# SDR CALA2026030614378

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 3, 2026
- Submitted: March 6, 2026
- Operation: Air carrier
- Aircraft: [N53441](https://openairdocs.org/aircraft/N53441), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 30131
- Aircraft time: 52,435 hours, 18,701 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- Part number: 146A8123U25
- 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/CALA2026030614378

## Discrepancy

AFT CARGO DOOR CUTOUT LOWER SILL THE WEB HAS CORROSION ON UPPER AND LOWER SURFACE,  REMOVED CORROSION AT AFT CARGO DOOR CUTOUT LOWER SILL WEB MAT.ORIG INAL IS .045 REMAINING MATERIAL IS .038 LOSS OF .007 FOUND TO BE OUT OF LIMITS IAW SRM 53-60-15-1A-1,  REMOVED AND REPL ACED WEB IAW SRM 51-40-02 AND BAC DWG 146A8340 REV-.

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