Service difficulty report · Actuator · Bolkms BK117C2

Difficulty date
September 25, 2026
Submitted
September 25, 2026
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
9336
Aircraft time
4,935 hours
Part
Actuator
Part number
41800876400
Part serial
701892
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

IN FLIGHT TRIM ACTUATOR FAIL MESSAGE WITH BACK UP SAS AND YAW TRIM CIRCUIT BREAKER POP. UNABLE TO RESET. DURING RECOVERY FLIGHT, AP WARNING FLASHED WITH GONG AND "Y", "R", & "P" INDICATIONS ON PFD. THE FOLLOWING MESSAGES WERE DISPLAYED ON THE SCROLL PAGE OF VEMD LANE 2: "ARINC YBKURT" "YBKURT INVAL" "YBKURT DEF" "PITEMA 1INVAL" "YAWEME INVAL". REMOVED AND REPLACED SEMA ACTUATOR IAW AMM 67-20-00, 4-14.