# SDR SWAA2021101227976

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 8, 2021
- Submitted: October 12, 2021
- Operation: Air carrier
- Aircraft: [N7748A](https://openairdocs.org/aircraft/N7748A), registered now
- Make and model: Boeing 737-7BD
- Registry model: [Boeing 737-7BD](https://openairdocs.org/model/boeing-737-7bd) (OpenAirDocs)
- Aircraft serial: 36399
- Aircraft time: 45,576 hours, 23,036 cycles
- System (JASC): [5710 · Wing Main, Frame Structure](https://openairdocs.org/jasc/5710)
- Part: Vapor Barrier
- Condition: Cracked
- Location: L/H Mlg W/W
- 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/SWAA2021101227976

## Discrepancy

FOUND 14' DIAGONAL CRACK IN VAPOR BARRIER LEFT W/W; FWD SPAR. ; FOUND 14' DIAGONAL CRACK IN VAPOR BARRIER LEFT WW; FWD SPAR. LBL 33.5; 4.5 DOWN FROM UPPER WEB TO LBL38..5 AND 5.25' UP FROM BOTTOM. / [01] PERFORMED SRM 57-10-10-1A-2 PARAGRAPH 2(C)(4)(A) STOP DRILL AND SEAL - DVI EVERY 1200 CYC - INTERIM REPAIR

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