# SDR USAA2012032800003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 24, 2012
- Submitted: March 28, 2012
- Operation: Air carrier
- Aircraft: N455UW
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24997
- Aircraft time: 56,627 hours, 37,311 cycles
- System (JASC): [5311 · Fuselage Main, Frame](https://openairdocs.org/jasc/5311)
- Part: Frame
- Condition: Cracked
- Location: Fuselage
- 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/USAA2012032800003

## Discrepancy

SHEAR SKIN / CDFI VISIT - CRACK ON INNER CHORD FROM BOTTOM FASTENER DOWN TO END OF CHORD AT BS 639, RBBL 63.5.  REPAIRED FRAME AT BS 639, RBBL 63.5 IAW TYPICAL REPAIR TR 737-5362-10-002373.

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