# SDR USAA990666

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N404US](https://openairdocs.org/aircraft/N404US), registered now
- Make and model: Boeing 737401
- Aircraft serial: 23886
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Corroded
- Location: Bs 344
- Part time: 30,660 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/USAA990666

## Discrepancy

CLT - DURING Q-5 CHECK VISUAL INSPECTION, FOUND A 1 INCH BY 1 INCH AREA OF CORROSION AROUND SCREW HOLE AT STATION 344 LBL 28 FLOORBEAM.  CORROSION TASK NR C53-107-02 AND LEVEL 2.  REPLACED DAMAGED AREA PER SRM 53-00-51.  (M)

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