# SDR SWAA2022071312457

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 27, 2022
- Submitted: July 13, 2022
- Operation: Air carrier
- Aircraft: [N949WN](https://openairdocs.org/aircraft/N949WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36663
- Aircraft time: 38,976 hours, 23,480 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/SWAA2022071312457

## Discrepancy

RT STA 663 VAPOR BARRIER IS CRACKED / [01] PERFORMED VISUAL INSPECTION AND TAP TEST INSPECTION AT RT VAPOR BARRIER FOUND 3 CRACKS OF 14''; 2'' AND 1'' THE LENGTH. REF B737-700 NDT PART 1 51-05-01.;[02] REMOVED THE DAMAGED PLIES AND MADE STOP DRILL AT THE CRACKS END AT RT VAPOR BARRIER. REF B737-700 SRM 57-10-10-2R-2 PARAGRAPH 6 B AND SRM 51-70-04-2R-10 REPAIR 10 PARAGRAPH 4 B.;[03] VERIFIED STEPS 1 AND 2.<BR>OK FOR DRY OUT.;[04] PERFORMED DRY OUT AT REPAIR AREA ON RT VAPOR BARRIER. REF B737-700 SRM 57-10-10-2R-2 PARAGRAPH 6 AND SRM 51-70-04-2R-10 REPAIR 10 PARAGRAPH 4 B.;[05] VERIFIED STEP #4; DRY OUT ACCOMPLISHED.;[06] OK TO APPLY REPAIR.;[07] APPLIED THE FABRIC REPAIR PLIES ON DAMAGED AREA AT RT VAPOR BARRIER. REF B737-700 SRM 57-10-10-2R-2 PARAGRAPH 6 AND SRM 51-70-04-2R-10 REPAIR 10 PARAGRAPH 4. MATERIAL USED FABRIC REPAIR PO#:1690463 AND LAMINATING RESIN PO#: 1753794.;[[12] APPLIED THE FABRIC REPAIR PLIES ON DAMAGED AREA AT RT VAPOR BARRIER. REF B737-700 SRM 57-10-10-2R-2 PARAGRAPH 6 AND SRM 51-70-04-2R-10 REPAIR 10 PARAGRAPH 4. MATERIAL USED FABRIC REPAIR PO#:1690463 AND LAMINATING RESIN PO#: 1753794.

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