Service difficulty report · Actuator · Bolkms BK117C2

Difficulty date
February 25, 2022
Submitted
February 25, 2022
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
14723499724
Aircraft time
2,545 hours
Part
Actuator
Part number
4180087901
Part serial
669
Condition
Failed
Stage of operation
HO
How discovered
V
Nature of condition
J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

UPON TAKEOFF INTO HOVER, A TRIM YAW FAILED. A TEST FLIGHT EVALUATION REVEALED YAW TRIM REPEATEDLY FAILED IN FLIGHT. REMOVED AND REPLACED YAW TRIM ACTUATOR IAW AMM 67-14-00, 4-1.