |           |          |      |        |
|             |               |           |          |      |        |
| \- A REVIEW |               |           |          |      |        |
| OF THE CODE |               |           |          |      |        |
| 3 RISK      |               |           |          |      |        |
| DEFECT LOG  |               |           |          |      |        |
| DISCLOSED   |               |           |          |      |        |
| THAT NO     |               |           |          |      |        |
| PLUG        |               |           |          |      |        |
|             |               |           |          |      |        |
| PULLERS,    |               |           |          |      |        |
| FOR THIS    |               |           |          |      |        |
| TIME FRAME, |               |           |          |      |        |
| WOULD HAVE  |               |           |          |      |        |
| ACCEPTED    |               |           |          |      |        |
| U           |               |           |          |      |        |
| NACCEPTABLE |               |           |          |      |        |
|             |               |           |          |      |        |
| FOAM.       |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42 -    |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER      |               |           |          |      |        |
|             |               |           |          |      |        |
| 9\)         |               |           |          |      |        |
|             |               |           |          |      |        |
| 3\. REVIEW  |               |           |          |      |        |
| TPS MRB     |               |           |          |      |        |
| MARS FOR    |               |           |          |      |        |
| ETS 51-53.  |               |           |          |      |        |
| REPORT ANY  |               |           |          |      |        |
| ANOMALIES   |               |           |          |      |        |
| THAT        |               |           |          |      |        |
|             |               |           |          |      |        |
| MAY BE      |               |           |          |      |        |
| POTENTIALLY |               |           |          |      |        |
| RELATED TO  |               |           |          |      |        |
| LOSS OF     |               |           |          |      |        |
| FOAM        |               |           |          |      |        |
| FORWARD OF  |               |           |          |      |        |
| STATION     |               |           |          |      |        |
|             |               |           |          |      |        |
| 1129        |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| EIGHT TPS   |               |           |          |      |        |
| MRB MARS    |               |           |          |      |        |
| WERE        |               |           |          |      |        |
| DETECTED AS |               |           |          |      |        |
| POTENTIALLY |               |           |          |      |        |
|             |               |           |          |      |        |
| RELATED. (3 |               |           |          |      |        |
| ON ET-51, 2 |               |           |          |      |        |
| ON ET-52    |               |           |          |      |        |
| AND 3 ON    |               |           |          |      |        |
| ET-53)      |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
|             |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 10)  |               |           |          |      |        |
|             |               |           |          |      |        |
| 4\. REVIEW  |               |           |          |      |        |
| VENDOR\'S   |               |           |          |      |        |
| (AVCO, NOW  |               |           |          |      |        |
| TEXTRON     |               |           |          |      |        |
| AERO        |               |           |          |      |        |
| STRUCTURES) |               |           |          |      |        |
| FABRICATION |               |           |          |      |        |
|             |               |           |          |      |        |
| PAPERWORK   |               |           |          |      |        |
| FOR PRIMING |               |           |          |      |        |
| OR CLEANING |               |           |          |      |        |
| ANOMALIES   |               |           |          |      |        |
| OF THE +Z   |               |           |          |      |        |
|             |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| PANELS      |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| ALL OF      |               |           |          |      |        |
| VENDOR\'S   |               |           |          |      |        |
| FABRICATION |               |           |          |      |        |
| PAPERWORK   |               |           |          |      |        |
| CONCERNING  |               |           |          |      |        |
|             |               |           |          |      |        |
| THESE       |               |           |          |      |        |
| PANELS WAS  |               |           |          |      |        |
| LOST IN A   |               |           |          |      |        |
| RECENT      |               |           |          |      |        |
| FIRE.       |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
|             |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 17)  |               |           |          |      |        |
|             |               |           |          |      |        |
| 5\. EXTRACT |               |           |          |      |        |
| FROM THE    |               |           |          |      |        |
| MPP\'S OF   |               |           |          |      |        |
| ET\'S 51-53 |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| CPR FOAM    |               |           |          |      |        |
| SPRAY       |               |           |          |      |        |
|             |               |           |          |      |        |
| E           |               |           |          |      |        |
| NVIRONMENTS |               |           |          |      |        |
| OF CELLS,   |               |           |          |      |        |
| FLOW RATES, |               |           |          |      |        |
| SUBSTRATES  |               |           |          |      |        |
| TE          |               |           |          |      |        |
| MPERATURES, |               |           |          |      |        |
| ETC         |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| A REVIEW OF |               |           |          |      |        |
| THE MPP\'S  |               |           |          |      |        |
| FOR ETS     |               |           |          |      |        |
| 51-53       |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| CPR         |               |           |          |      |        |
|             |               |           |          |      |        |
| FOAM        |               |           |          |      |        |
| APPLICATION |               |           |          |      |        |
| WAS         |               |           |          |      |        |
| CONDUCTED   |               |           |          |      |        |
| AND         |               |           |          |      |        |
| DISCLOSED   |               |           |          |      |        |
| NO OUT OF   |               |           |          |      |        |
| SP          |               |           |          |      |        |
| ECIFICATION |               |           |          |      |        |
|             |               |           |          |      |        |
| PROCESSING  |               |           |          |      |        |
| CONDITIONS. |               |           |          |      |        |
| THERE WERE  |               |           |          |      |        |
| NO          |               |           |          |      |        |
| SIGNIFICANT |               |           |          |      |        |
| DIFFERENCES |               |           |          |      |        |
| IN THE      |               |           |          |      |        |
|             |               |           |          |      |        |
| FOAM        |               |           |          |      |        |
| APPLICATION |               |           |          |      |        |
| CONDITIONS  |               |           |          |      |        |
| OF THE      |               |           |          |      |        |
| THREE (3)   |               |           |          |      |        |
| INTERTANKS. |               |           |          |      |        |
| MATRICES    |               |           |          |      |        |
| FOR         |               |           |          |      |        |
|             |               |           |          |      |        |
| EACH        |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| FOAM        |               |           |          |      |        |
| APPLICATION |               |           |          |      |        |
| CO          |               |           |          |      |        |
| NSOLIDATING |               |           |          |      |        |
| THE         |               |           |          |      |        |
| EXTRACTED   |               |           |          |      |        |
| DATA HAVE   |               |           |          |      |        |
|             |               |           |          |      |        |
| BEEN        |               |           |          |      |        |
| CONTRUCTED  |               |           |          |      |        |
| AND COPIES  |               |           |          |      |        |
| OF THE      |               |           |          |      |        |
| WEATHER     |               |           |          |      |        |
| SUMMARIES   |               |           |          |      |        |
| (RECORDED   |               |           |          |      |        |
| AT NEW      |               |           |          |      |        |
|             |               |           |          |      |        |
| ORLEANS     |               |           |          |      |        |
| IN          |               |           |          |      |        |
| TERNATIONAL |               |           |          |      |        |
| AIRPORT AND |               |           |          |      |        |
| PUBLISHED   |               |           |          |      |        |
| BY NOAA)    |               |           |          |      |        |
| FOR THE     |               |           |          |      |        |
| MONTHS THE  |               |           |          |      |        |
|             |               |           |          |      |        |
| APPLICABLE  |               |           |          |      |        |
| ET\'S WERE  |               |           |          |      |        |
| SPRAYED     |               |           |          |      |        |
| HAVE BEEN   |               |           |          |      |        |
| REVIEWED.   |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
|             |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 21)  |               |           |          |      |        |
|             |               |           |          |      |        |
| 6\.         |               |           |          |      |        |
| IDENTIFY    |               |           |          |      |        |
| THE         |               |           |          |      |        |
| LOCATION    |               |           |          |      |        |
| AND LOT     |               |           |          |      |        |
| NUMBERS OF  |               |           |          |      |        |
| THE TYPE OF |               |           |          |      |        |
| TIE-COAT    |               |           |          |      |        |
|             |               |           |          |      |        |
| USED DURING |               |           |          |      |        |
| FABRICATION |               |           |          |      |        |
| OF ET\'S    |               |           |          |      |        |
| 51-53 AT    |               |           |          |      |        |
| THE L02 AND |               |           |          |      |        |
| LH2         |               |           |          |      |        |
|             |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| FLANGE      |               |           |          |      |        |
| CLOSEOUTS,  |               |           |          |      |        |
| THE L02 PAL |               |           |          |      |        |
| RAMP,       |               |           |          |      |        |
| L0          |               |           |          |      |        |
| 2/INTERTANK |               |           |          |      |        |
| ICE         |               |           |          |      |        |
|             |               |           |          |      |        |
| FROST       |               |           |          |      |        |
| RAMPS, THE  |               |           |          |      |        |
| +/- Y BIPOD |               |           |          |      |        |
| RAMP, THE   |               |           |          |      |        |
| +Z AERO     |               |           |          |      |        |
| VENT        |               |           |          |      |        |
| I           |               |           |          |      |        |
| NSTALLATION |               |           |          |      |        |
|             |               |           |          |      |        |
| AND THE +/- |               |           |          |      |        |
| Y BATH TUB  |               |           |          |      |        |
| AREAS       |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| A MATRIX OF |               |           |          |      |        |
| THE         |               |           |          |      |        |
| TIE-COAT    |               |           |          |      |        |
| TYPES AND   |               |           |          |      |        |
| LOT NUMBERS |               |           |          |      |        |
|             |               |           |          |      |        |
| UTILIZED IN |               |           |          |      |        |
| THE         |               |           |          |      |        |
| FABRICATION |               |           |          |      |        |
| OF THE      |               |           |          |      |        |
| APPLICABLE  |               |           |          |      |        |
| ET\'S AT    |               |           |          |      |        |
| THE         |               |           |          |      |        |
| REQUESTED   |               |           |          |      |        |
|             |               |           |          |      |        |
| LOCATIONS   |               |           |          |      |        |
| HAS BEEN    |               |           |          |      |        |
| C           |               |           |          |      |        |
| ONSTRUCTED. |               |           |          |      |        |
| LAB REPORTS |               |           |          |      |        |
| AND TWO (2) |               |           |          |      |        |
| MRBS, THAT  |               |           |          |      |        |
|             |               |           |          |      |        |
| ACCEPTED    |               |           |          |      |        |
| LOTS AT     |               |           |          |      |        |
| RECEIVING   |               |           |          |      |        |
| WERE ALSO   |               |           |          |      |        |
| REVIEWED    |               |           |          |      |        |
| FOR         |               |           |          |      |        |
| POTENTIAL   |               |           |          |      |        |
| IMPACTS     |               |           |          |      |        |
|             |               |           |          |      |        |
| NONE WERE   |               |           |          |      |        |
| FOUND.      |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
|             |               |           |          |      |        |
| NUMBER 24)  |               |           |          |      |        |
|             |               |           |          |      |        |
| C. DESIGN   |               |           |          |      |        |
| ENGINEERING |               |           |          |      |        |
|             |               |           |          |      |        |
| 1\. OVERLAY |               |           |          |      |        |
| A CAD       |               |           |          |      |        |
| STRUCTURAL  |               |           |          |      |        |
| DRAWING OF  |               |           |          |      |        |
| THE ET ONTO |               |           |          |      |        |
| THE SCANNED |               |           |          |      |        |
|             |               |           |          |      |        |
| SEPARATION  |               |           |          |      |        |
| PHOTO.      |               |           |          |      |        |
| DETERMINE   |               |           |          |      |        |
| THE         |               |           |          |      |        |
| ORIENTATION |               |           |          |      |        |
| AND         |               |           |          |      |        |
| LOCATION OF |               |           |          |      |        |
|             |               |           |          |      |        |
| THE AREAS   |               |           |          |      |        |
| OF POSSIBLE |               |           |          |      |        |
| LOSS.       |               |           |          |      |        |
| REVIEW OF   |               |           |          |      |        |
| THE         |               |           |          |      |        |
| STRUCTURAL  |               |           |          |      |        |
| SUBSTRATE   |               |           |          |      |        |
|             |               |           |          |      |        |
| FOR ANY     |               |           |          |      |        |
| POTENTIAL   |               |           |          |      |        |
| C           |               |           |          |      |        |
| ONTRIBUTORS |               |           |          |      |        |
| TO THE LOSS |               |           |          |      |        |
| OF FOAM.    |               |           |          |      |        |
| OVERLAY     |               |           |          |      |        |
|             |               |           |          |      |        |
| THE ORBITER |               |           |          |      |        |
| TO THE ET   |               |           |          |      |        |
| SHOWING THE |               |           |          |      |        |
| R           |               |           |          |      |        |
| ELATIONSHIP |               |           |          |      |        |
| OF THE TILE |               |           |          |      |        |
|             |               |           |          |      |        |
| DAMAGE AND  |               |           |          |      |        |
| THE         |               |           |          |      |        |
| SUSPECTED   |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| AREAS       |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| THE         |               |           |          |      |        |
| OVERLAYS    |               |           |          |      |        |
| WERE        |               |           |          |      |        |
| CONSTRUCTED |               |           |          |      |        |
| AND         |               |           |          |      |        |
| ANALYZED.   |               |           |          |      |        |
| NO          |               |           |          |      |        |
|             |               |           |          |      |        |
| C           |               |           |          |      |        |
| ONTRIBUTING |               |           |          |      |        |
| INFORMATION |               |           |          |      |        |
| WAS         |               |           |          |      |        |
| DISCOVERED. |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
|             |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 2)   |               |           |          |      |        |
|             |               |           |          |      |        |
| 2\. PROVIDE |               |           |          |      |        |
| A PLUG PULL |               |           |          |      |        |
| ACCEPTANCE  |               |           |          |      |        |
| TEST LAYOUT |               |           |          |      |        |
| FOR THE     |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
|             |               |           |          |      |        |
| FOAM AND    |               |           |          |      |        |
| THE         |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| FLANGE      |               |           |          |      |        |
| CLOSEOUT    |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| THE         |               |           |          |      |        |
| REQUESTED   |               |           |          |      |        |
| LAYOUT HAS  |               |           |          |      |        |
| BEEN        |               |           |          |      |        |
| PROVIDED    |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
|             |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 3 &  |               |           |          |      |        |
| 4)          |               |           |          |      |        |
|             |               |           |          |      |        |
| 3\. PROVIDE |               |           |          |      |        |
| A SKETCH    |               |           |          |      |        |
| DENOTING    |               |           |          |      |        |
| THE TWO     |               |           |          |      |        |
| TONE        |               |           |          |      |        |
| CO          |               |           |          |      |        |
| NFIGURATION |               |           |          |      |        |
| (IF IT WERE |               |           |          |      |        |
|             |               |           |          |      |        |
| APPLICABLE) |               |           |          |      |        |
| WITH THE    |               |           |          |      |        |
| TWO SUSPECT |               |           |          |      |        |
| AREAS       |               |           |          |      |        |
| IDENTIFIED  |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| THE         |               |           |          |      |        |
| COMPOSITE   |               |           |          |      |        |
| SKETCH HAS  |               |           |          |      |        |
| BEEN        |               |           |          |      |        |
| FURNISHED   |               |           |          |      |        |
| AND         |               |           |          |      |        |
| PROVIDES    |               |           |          |      |        |
|             |               |           |          |      |        |
| AN OVERVIEW |               |           |          |      |        |
| OF THE      |               |           |          |      |        |
| FOLLOWING   |               |           |          |      |        |
| ITEMS, 2    |               |           |          |      |        |
| SUSPECT     |               |           |          |      |        |
| DIVOTS, +Z  |               |           |          |      |        |
| TWO TONE    |               |           |          |      |        |
|             |               |           |          |      |        |
| ENVELOPE, 8 |               |           |          |      |        |
| PLUG PULL   |               |           |          |      |        |
| LOCATIONS,  |               |           |          |      |        |
| BIPOD       |               |           |          |      |        |
| RAMPS,      |               |           |          |      |        |
| SAFETY MAT  |               |           |          |      |        |
| USAGE AND   |               |           |          |      |        |
| MARS        |               |           |          |      |        |
|             |               |           |          |      |        |
| T093234     |               |           |          |      |        |
| REPAIR.     |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
|             |               |           |          |      |        |
| NUMBER 20)  |               |           |          |      |        |
|             |               |           |          |      |        |
| 4\. PERFORM |               |           |          |      |        |
| A DETAIL    |               |           |          |      |        |
| REVIEW OF   |               |           |          |      |        |
| MARS T93234 |               |           |          |      |        |
| BATH TUB    |               |           |          |      |        |
| CREASES AND |               |           |          |      |        |
|             |               |           |          |      |        |
| T 100865    |               |           |          |      |        |
| L02 PAL     |               |           |          |      |        |
| RAMP LOW    |               |           |          |      |        |
| PLUGPULL    |               |           |          |      |        |
| VALUE       |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| A DETAILED  |               |           |          |      |        |
| REVIEW OF   |               |           |          |      |        |
| THE MARS    |               |           |          |      |        |
| DISCLOSED   |               |           |          |      |        |
| NO DEBRIS   |               |           |          |      |        |
|             |               |           |          |      |        |
| CONCERNS.   |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER      |               |           |          |      |        |
|             |               |           |          |      |        |
| 23\)        |               |           |          |      |        |
|             |               |           |          |      |        |
| D. SYSTEM   |               |           |          |      |        |
| ENGINEERING |               |           |          |      |        |
|             |               |           |          |      |        |
| 1\. REVIEW  |               |           |          |      |        |
| THE FLIGHT  |               |           |          |      |        |
| TRAJECTORY  |               |           |          |      |        |
| OF ET-52    |               |           |          |      |        |
| FOR ANY     |               |           |          |      |        |
| UNUSUAL     |               |           |          |      |        |
|             |               |           |          |      |        |
| P           |               |           |          |      |        |
| ERTURBATION |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| POST FLIGHT |               |           |          |      |        |
| RE          |               |           |          |      |        |
| CONSTRUCTED |               |           |          |      |        |
| TRAJECTORY  |               |           |          |      |        |
| PARAMETER   |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPARISONS |               |           |          |      |        |
| FOR STS-42  |               |           |          |      |        |
| (28.5       |               |           |          |      |        |
| DEGREES)    |               |           |          |      |        |
| AND STS-44  |               |           |          |      |        |
| (57         |               |           |          |      |        |
| DEGREES)    |               |           |          |      |        |
| REVEALED    |               |           |          |      |        |
|             |               |           |          |      |        |
| NO UNUSUAL  |               |           |          |      |        |
| OR          |               |           |          |      |        |
| UNEXPECTED  |               |           |          |      |        |
| CONDITIONS  |               |           |          |      |        |
| OR          |               |           |          |      |        |
| ANOMALIES.  |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
|             |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 7)   |               |           |          |      |        |
|             |               |           |          |      |        |
| 2\.         |               |           |          |      |        |
| DETERMINE   |               |           |          |      |        |
| ALL         |               |           |          |      |        |
| T           |               |           |          |      |        |
| RAJECTORIES |               |           |          |      |        |
| OF FOAM     |               |           |          |      |        |
| COMING FROM |               |           |          |      |        |
| SUSPECT     |               |           |          |      |        |
| LOCATION    |               |           |          |      |        |
|             |               |           |          |      |        |
| AND DEFINE  |               |           |          |      |        |
| THEIR       |               |           |          |      |        |
| KINETIC     |               |           |          |      |        |
| ENERGIES    |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| DEBRIS THAT |               |           |          |      |        |
| DAMAGED THE |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| NOSE TILE   |               |           |          |      |        |
| DID NOT     |               |           |          |      |        |
|             |               |           |          |      |        |
| ORIGINATE   |               |           |          |      |        |
| FROM THE    |               |           |          |      |        |
| SUSPECTED   |               |           |          |      |        |
| TPS ANOMALY |               |           |          |      |        |
| LOCATION.   |               |           |          |      |        |
| ALTHOUGH    |               |           |          |      |        |
| THERE IS NO |               |           |          |      |        |
|             |               |           |          |      |        |
| OBVIOUS     |               |           |          |      |        |
| FLOW        |               |           |          |      |        |
| MECHANISM   |               |           |          |      |        |
| AT THE      |               |           |          |      |        |
| SUSPECT TPS |               |           |          |      |        |
| ANOMALY     |               |           |          |      |        |
| LOCATION TO |               |           |          |      |        |
| TRANSPORT   |               |           |          |      |        |
|             |               |           |          |      |        |
| DEBRIS TO   |               |           |          |      |        |
| THE         |               |           |          |      |        |
| ORBITER,    |               |           |          |      |        |
| THERE IS A  |               |           |          |      |        |
| LOW         |               |           |          |      |        |
| PROBABILITY |               |           |          |      |        |
| THAT SMALL  |               |           |          |      |        |
| SIZE DEBRIS |               |           |          |      |        |
|             |               |           |          |      |        |
| AT HIGH     |               |           |          |      |        |
| DYNAMIC     |               |           |          |      |        |
| PRESSURE    |               |           |          |      |        |
| AND LARGER  |               |           |          |      |        |
| SIZE DEBRIS |               |           |          |      |        |
| EARLY/LATE  |               |           |          |      |        |
| IN FLIGHT   |               |           |          |      |        |
|             |               |           |          |      |        |
| FROM THE    |               |           |          |      |        |
| SUSPECT TPS |               |           |          |      |        |
| ANOMALY     |               |           |          |      |        |
| LOCATION    |               |           |          |      |        |
| COULD       |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| TILE AFT OF |               |           |          |      |        |
|             |               |           |          |      |        |
| THE ORBITER |               |           |          |      |        |
| NOSE.       |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
|             |               |           |          |      |        |
| NUMBER 14)  |               |           |          |      |        |
|             |               |           |          |      |        |
| 3\.         |               |           |          |      |        |
| DETERMINE   |               |           |          |      |        |
| THE MOST    |               |           |          |      |        |
| PROBABLE    |               |           |          |      |        |
| DEBRIS      |               |           |          |      |        |
| SOURCE      |               |           |          |      |        |
| DEBOND      |               |           |          |      |        |
| IMPACT      |               |           |          |      |        |
|             |               |           |          |      |        |
| SCENARIO    |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| AN          |               |           |          |      |        |
| IN          |               |           |          |      |        |
| VESTIGATION |               |           |          |      |        |
| BY MAF\'S   |               |           |          |      |        |
| SYSTEMS     |               |           |          |      |        |
| ANALYSIS    |               |           |          |      |        |
| GROUP       |               |           |          |      |        |
|             |               |           |          |      |        |
| DISCLOSED   |               |           |          |      |        |
| THE MOST    |               |           |          |      |        |
| PROBABLE    |               |           |          |      |        |
| DEBRIS      |               |           |          |      |        |
| SOURCE FOR  |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| TILE DAMAGE |               |           |          |      |        |
| MAY BE      |               |           |          |      |        |
|             |               |           |          |      |        |
| ATTRIBUTED  |               |           |          |      |        |
| TO SMALL    |               |           |          |      |        |
| SIZE (1\"   |               |           |          |      |        |
| CUBE OR     |               |           |          |      |        |
| SMALLER)    |               |           |          |      |        |
| DEBRIS      |               |           |          |      |        |
| PARTICLES   |               |           |          |      |        |
|             |               |           |          |      |        |
| ORIGINATING |               |           |          |      |        |
| AT THE      |               |           |          |      |        |
| FORWARD END |               |           |          |      |        |
| OF          |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| AND         |               |           |          |      |        |
| PROBABLY    |               |           |          |      |        |
| OCCURRING   |               |           |          |      |        |
|             |               |           |          |      |        |
| EITHER      |               |           |          |      |        |
| EARLY IN    |               |           |          |      |        |
| FLIGHT OR   |               |           |          |      |        |
| AT SRB      |               |           |          |      |        |
| SEPARATION. |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
|             |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 15)  |               |           |          |      |        |
|             |               |           |          |      |        |
| 4\.         |               |           |          |      |        |
| DETERMINE   |               |           |          |      |        |
| IF SRB NOSE |               |           |          |      |        |
| CONE DEBRIS |               |           |          |      |        |
| OR ET       |               |           |          |      |        |
| DEBRIS      |               |           |          |      |        |
| COULD CAUSE |               |           |          |      |        |
| THE         |               |           |          |      |        |
|             |               |           |          |      |        |
| SURFACE     |               |           |          |      |        |
| DIVOTS IN   |               |           |          |      |        |
| THE         |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| FOAM        |               |           |          |      |        |
| ACREAGE     |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 3/20/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| ANALYSIS    |               |           |          |      |        |
| DISCLOSED   |               |           |          |      |        |
| THAT DEBRIS |               |           |          |      |        |
| FROM THE    |               |           |          |      |        |
| SRB COULD   |               |           |          |      |        |
|             |               |           |          |      |        |
| IMPACT THE  |               |           |          |      |        |
| SUSPECT TPS |               |           |          |      |        |
| ANOMALY     |               |           |          |      |        |
| LOCATION    |               |           |          |      |        |
| BUT WITH    |               |           |          |      |        |
| I           |               |           |          |      |        |
| NSUFFICIENT |               |           |          |      |        |
| KINETIC     |               |           |          |      |        |
|             |               |           |          |      |        |
| ENERGY TO   |               |           |          |      |        |
| RESULT IN   |               |           |          |      |        |
| TPS DIVOTS. |               |           |          |      |        |
| DEBRIS FROM |               |           |          |      |        |
| THE ET NOSE |               |           |          |      |        |
| AREA WILL   |               |           |          |      |        |
| NOT         |               |           |          |      |        |
|             |               |           |          |      |        |
| IMPACT THE  |               |           |          |      |        |
| INTERTANK.  |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION      |               |           |          |      |        |
|             |               |           |          |      |        |
| ITEM NUMBER |               |           |          |      |        |
| 25)         |               |           |          |      |        |
|             |               |           |          |      |        |
| E. AMT      |               |           |          |      |        |
|             |               |           |          |      |        |
| 1\.         |               |           |          |      |        |
| CONSTRUCT A |               |           |          |      |        |
| HISTORY OF  |               |           |          |      |        |
| THE TWO GUN |               |           |          |      |        |
| SPRAY       |               |           |          |      |        |
| DEVELOPMENT |               |           |          |      |        |
| AND         |               |           |          |      |        |
|             |               |           |          |      |        |
| VALIDATION. |               |           |          |      |        |
| DOCUMENT    |               |           |          |      |        |
| ANY         |               |           |          |      |        |
| ANOMALIES   |               |           |          |      |        |
| DURING      |               |           |          |      |        |
| BUI         |               |           |          |      |        |
| LD/CHECKOUT |               |           |          |      |        |
|             |               |           |          |      |        |
| AND THEIR   |               |           |          |      |        |
| POTENTIAL   |               |           |          |      |        |
| IMPLICATION |               |           |          |      |        |
| TO THE      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| THE HISTORY |               |           |          |      |        |
| HAS BEEN    |               |           |          |      |        |
| DOCUMENTED  |               |           |          |      |        |
| WITH NO     |               |           |          |      |        |
| ADVERSE     |               |           |          |      |        |
|             |               |           |          |      |        |
| EFFECT TO   |               |           |          |      |        |
| THE ORBITER |               |           |          |      |        |
| DISCOVERED  |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
|             |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 5)   |               |           |          |      |        |
|             |               |           |          |      |        |
| 2\. PROVIDE |               |           |          |      |        |
| A CELL      |               |           |          |      |        |
| HISTORY FOR |               |           |          |      |        |
| THE ETS     |               |           |          |      |        |
| 51-53       |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| CPR FOAM    |               |           |          |      |        |
|             |               |           |          |      |        |
| APPLICATION |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| ET\'S 51,   |               |           |          |      |        |
| 52, 53, AND |               |           |          |      |        |
| 55 WERE     |               |           |          |      |        |
| SPRAYED     |               |           |          |      |        |
| WITH THE    |               |           |          |      |        |
| TWO         |               |           |          |      |        |
|             |               |           |          |      |        |
| GUN SPRAY   |               |           |          |      |        |
| PROCESS IN  |               |           |          |      |        |
| CELL \"G\". |               |           |          |      |        |
| ET\'S 54    |               |           |          |      |        |
| AND 56 WERE |               |           |          |      |        |
| SPRAYED     |               |           |          |      |        |
| WITH THE    |               |           |          |      |        |
| TWO         |               |           |          |      |        |
|             |               |           |          |      |        |
| GUN SPRAY   |               |           |          |      |        |
| PROCESS IN  |               |           |          |      |        |
| CELL \"H\". |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
|             |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 12)  |               |           |          |      |        |
|             |               |           |          |      |        |
| 3\. REVIEW  |               |           |          |      |        |
| AND         |               |           |          |      |        |
| SUMMARIZE   |               |           |          |      |        |
| THE FLOW    |               |           |          |      |        |
| METER DATA  |               |           |          |      |        |
| FOR ET-52   |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
|             |               |           |          |      |        |
| FOAM SPRAY  |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 3/20/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| THE FLOW    |               |           |          |      |        |
| METER DATA  |               |           |          |      |        |
| WAS         |               |           |          |      |        |
| SUMMARIZED  |               |           |          |      |        |
| AND         |               |           |          |      |        |
| REVIEWED    |               |           |          |      |        |
|             |               |           |          |      |        |
| NO          |               |           |          |      |        |
| DETRIMENTAL |               |           |          |      |        |
| CONDITIONS  |               |           |          |      |        |
| WERE        |               |           |          |      |        |
| DETECTED.   |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
|             |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 28)  |               |           |          |      |        |
|             |               |           |          |      |        |
| F. STRESS   |               |           |          |      |        |
| ENGINEERING |               |           |          |      |        |
|             |               |           |          |      |        |
| 1\.         |               |           |          |      |        |
| DETERMINE   |               |           |          |      |        |
| IF          |               |           |          |      |        |
| STRUCTURAL  |               |           |          |      |        |
| FLEXURE     |               |           |          |      |        |
| FROM        |               |           |          |      |        |
| THERMALLY   |               |           |          |      |        |
| INDUCED     |               |           |          |      |        |
|             |               |           |          |      |        |
| HOOP        |               |           |          |      |        |
| COMPRESSION |               |           |          |      |        |
| AND         |               |           |          |      |        |
| STRUCTURAL  |               |           |          |      |        |
| DISC        |               |           |          |      |        |
| ONTINUITIES |               |           |          |      |        |
| MAY RESULT  |               |           |          |      |        |
| IN          |               |           |          |      |        |
|             |               |           |          |      |        |
| DIVOTS      |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 2/25/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| STRESS      |               |           |          |      |        |
| ENGINEERING |               |           |          |      |        |
| HAS         |               |           |          |      |        |
| REVIEWED    |               |           |          |      |        |
| THE         |               |           |          |      |        |
| STRUCTURAL  |               |           |          |      |        |
|             |               |           |          |      |        |
| FLEXURE IN  |               |           |          |      |        |
| THE AREA OF |               |           |          |      |        |
| THE         |               |           |          |      |        |
| SUSPECTED   |               |           |          |      |        |
| DIVOTS ON   |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| (STATIONS   |               |           |          |      |        |
| 1062        |               |           |          |      |        |
|             |               |           |          |      |        |
| AND 1081 AT |               |           |          |      |        |
| 55.1        |               |           |          |      |        |
| DEGREES AND |               |           |          |      |        |
| 45.4        |               |           |          |      |        |
| DEGREES OFF |               |           |          |      |        |
| +Z TOWARDS  |               |           |          |      |        |
| -Y          |               |           |          |      |        |
|             |               |           |          |      |        |
| RES         |               |           |          |      |        |
| PECTIVELY). |               |           |          |      |        |
| ANALYSIS    |               |           |          |      |        |
| DISCLOSED   |               |           |          |      |        |
| THAT THERE  |               |           |          |      |        |
| IS NO       |               |           |          |      |        |
| SIGNIFICANT |               |           |          |      |        |
| THERMAL     |               |           |          |      |        |
|             |               |           |          |      |        |
| INDUCED     |               |           |          |      |        |
| HOOP        |               |           |          |      |        |
| COMPRESSION |               |           |          |      |        |
| IN THE AREA |               |           |          |      |        |
| OF SUSPECT  |               |           |          |      |        |
| DIVOTS.     |               |           |          |      |        |
| MECHANICAL  |               |           |          |      |        |
|             |               |           |          |      |        |
| DISC        |               |           |          |      |        |
| ONTINUITIES |               |           |          |      |        |
| IN THE      |               |           |          |      |        |
| STRUCTURAL  |               |           |          |      |        |
| CO          |               |           |          |      |        |
| NFIGURATION |               |           |          |      |        |
| TYPICALLY   |               |           |          |      |        |
| OCCUR ONLY  |               |           |          |      |        |
| IN          |               |           |          |      |        |
|             |               |           |          |      |        |
| END BAYS,   |               |           |          |      |        |
| AROUND      |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| PENETRATION |               |           |          |      |        |
| AND ACROSS  |               |           |          |      |        |
| PANEL       |               |           |          |      |        |
| SPLICES,    |               |           |          |      |        |
| NONE OF     |               |           |          |      |        |
|             |               |           |          |      |        |
| WHICH EXIST |               |           |          |      |        |
| IN THE AREA |               |           |          |      |        |
| OF SUSPECT  |               |           |          |      |        |
| DIVOT.      |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
|             |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 13)  |               |           |          |      |        |
|             |               |           |          |      |        |
| G. MSFC     |               |           |          |      |        |
| OPERATIONS  |               |           |          |      |        |
|             |               |           |          |      |        |
| 1\. INSPECT |               |           |          |      |        |
| THE SRB     |               |           |          |      |        |
| \"BEANIE    |               |           |          |      |        |
| CAP\" FOR   |               |           |          |      |        |
| ANY UNUSUAL |               |           |          |      |        |
| CONDITIONS  |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 3/20/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| INSPECTION  |               |           |          |      |        |
| REVEALED NO |               |           |          |      |        |
| UNUSUAL     |               |           |          |      |        |
| CONDITIONS  |               |           |          |      |        |
|             |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 22)  |               |           |          |      |        |
|             |               |           |          |      |        |
| H. KSC      |               |           |          |      |        |
| OPERATIONS  |               |           |          |      |        |
|             |               |           |          |      |        |
| 1\. REVIEW  |               |           |          |      |        |
| KSC         |               |           |          |      |        |
| PROCESSING  |               |           |          |      |        |
| OF ET-52    |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| AND         |               |           |          |      |        |
| DOCUMENT    |               |           |          |      |        |
| ANY         |               |           |          |      |        |
|             |               |           |          |      |        |
| CONDITIONS  |               |           |          |      |        |
| THAT COULD  |               |           |          |      |        |
| CONTRIBUTE  |               |           |          |      |        |
| TO THE      |               |           |          |      |        |
| INTERTANK   |               |           |          |      |        |
| ANOMALY     |               |           |          |      |        |
|             |               |           |          |      |        |
| COMPLETE:   |               |           |          |      |        |
| 3/20/92     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| STATEMENT:  |               |           |          |      |        |
| NO          |               |           |          |      |        |
| ANOMALOUS   |               |           |          |      |        |
| CONDITIONS  |               |           |          |      |        |
| WERE        |               |           |          |      |        |
| DETECTED.   |               |           |          |      |        |
| (REFERENCE  |               |           |          |      |        |
|             |               |           |          |      |        |
| STS-42      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
| REVIEW      |               |           |          |      |        |
| ACTION ITEM |               |           |          |      |        |
| NUMBER 26)  |               |           |          |      |        |
|             |               |           |          |      |        |
| TASK II.    |               |           |          |      |        |
| CORRECTIVE  |               |           |          |      |        |
| ACTION      |               |           |          |      |        |
|             |               |           |          |      |        |
| THERE IS NO |               |           |          |      |        |
| IMMEDIATE   |               |           |          |      |        |
| OR PLANNED  |               |           |          |      |        |
| CORRECTIVE  |               |           |          |      |        |
| ACTION.     |               |           |          |      |        |
| THIS IS AN  |               |           |          |      |        |
|             |               |           |          |      |        |
| EXPLAINED   |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| CAPS,       |               |           |          |      |        |
| DOCUMENTING |               |           |          |      |        |
| AN          |               |           |          |      |        |
| UNEXPLAINED |               |           |          |      |        |
| ANOMALY     |               |           |          |      |        |
| THAT IS     |               |           |          |      |        |
|             |               |           |          |      |        |
| CLASSIFIED  |               |           |          |      |        |
| AS AN       |               |           |          |      |        |
| ISOLATED    |               |           |          |      |        |
| INCIDENT    |               |           |          |      |        |
|             |               |           |          |      |        |
| TASK III.   |               |           |          |      |        |
| CLEARANCE   |               |           |          |      |        |
| OF          |               |           |          |      |        |
| EF          |               |           |          |      |        |
| FECTIVITIES |               |           |          |      |        |
|             |               |           |          |      |        |
| ET 43       |               |           |          |      |        |
| THROUGH 45  |               |           |          |      |        |
| AND 48      |               |           |          |      |        |
| THROUGH 50  |               |           |          |      |        |
| ARE CLEARED |               |           |          |      |        |
| FOR FLIGHT  |               |           |          |      |        |
| SINCE THESE |               |           |          |      |        |
|             |               |           |          |      |        |
| ET\'S WERE  |               |           |          |      |        |
| M           |               |           |          |      |        |
| ANUFACTURED |               |           |          |      |        |
| UTILIZING   |               |           |          |      |        |
| THE         |               |           |          |      |        |
| TWO-TONE    |               |           |          |      |        |
| SOFI        |               |           |          |      |        |
| APPLICATION |               |           |          |      |        |
| WITH        |               |           |          |      |        |
|             |               |           |          |      |        |
| EIGHT       |               |           |          |      |        |
| -OF-AN-INCH |               |           |          |      |        |
| DIAMETER    |               |           |          |      |        |
| VENT HOLES  |               |           |          |      |        |
|             |               |           |          |      |        |
| ET-51,      |               |           |          |      |        |
| ET-54 AND   |               |           |          |      |        |
| SUBSEQUENT  |               |           |          |      |        |
| ARE CLEARED |               |           |          |      |        |
| FOR FLIGHT. |               |           |          |      |        |
| THE CAUSE   |               |           |          |      |        |
| OF THE      |               |           |          |      |        |
|             |               |           |          |      |        |
| ANOMALY     |               |           |          |      |        |
| COULD NOT   |               |           |          |      |        |
| BE          |               |           |          |      |        |
| ASCERTAINED |               |           |          |      |        |
| BY          |               |           |          |      |        |
| EXTENSIVE   |               |           |          |      |        |
| TESTING AND |               |           |          |      |        |
| ANALYSIS    |               |           |          |      |        |
|             |               |           |          |      |        |
| LOSS OF     |               |           |          |      |        |
| THIS TYPE   |               |           |          |      |        |
| OF FOAM (IF |               |           |          |      |        |
| IT OCCURS)  |               |           |          |      |        |
| IS NOT A    |               |           |          |      |        |
| SAFETY OF   |               |           |          |      |        |
| FLIGHT      |               |           |          |      |        |
|             |               |           |          |      |        |
| CONCERN BUT |               |           |          |      |        |
| ONE OF      |               |           |          |      |        |
| ORBITER     |               |           |          |      |        |
| TILE        |               |           |          |      |        |
| MAINTENANCE |               |           |          |      |        |
|             |               |           |          |      |        |
| TASK IV.    |               |           |          |      |        |
| CAUSE AND   |               |           |          |      |        |
| CORRECTIVE  |               |           |          |      |        |
| ACTION      |               |           |          |      |        |
| SUMMARY     |               |           |          |      |        |
|             |               |           |          |      |        |
| THIS IS AN  |               |           |          |      |        |
| EXPLAINED   |               |           |          |      |        |
| CLOSURE     |               |           |          |      |        |
| CAPS        |               |           |          |      |        |
|             |               |           |          |      |        |
| FAULT TREE  |               |           |          |      |        |
| ANALYSIS    |               |           |          |      |        |
| WAS USED TO |               |           |          |      |        |
| IDENTIFY    |               |           |          |      |        |
| POSSIBLE    |               |           |          |      |        |
| CAUSES OF   |               |           |          |      |        |
| DIVOTS. THE |               |           |          |      |        |
|             |               |           |          |      |        |
| MAJOR AREAS |               |           |          |      |        |
| INCLUDED IN |               |           |          |      |        |
| THE FAULT   |               |           |          |      |        |
| TREE WERE:  |               |           |          |      |        |
|             |               |           |          |      |        |
| \-          |               |           |          |      |        |
| EXCESSIVE   |               |           |          |      |        |
| FLIGHT      |               |           |          |      |        |
| E           |               |           |          |      |        |
| NVIRONMENTS |               |           |          |      |        |
|             |               |           |          |      |        |
| \-          |               |           |          |      |        |
| MECHANICAL  |               |           |          |      |        |
| DAMAGE      |               |           |          |      |        |
|             |               |           |          |      |        |
| \-          |               |           |          |      |        |
| PROCESSING  |               |           |          |      |        |
| OR ASSEMBLY |               |           |          |      |        |
| ANOMALY     |               |           |          |      |        |
|             |               |           |          |      |        |
| \- OTHER    |               |           |          |      |        |
| CAUSES -    |               |           |          |      |        |
| MATERIAL    |               |           |          |      |        |
| AGE, BSM    |               |           |          |      |        |
| I           |               |           |          |      |        |
| MPINGEMENT, |               |           |          |      |        |
| FLUID SPILL |               |           |          |      |        |
|             |               |           |          |      |        |
| NO CREDIBLE |               |           |          |      |        |
| EVIDENCE    |               |           |          |      |        |
| FOR A       |               |           |          |      |        |
| POSSIBLE    |               |           |          |      |        |
| CAUSE WAS   |               |           |          |      |        |
| FOUND IN    |               |           |          |      |        |
| ANY OF THE  |               |           |          |      |        |
| ABOVE       |               |           |          |      |        |
|             |               |           |          |      |        |
| NINE FLIGHT |               |           |          |      |        |
| TILES AND   |               |           |          |      |        |
| ONE CONTROL |               |           |          |      |        |
| TILE WERE   |               |           |          |      |        |
| ANALYZED AT |               |           |          |      |        |
| MSFC        |               |           |          |      |        |
| MATERIALS & |               |           |          |      |        |
|             |               |           |          |      |        |
| PROCESSES   |               |           |          |      |        |
| LABORATORY. |               |           |          |      |        |
| NO ET OR    |               |           |          |      |        |
| SRB TPS     |               |           |          |      |        |
| MATERIALS   |               |           |          |      |        |
| WERE        |               |           |          |      |        |
| IDENTIFIED  |               |           |          |      |        |
| IN THE      |               |           |          |      |        |
|             |               |           |          |      |        |
| TILES       |               |           |          |      |        |
|             |               |           |          |      |        |
| THE CAUSE   |               |           |          |      |        |
| OF THE      |               |           |          |      |        |
| ANOMALY WAS |               |           |          |      |        |
| NOT         |               |           |          |      |        |
| DETERMINED  |               |           |          |      |        |
| AND IS      |               |           |          |      |        |
| CLASSIFIED  |               |           |          |      |        |
| AS AN       |               |           |          |      |        |
|             |               |           |          |      |        |
| ISOLATED    |               |           |          |      |        |
| INCIDENT    |               |           |          |      |        |
|             |               |           |          |      |        |
| THERE IS NO |               |           |          |      |        |
| IMMEDIATE   |               |           |          |      |        |
| OR PLANNED  |               |           |          |      |        |
| CORRECTIVE  |               |           |          |      |        |
| ACTION      |               |           |          |      |        |
|             |               |           |          |      |        |
| \*\*\*      |               |           |          |      |        |
| \*\*\*\*\*\ |               |           |          |      |        |
| *\*\*\*\*\* |               |           |          |      |        |
| \*\*\*\*\*\ |               |           |          |      |        |
| *\*\*\*\*\* |               |           |          |      |        |
| \*\*\*\*\*\ |               |           |          |      |        |
| *\*\*\*\*\* |               |           |          |      |        |
| \*\*\*\*\*\ |               |           |          |      |        |
| *\*\*\*\*\* |               |           |          |      |        |
| \*\*\*\*\*\ |               |           |          |      |        |
| *\*\*\*\*\* |               |           |          |      |        |
| \*\*\*\*\*\ |               |           |          |      |        |
| *\*\*\*\*\* |               |           |          |      |        |
|             |               |           |          |      |        |
| 2/24/92 -   |               |           |          |      |        |
| PAC NOTE:   |               |           |          |      |        |
| DEFERRAL    |               |           |          |      |        |
| RATIONALE   |               |           |          |      |        |
|             |               |           |          |      |        |
| \*\*\*      |               |           |          |      |        |
| \*\*\*\*\*\ |               |           |          |      |        |
| *\*\*\*\*\* |               |           |          |      |        |
| \*\*\*\*\*\ |               |           |          |      |        |
| *\*\*\*\*\* |               |           |          |      |        |
| \*\*\*\*\*\ |               |           |          |      |        |
| *\*\*\*\*\* |               |           |          |      |        |
| \*\*\*\*\*\ |               |           |          |      |        |
| *\*\*\*\*\* |               |           |          |      |        |
| \*\*\*\*\*\ |               |           |          |      |        |
| *\*\*\*\*\* |               |           |          |      |        |
| \*\*\*\*\*\ |               |           |          |      |        |
| *\*\*\*\*\* |               |           |          |      |        |
|             |               |           |          |      |        |
| DEFERRAL    |               |           |          |      |        |
| RATIONALE:  |               |           |          |      |        |
| THIS        |               |           |          |      |        |
| PROBLEM HAS |               |           |          |      |        |
| BEEN        |               |           |          |      |        |
| DEFERRED    |               |           |          |      |        |
| FOR ET\'S   |               |           |          |      |        |
| 43-45 AND   |               |           |          |      |        |
|             |               |           |          |      |        |
| ET\'S 48-50 |               |           |          |      |        |
| PER NSTS    |               |           |          |      |        |
| 08126,      |               |           |          |      |        |
| REVISION D, |               |           |          |      |        |
| PARAGRAPH   |               |           |          |      |        |
| 3.3.10.1,   |               |           |          |      |        |
| ITEM A      |               |           |          |      |        |
| WHICH       |               |           |          |      |        |
|             |               |           |          |      |        |
| STATES      |               |           |          |      |        |
| \"THE       |               |           |          |      |        |
| PROBLEM IS  |               |           |          |      |        |
| NOT         |               |           |          |      |        |
| APPLICABLE  |               |           |          |      |        |
| TO THE      |               |           |          |      |        |
| FLIGHT(S)   |               |           |          |      |        |
| (SYSTEM NOT |               |           |          |      |        |
|             |               |           |          |      |        |
| INSTALLED   |               |           |          |      |        |
| OR USED ON  |               |           |          |      |        |
| THE         |               |           |          |      |        |
| FLIGHT).\"  |               |           |          |      |        |
|             |               |           |          |      |        |
| APPROVAL:   |               |           |          |      |        |
| \_\_\       |               |           |          |      |        |
| _\_\_GERALD |               |           |          |      |        |
| C. LADNER   |               |           |          |      |        |
| (SIGNED)\_  |               |           |          |      |        |
| \_\_\_\_\_\ |               |           |          |      |        |
| _\_\_\_\_\_ |               |           |          |      |        |
| DATE:       |               |           |          |      |        |
| \_\_        |               |           |          |      |        |
| 2/27/92\_\_ |               |           |          |      |        |
|             |               |           |          |      |        |
| GERALD C.   |               |           |          |      |        |
| LADNER      |               |           |          |      |        |
|             |               |           |          |      |        |
| ET PROJECT  |               |           |          |      |        |
| MANAGER     |               |           |          |      |        |
+-------------+---------------+-----------+----------+------+--------+

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

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

  ----------------- ----------------- ---------------- ------------ ----------- ------------
  **MSFC Report#**\ **IFA#**\         **Contractor     **JSC#**\    **KSC#**\   **EICN#**\
  A14467            STS-42-T-001      RPT#**\          \--          \--         \--
                                      T-062                                     

  **Asmnt Part#**\  **Asmnt Part      **Asmnt                                   
  80901006000-059   Name**\           Serial/Lot#**\                            
                    ET COMPLETE       ET-52                                     

  **HCRIT CD**\     **FCRIT CD**\     **CAUSE CD**\    **FAIL                   
  \--               1                 U - UNKNOWN      MODE**\                  
                                                       MSI -                    
                                                       INSULATION               

  **Asmnt FMEA**\   **Asmnt FM**\     **FMEA CSE**\    **FMEA                   
  5.6.2.1           1                 AA               SCSE**\                  
                                                       N/A                      

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