# SDR CALA2025100709729

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 5, 2025
- Submitted: October 7, 2025
- Operation: Air carrier
- Aircraft: [N27239](https://openairdocs.org/aircraft/N27239), registered now
- Make and model: Boeing 737824
- Aircraft serial: 28951
- Aircraft time: 79,293 hours, 29,659 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Structure
- Part number: 147A851023
- 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/CALA2025100709729

## Discrepancy

AFT CABIN STA 986 LBL 55 WEB UNDER L/H INNER CHORD HAS EXFOLIATED CORROSION.  REMOVED AND REPLACED WEB AT AFT CABIN STA 986 LBL 55 WEB UNDER L/H INNER CHORD IAW SRM 51-40-02-0G-0 AND DWG 147A8501 SHEET 23.

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