# SDR YN8R201511090001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 9, 2015
- Submitted: November 9, 2015
- Operation: General aviation
- Aircraft: [N44KF](https://openairdocs.org/aircraft/N44KF), registered now
- Make and model: Cessna 421B
- Registry model: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (OpenAirDocs)
- Aircraft serial: 421B0598
- Aircraft time: 7,396 hours
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: Torque Tube
- Part number: 51330119
- Condition: Corroded
- Location: Rudder
- Part time: 7,396 hours
- 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/YN8R201511090001

## Discrepancy

WHILE REPAIRING RUDDER DUE TO WIND DAMAGE, FOUND RUDDER TORQUE TUBE, PN 5133011-9 TO BE BADLY CORRODED.  REPLACED WITH NEW.

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