Service difficulty report · Actuator · Bolkms BK117C2

Difficulty date
August 21, 2025
Submitted
August 21, 2025
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
9732
Aircraft time
4,300 hours
Part
Actuator
Part number
41800879001
Part serial
615
Condition
Failed
Location
Yaw Trim
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.

What was found

ABORTED TAKEOFF DUE TO TAIL ROTOR PEDALS HAVE EXCESSIVE FREEPLAY AT IDLE AND WITH ENGINES NOT RUNNING. TROUBLESHOOTING REVEALED YAW TRIM ACTUATOR WAS GRINDING. REMOVED AND REPLACED YAW TRIM ACTUATOR IAW AMM 67-14-00, 4-1. TEST FLIGHT SUCCESSFULLY COMPLETED IAW AMM 05-60-00, 6-1.