# SDR DXTA2009043003626

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 2009
- Submitted: April 30, 2009
- Operation: Air carrier
- Aircraft: N996QS
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500196
- Aircraft time: 7,000 hours, 4,182 cycles
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: Motor
- Part number: 411900116
- Part serial: 08J54030
- Condition: Malfunctioned
- Location: Horizontal Stab
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2009043003626

## Discrepancy

AUTOPILOT ENGAGED THE TRIM CLACKER BEGAN TO RUN AND DID NOT STOP. WITH AUTOPILOT OFF, PRIMARY TRIM FAILED WITH NO CAS MESSAGE.  CLACKER RUNS CONTINOUS IN FGC A OR B. REMOVED PRIMARY TRIM MOTOR ASSEMBLY AND INSTALLED A NEW MOTOR ASSEMBLY. OPERATIONAL CHECKED GOOD IAW MM 27-40-00.

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