# SDR USAA001918

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 9, 2000
- Submitted: March 5, 2001
- Operation: Air carrier
- Aircraft: [N431US](https://openairdocs.org/aircraft/N431US), registered now
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24553
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Corroded
- Location: Fuselage
- Part time: 31,924 hours
- 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/USAA001918

## Discrepancy

CLT - FOUND FLOORBEAM CORRODED 1 INCH BY 1 INCH, STATION 986.5, LBL 7 - LBL 31.  CORROSION LEVEL 1 C 53-107-02.  REMOVED AND REPLACED T-CAP PER TR 53-60-01.  (M)

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