# SDR USAA360400

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 19, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N427US
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24549
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floor Beam
- Condition: Corrosion
- Location: Bs 294.5
- Part time: 19,391 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/USAA360400

## Discrepancy

INT - DURING 'Q-3' CHECK VISUAL INSPECTION, FOUND .50 INCH BY 1 INCH CORRODED AREA AROUND CLIP NUT HOLES BL ZERO - RBL 45, BS 294.5 FLOOR BEAM UPPER T-CAP, BL ZERO TO RBL 45.  REMOVED CORRODED SECTION FROM LBL 21 TO RT END.  FABRICATED AND INSTALLED NEW T-CAP SECTION AND SPLICE ANGLES.  REPAIRED PER SRM 53-10-51, FIGURE 205.  CORROSION TASK NR:  C53-107-02.  CORROSION LEVEL:  2.  (X)

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