# SDR USAA070551

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2007
- Submitted: July 17, 2007
- Operation: Air carrier
- Aircraft: [N417US](https://openairdocs.org/aircraft/N417US), registered now
- Make and model: Boeing 737401
- Aircraft serial: 23984
- Aircraft time: 50,715 hours, 50,715 cycles
- System (JASC): [5531 · Vertical Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5531)
- Part: Rib
- Condition: Chafed
- Location: Vertical Fin
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA070551

## Discrepancy

VERTICAL FIN FWD RIB BOTTOM LEFT & RIGHT SIDE AT STA 1007.55 CHAFED.  REMOVED DAMAGED AREA, INSTALLED DOUBLER PER SRM 53-30-09, 51-70-11; EA 98755, DEFECT SIZE:  8 AND 12 INCHES.

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