# SDR USAA960491

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 22, 1996
- Submitted: March 26, 2000
- 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: Floor Beam
- Condition: Corrosion
- Location: Bs 986.5
- Part time: 19,428 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA960491

## Discrepancy

INT - DURING Q-1 CHECK VISUAL INSPECTION, FOUND 1 INCH DIAMETER AREAS OF CORROSION STATION 986.5 FLOOR BEAM UPPER CHORD LBL 45 TO RBL 45, WL 208.  REPAIRED PER EA 41219.  CORROSION TASK NR C53-107-02, CORROSION LEVEL 2.  (M)

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