# SDR USAA070306

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2007
- Submitted: April 23, 2007
- Operation: Air carrier
- Aircraft: N531AU
- Make and model: Boeing 737-3B7
- Registry model: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Aircraft serial: 24478
- Aircraft time: 54,485 hours, 54,485 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Condition: Cracked
- Location: Fuselage
- 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/USAA070306

## Discrepancy

SKIN AT BS 380, BL 0 (E&E EXHAUST DUCT CUTOUT) HAS CRACK.  FAB'D & INSTALLED INNER & OUTER DOUBLERS PER TYP REP 53-30-18A & EA 98624, DEFECT SIZE:  .75 INCH.

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