# SDR USAA2011021490729

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 6, 2011
- Submitted: February 15, 2011
- Operation: Air carrier
- Aircraft: [N423US](https://openairdocs.org/aircraft/N423US), registered now
- Make and model: Boeing 737401
- Aircraft serial: 23990
- Aircraft time: 59,025 hours, 29,930 cycles
- System (JASC): [5414 · Nacelle/Pylon, Plate/Skin](https://openairdocs.org/jasc/5414)
- Part: Doubler
- Condition: Cracked
- Location: Lt Pylon
- Stage of operation: IN
- How discovered: E
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2011021490729

## Discrepancy

CLT - MAJOR REPAIR - Q3 CHECK - CRACKED DOUBLER AT LEFT PYLON ACCESS OPENING 5728L, INBOARD AFT CORNER.  REPAIRED LEFT PYLON ACCESS OPENING 5728L, INBOARD AFT CORNER IAW TYPICAL REPAIR 737-5430-10-0054.

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