# SDR CALA2026092119630

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 18, 2026
- Submitted: September 22, 2026
- Operation: Air carrier
- Aircraft: [N18112](https://openairdocs.org/aircraft/N18112), registered now
- Make and model: Boeing 757224
- Aircraft serial: 27302
- Aircraft time: 109,454 hours, 25,719 cycles
- System (JASC): [5720 · Wing Miscellaneous Structure](https://openairdocs.org/jasc/5720)
- Part: Stiffener
- Part number: 113N11841
- Condition: Corroded
- Location: Sta 735.8-Sta 77
- 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/CALA2026092119630

## Discrepancy

LEFT WING T/E CAVITY THROUGH ACCESS PANEL 561FB, AT UPPER PANEL AFT MOUNTING BRACKET HAS FOUR AREAS OF EXFOLIATION,  REMOVED AND REPLACED THE STIFFENER. ON LT WING UPPER TRAILING EDGE WSTA 735.80 - 775.10 IAW SRM 51-40-02.

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