Service difficulty report · Actuator · Bolkms BK117C2

Difficulty date
September 18, 2026
Submitted
September 18, 2026
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
9358
Aircraft time
4,920 hours
Part
Actuator
Part number
41800876400
Part serial
M14561
Condition
Failed
Location
Autopilot
Stage of operation
CR
How discovered
V
Nature of condition
F
Precautionary procedure
A

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

What was found

ACTUATOR CAUTION ILLUMINATED AND WAS STILL PRESENT AFTER SHUTTING DOWN THE ACFT AND RE-STARTING. DURING TEST FLIGHT EVAL, ACTUATOR CAUTION APPEARED WITH CORRESPONDING PITCH SEMA 2 CODE ON VMED LANE 2. REMOVED AND REPLACED SEMA ACTUATOR IAW AMM 67-10-00, 4-8.