# SDR USAA2012011900005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 13, 2011
- Submitted: January 19, 2012
- Operation: Air carrier
- Aircraft: N426US
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24548
- Aircraft time: 59,768 hours, 40,074 cycles
- System (JASC): [5414 · Nacelle/Pylon, Plate/Skin](https://openairdocs.org/jasc/5414)
- Part: Skin
- Part number: 311A1450
- Condition: Cracked
- Location: Nr 1 Pylon
- 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/USAA2012011900005

## Discrepancy

Q6 CHECK -  CRACK ON NR 1 ENGINE PYLON SKIN AT INBOARD ACCESS PANEL 5723L CUTOUT.  REPAIRED ACCESS PANEL 5723L CUTOUT IAW EA 103536.

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