What was found
DURING RUN-UP, AP TEST FAILED MULTIPLE ATTEMPTS. Y AP1 AND TRIM LIGHTS ILLUMINATED. REMOVED AND REPLACED YAW TRIM ACTUATOR IAW AMM 67-14-00, 4-1; AP TEST PASSED, YAW TRIM WORKED NORMALLY DURING HOVER AND FLIGHT.
- Difficulty date
- March 2, 2026
- Submitted
- March 2, 2026
- Operation
- General aviation
- Filed by
- QR9R369D
M1 Support Services - Make and model
- Bolkms BK117C2
- Aircraft serial
- 9746
- Aircraft time
- 4,804 hours
- System (JASC)
- 6700 · Rotorcraft Flight Control
- Part
- Actuator
- Part number
- 41800879001
- Part serial
- 2198
- 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.