# SDR USAA040709

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 14, 2004
- Submitted: November 8, 2004
- Operation: Air carrier
- Aircraft: N515AU
- Make and model: Boeing 737-3B7
- Registry model: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Aircraft serial: 23701
- Engine: Cfmint CFM563B2
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin Panel
- Condition: Cracked
- Location: Keelbeam
- Part time: 523,820 hours
- 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/USAA040709

## Discrepancy

UNSCHEDULED MAINTENANCE, KEEL BEAM SKIN PANEL, 3 INCH CRACK, BS 690 KEEL BEAM PANEL.  INSTALLED DOUBLER (TEMP REPAIR) IAW SRM 53-60-12, FIG 202.

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