# SDR AALA202601149757

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 25, 2025
- Submitted: January 14, 2026
- Operation: Air carrier
- Aircraft: [N907AN](https://openairdocs.org/aircraft/N907AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29509
- Aircraft time: 74,732 hours, 31,157 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Intercostal
- Condition: Corroded
- 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/AALA202601149757

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: CORROSION TO SEAL SUPPORT INTERCOSTAL ON AFT PRESSURE BULKHEAD AT BS 1016, FROM LBL 8 TO LBL 30. REPLACED INTERCOSTAL PER AARD 51-00-05-1.

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