# SDR USAA991040

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 16, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N508AU
- Make and model: Boeing 737-3B7
- Registry model: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Aircraft serial: 23383
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Corroded
- Location: Bs 312
- Part time: 38,811 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/USAA991040

## Discrepancy

CLT - DURING Q-4 CHECK VISUAL INSPECTION, FOUND NUMEROUS SPOTS OF CORROSION .5 INCH BY .5 INCH AT STATION 312, LBL 33 TO RBL 8 FLOORBEAM.  CORROSION LEVEL 1.  REPLACED T-CAP OF FLOORBEAM PER SRM 53-10-51.  (M)

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