# SDR CALA2025121912241

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 10, 2025
- Submitted: December 19, 2025
- Operation: Air carrier
- Aircraft: [N76254](https://openairdocs.org/aircraft/N76254), registered now
- Make and model: Boeing 737824
- Aircraft serial: 30779
- Aircraft time: 76,181 hours, 28,470 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Part number: 147A576213
- Condition: Corroded
- Location: Zone 200
- 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/CALA2025121912241

## Discrepancy

EXFOLIATED CORROSION AT AFT WET AREA  BS 947 - 960,  RBL 50  INTERCOSTAL.   R & R THE INTERCOSTAL AT MAIN CABIN AFT WET AREA BS 947.5 - 967, RBL 50 IAW SRM 51-40-02-0G-0, & DWG 147A5760.

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