What was found
AP TEST FAIL DURING RUN-UP. SUBSEQUENT TROUBLESHOOTING REVEALED DURING AP GROUND TEST WITH AND WITHOUT HYDRAULICS APPLIED, YAW TRIM FAILED IN AP 1 AND AP 2. REMOVED AND REPLACED YAW TRIM MOTOR IAW AMM 67-14-00, 4-1.
- Difficulty date
- February 13, 2024
- Submitted
- February 13, 2024
- Operation
- General aviation
- Filed by
- QR9R369D
M1 Support Services - Make and model
- Bolkms BK117C2
- Aircraft serial
- 09721179337
- Aircraft time
- 3,933 hours
- System (JASC)
- 6700 · Rotorcraft Flight Control
- Part
- Motor
- Part number
- 41800879001
- Part serial
- 697
- Condition
- Failed
- Location
- Yaw Trim
- Stage of operation
- TX
- How discovered
- V
- Nature of condition
- F
- Precautionary procedure
- C
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.