# SDR USAA2009010590029

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 23, 2008
- Submitted: January 8, 2009
- Operation: Air carrier
- Aircraft: [N438US](https://openairdocs.org/aircraft/N438US), registered now
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24560
- Aircraft time: 50,701 hours, 34,140 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Angle
- Part number: 6552878U97
- Condition: Corroded
- Location: Fuselage
- 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/USAA2009010590029

## Discrepancy

CLT - Q5 - MAJOR REPAIR - NR 03C10853029/004 - LEVEL 2 EXFOLIATION CORROSION ON Z ANGLE UPPER FLANGE AT L2 DOOR FROM BS967 TO BS987, LBL50.  REPLACED Z ANGLE UPPER FLANGE AT L2 DOOR FROM BS967 TO BS987, LBL50 IAW B737 SRM 51-40-02.

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