# SDR USAA051009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2005
- Submitted: September 19, 2005
- Operation: Air carrier
- Aircraft: N588US
- Make and model: Boeing 737-3B7
- Registry model: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Aircraft serial: 23933
- Engine: Cfmint CFM563B2
- System (JASC): [5314 · Fuselage Main, Keel](https://openairdocs.org/jasc/5314)
- Part: Keelbeam
- Condition: Corroded
- Location: Bs 673-678
- 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/USAA051009

## Discrepancy

CLT - Q6 - ANGLE, ON KEELBEAM COMPOSITE SKIN ATTACH ANGLE HAS FRETTING WORN INTO IT, 5 INCHES X 1 INCH.  CORROSION, STA 673, STA 678, LBL 8.  REMOVED CORROSION, BLENDED, AND TREATED IAW SRM, DWG.  (K)

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