# SDR USAA951168

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 3, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N417US](https://openairdocs.org/aircraft/N417US), registered now
- Make and model: Boeing 737401
- Aircraft serial: 23984
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floor Beam
- Condition: Cracked
- Location: Bs 520
- Part time: 19,934 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/USAA951168

## Discrepancy

INT - DURING Q-5 CHECK NDT INSPECTION, FOUND 1.25 INCH CRACK FLOOR BEAM, .75 INCH CRACK SEAT TRACK SUPPORT CHANNEL DETECTED BY VISUAL INSPECTION, STATION 520 FLOOR BEAM LBL 25, WL 207.75.  DOUBLERS INSTALLED PER EA 40020, REF SB 737-53-1120.  REPAIRED PER EA 40020, REF SB 737-53-1120.  (M)

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