SDR QR9R2023080900008

Service difficulty report · Autopilot Sys · Bolkms BK117C2

Difficulty date: August 9, 2023
Submitted: August 9, 2023
Operation: General aviation
Filed by: QR9R369D
M1 Support Services
Make and model: Bolkms BK117C2
Aircraft serial: 19724349820
Aircraft time: 2,567 hours
System (JASC): 2200 · Auto Flight System
Part: Autopilot Sys
Part number: 43800100302
Part serial: 1806597
Condition: Failed
Location: Unknown
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

DURING RUN-UP, SAS FAILED AND WOULD NOT RESET. TESTFLIGHT EVALUATION REVEALED AC FAILED AP TEST, YAW ACTUATOR CAUTION APPEARED ON PFD ALONG WITH AP1/AP2, YAW SAS, BACK-UP SAS ON CAD. REPLACED YAW FOG GYRO IAW AMM 22-10-00, 4-5. T/F COMPLETED IAW AMM 05-60-00,6-12 NO ISSUES NOTED.