# SDR SWAA2022032482787

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2022
- Submitted: March 24, 2022
- Operation: Air carrier
- Aircraft: [N488WN](https://openairdocs.org/aircraft/N488WN), registered now
- Make and model: Boeing 737*
- Aircraft serial: 33853
- Aircraft time: 58,784 hours, 34,734 cycles
- System (JASC): [5710 · Wing Main, Frame Structure](https://openairdocs.org/jasc/5710)
- Part: Vapor Barrier
- Condition: Cracked
- Location: Center Wing
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2022032482787

## Discrepancy

WHILE ACCOMPLISHING CHORD REPAIR AT STA 663 RBL 39; FOUND VAPOR BARRIER BULKHEAD CRACKED / [01] EVALUATED RBL VAPOR BARRIER AND FOUND A CRACK OF 16' AT RBL 39. AND A CRACK OF 3' AT RBL 20. FOUND TO BE REPAIRABLE. IAW B737-700 SRM 57-10-10-2R-2 PAR 1A & NOTE. CLEAN AND PREP FOR REPAIR. IAW B737-700 SRM 51-70-04-2R-10 PAR 4 A-D REV 75. VERIFIED MATERIALS. IAW B737-700 SRM 51-70-04-2R-0 TABLE 203 BMS 8-301 (A117179); BMS 9-3 (A10273). NEED OK TO BOND.;[02] VERIFIED STEP 1; OK GIVEN TO BOND;[03] BONDED REPAIR PLIES. IAW B737-700 SRM 51-70-04-2R-10 PAR 4E-G REV 75. AAR OVEN BO-O6 5-15-22 150DEG 3HRS.;[04] VERIFIED STEP 3;[05] OK TO APPLY FINISH;[06] APPLIED FINISH TO REPAIR AREA IAW BOEING DWG 111A1141-4 REV B;[07] STEP 6 OK;[08] C/W;[09] WEB INSTALLED ON NR TTG8Q00B9AQQ

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