What was found
YAW ACTUATOR CAUTION LIGHT ON INFLIGHT. TEST FLIGHT EVAL FOUND ACTUATOR FAILED IN THE YAW AXIS DURING AP TEST. REMOVED AND REPLACED SEMA ACTUATOR IAW AMM 67-20-00, 4-14.
- Difficulty date
- September 24, 2025
- Submitted
- September 24, 2025
- Operation
- General aviation
- Filed by
- QR9R369D
M1 Support Services - Make and model
- Bolkms BK117C2
- Aircraft serial
- 9459
- Aircraft time
- 3,651 hours
- System (JASC)
- 6700 · Rotorcraft Flight Control
- Part
- Actuator
- Part number
- 41800876400
- Part serial
- 387376
- Condition
- Failed
- Location
- Yaw
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- F
- Precautionary procedure
- C
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.