# SDR AALA202509101594

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 10, 2025
- Submitted: September 10, 2025
- Operation: Air carrier
- Aircraft: [N878NN](https://openairdocs.org/aircraft/N878NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 40768
- Aircraft time: 41,075 hours, 17,691 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Vapor Barrier
- Condition: Cracked
- Location: Zone 100
- 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/AALA202509101594

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: CRACK IN  REAR SPAR VAPOR BARRIER AT BS 663, LBL 45.64. REPAIRED VAPOR BARRIER PER AARD 57-10-10-9.

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