# SDR AALA202508117993

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 28, 2025
- Submitted: August 11, 2025
- Operation: Air carrier
- Aircraft: [N971AN](https://openairdocs.org/aircraft/N971AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29547
- Aircraft time: 65,637 hours, 28,119 cycles
- System (JASC): [4910 · APU Cowling/Containment](https://openairdocs.org/jasc/4910)
- Part: Structure
- 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/AALA202508117993

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: CORROSION TO APU ENCLOSURE LEFT HAND FORWARD CHORD FROM BS 1091 TO BS 1094 AT S24L. REPAIRED CHORD PER EA 366875.

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