SDR QR9R20220922002

Service difficulty report · Actuator · Bolkms BK117C2

Difficulty date: September 22, 2022
Submitted: September 22, 2022
Operation: General aviation
Filed by: QR9R369D
M1 Support Services
Make and model: Bolkms BK117C2
Aircraft serial: 18724269812
Aircraft time: 2,109 hours
System (JASC): 6700 · Rotorcraft Flight Control
Part: Actuator
Part number: 41800876400
Part serial: MC4138
Condition: Failed
Stage of operation: HO
How discovered: V
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 FAILED AP TEST. TROUBLE SHOOTING REVEALED YAW SEMA FAILS IMPEDENCE TEST WITH Y IN AMBER ON PFD AND ACTUATOR ON CAD DURING AUTO PILOT TEST. REPLACED YAW SEMA IAW AMM MBB BK 117 C2 67-20-00, 4-14, 67-00-00,5-3 67-20-00,4-8. MTF COMPLETED OK IAW AMM 06-60-00, 6-1.