# SDR USAA070556

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 18, 2007
- Submitted: July 19, 2007
- Operation: Air carrier
- Aircraft: [N417US](https://openairdocs.org/aircraft/N417US), registered now
- Make and model: Boeing 737401
- Aircraft serial: 23984
- Aircraft time: 50,715 hours, 50,715 cycles
- System (JASC): [5730 · Wing, Plate/Skin](https://openairdocs.org/jasc/5730)
- Part: Skin
- Condition: Cracked
- Location: Lt Wing
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA070556

## Discrepancy

LEADING EDGE JUST O/B OF LEFT PYLON WING STA 157 HAS CRACK.  STOP DRILLED CRACK, INSTALLED DOUBLER PER TR 57-41-02, DEFECT SIZE:  0.5 INCH.

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