# SDR CALA2026071217700

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 11, 2026
- Submitted: July 14, 2026
- Operation: Air carrier
- Aircraft: [N87507](https://openairdocs.org/aircraft/N87507), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31637
- Aircraft time: 58,758 hours, 21,282 cycles
- System (JASC): [5720 · Wing Miscellaneous Structure](https://openairdocs.org/jasc/5720)
- Part: Web
- Part number: 116A562020
- Condition: Corroded
- Location: Zone 600
- 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/CALA2026071217700

## Discrepancy

RIGHT WING OTBD L/E AREA BULL NOSE WEB IS CORRODED ON THE UPPER ATTACH FLANGE AT APPROX OFSS 580.  REMOVED CORROSION AND EVALUATED MATERIAL REMOVED .002, ORIGINAL THICKNESS .050, REMAINING THICKNESS .048 FOUND WITHIN LIMITS IAW SRM 57-41-02. RESTORED SURFACE FINISH IAW AMM 51-21-22, 51-21-73, 51-20-01.

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