# SDR USAA2012041900006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 17, 2012
- Submitted: April 19, 2012
- Operation: Air carrier
- Aircraft: N442US
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24841
- Aircraft time: 57,924 hours, 39,766 cycles
- System (JASC): [5753 · Trailing Edge Flaps](https://openairdocs.org/jasc/5753)
- Part: Skin
- Part number: 6546435277MC
- Part serial: 1170
- Condition: Delaminated
- Location: Te Flap
- Part time: 18,714 hours, 13,152 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/USAA2012041900006

## Discrepancy

C1 CHECK - AREA OF DELAMINATION ON LEFT WING OUTBOARD AFT FLAP LOWER SURFACE ADJACENT TO INBOARD END.  REPLACED LEFT WING OUTBOARD AFT FLAP IAW B737 AMM 27-51-39.

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