Service difficulty report · Trim Motor · Bolkms BK117C2

Difficulty date
December 21, 2022
Submitted
December 21, 2022
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
07720199147
Aircraft time
3,554 hours
Part
Trim Motor
Part number
41800879001
Part serial
3062
Condition
Failed
Stage of operation
HO
How discovered
V
Nature of condition
G
Precautionary procedure
C

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

What was found

ABORTED TAKE-OFF DUE TO AUTOPILOT FAILED TEST FIVE TIMES. TEST FLIGHT EVAL REVEALED DURING MULTIPLE AP TESTS, AP1 AND AP2 FAILED EACH 3 TIMES WITH YAW CAUTION ON THE PFDS AND YAW TRIM MESSAGE ON THE CAD. AP TEST DID PASS ON OCCASION DURING TESTING. UNABLE TO RETRIEVE AFCS MODES OR APMS BIT CODES.REMOVED AND REPLACED YAW TRIM MOTOR IAW AMM 67-14-00,4-1, AMM 22-10-00,5-1. COMPLETED MTF IAW AMM 05-60-00, 6-1.