# SDR AALA202604304797

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 24, 2026
- Submitted: April 30, 2026
- Operation: Air carrier
- Aircraft: [N874NN](https://openairdocs.org/aircraft/N874NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31129
- Aircraft time: 43,476 hours, 18,805 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Vapor Barrier
- Condition: Degraded
- Location: Zone 100 - Fuse
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202604304797

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: EXISTING REPAIR ON LEFT HAND WHEEL WELL VAPOR BARRIER IS DEGRADED LOCATED 28 INCHES OYTBOARD OF KEEL BEAM AT BS 663 LBL 31.83 TO LBL 45.64. APPLIED PERMANENT REPAIR ON LEFT HAND VAPOR BARRIER. PER B737-NG AARD 57-10-10-9 AND B737-NG SRM 57-10-10-2R.

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