# SDR AALA202601121734

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 8, 2025
- Submitted: January 12, 2026
- Operation: Air carrier
- Aircraft: [N947NN](https://openairdocs.org/aircraft/N947NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31190
- Aircraft time: 34,872 hours, 14,501 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Part number: 147A758035
- 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/AALA202601121734

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: CORROSION TO AFT CARGO COMPARTMENT INTERCOSTAL FROM BS 927 TO BS 947 AT LBL 6. REPLACED INTERCOSTAL PER EA 370814.

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