# SDR 2010FA0000334

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 2010
- Submitted: April 9, 2010
- Operation: General aviation
- Aircraft: N365QS
- Make and model: Cessna 680CE
- Aircraft serial: 6800057
- Aircraft time: 3,856 hours, 2,629 cycles
- System (JASC): [5531 · Vertical Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5531)
- Part: Stiffener
- Part number: 693101222
- Condition: Corroded
- Location: Aft Spar
- Part time: 3,856 hours, 2,629 cycles
- Component: Aft Spar Assy, Cessna
- Component part number: 69310022
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2010FA0000334

## Discrepancy

DURING REPLACEMENT OF RUDDER HINGE BRACKETS ON VERTICAL STABILIZERS REAR SPAR, EXFOLIATION CORROSION WAS FOUND ON THE LOWER BRACKET (P/N: 6931050-10) OF THE UPPER RUDDER HINGE POINT, LOWER BRACKET (P/N: 6931050-12) & UPPER BRACKET (P/N: 6931050-11) OF THE MIDDLE RUDDER HINGE POINT. ALSO NOTED EXFOLIATION CORROSION ON VERTICAL STAB AFT SPAR STIFFENER (P/N: 6931012-22) AT APPROXIMATE WL 190.763, REQUIRING REPLACEMENT OF STIFFENER.

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