# SDR 2013FA0000711

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 27, 2013
- Submitted: November 29, 2013
- Operation: General aviation
- Aircraft: [N265K](https://openairdocs.org/aircraft/N265K), registered now
- Make and model: Bombdr BD1001A10
- Aircraft serial: 20265
- Engine: Hnywl AS90711A
- System (JASC): [2721 · Rudder Tab Control System](https://openairdocs.org/jasc/2721)
- Part: Trim Switch
- Part number: 39006205003
- Part serial: DCO814
- Condition: Malfunctioned
- Location: Pedestal
- Part time: 1,713 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/2013FA0000711

## Discrepancy

DURING CLIMB, RUDDER TRIM WAS USED TO COORDINATE FLIGHT AND NOTICED SWITCH HAD SUDDENLY NO SPRING TENSION TO THE LT AND RT.   THOUGHT IT WAS A LOOSE SET SCREW PROBLEM.  NOTICED WHEN APPLYING RUDDER TRIM AND RELEASING SWITCH THERE WAS STILL TRIM BEING APPLIED, PRESSED THE MSW SWITCH AND MOTION STOPPED EVEN AFTER RELEASING THE MSW SWITCH.  MOVED SWITCH TO OPPOSITE DIRECTION AND IT WOULD FOLLOW COMMAND BUT WOULD NOT STOP WHEN RELEASED.  ABLE TO STOP THE TRIM MOTION BY MANUALLY CENTERING SWITCH AS NOT TO RECEIVE ANY TRIM MOTION.  APPLIED RUDDER FORCE WITH PEDALS TO VERIFY CONTROLLABILITY AND RETURNED TO THE AIRPORT.  FOUND THAT RUDDER TRIM SWITCH HAD FAILED INTERNALLY.  REPLACEMENT PARTS ORDERED FROM MFG AND INSTALLED AND WERE NOTIFIED OF THE INCIDENT.

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