# SDR AALA202411189742

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 14, 2024
- Submitted: November 18, 2024
- Operation: Air carrier
- Aircraft: [N912NN](https://openairdocs.org/aircraft/N912NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33319
- Aircraft time: 35,127 hours, 15,258 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/AALA202411189742

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: LHEFT HAND VAPOR BARRIER CRACKED APPROXIMATELY 9.5 INCHES OUTBOARD OF PACK EXHAUST DUCT BAYS 5L AND 7L. STOP DRILLED LOWER END OF CRACK, UPPER END OF CRACK ENDS UNDER STRUCTURE. INSTALLED FABRIC PATCH REPAIR AT BS. 663. PER AARD 57-10-10-9 AND SRM 57-10-10-2R-2.

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