# SDR USAA2012100400007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 31, 2012
- Submitted: October 5, 2012
- 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: 59,762 hours, 39,736 cycles
- System (JASC): [5753 · Trailing Edge Flaps](https://openairdocs.org/jasc/5753)
- Part: Flap
- Part number: 65C263101
- Part serial: 868
- Condition: Corroded
- Location: Lt Wing
- Part time: 33,656 hours, 22,603 cycles
- 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/USAA2012100400007

## Discrepancy

Q6 CHECK - PITTING CORROSION ON LEFT INBOARD FLAP AT LEADING EDGE AND OUTBOUND END OF CARRIAGE TORQUE SHAFT.  REPLACED LEFT INBOARD FLAP IAW JOB CARD 03C30727030.

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