Service difficulty report · Gcu · Bolkms BK117C2

Difficulty date
February 27, 2026
Submitted
February 27, 2026
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
9424
Aircraft time
4,556 hours
Part
Gcu
Part number
51530022
Part serial
P17532CAA
Condition
Failed
Location
Nr 2 Generator
Stage of operation
TX
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

GEN 2 DISCONNECT AT IDLE; MAINTENANCE WAS UNABLE TO RESET. A TEST FLIGHT EVAL REVEALED #2 GENERATOR FAILED TO COME ONLINE WITH #2 GEN DISC DISPLAYED ON CAD. #2 GEN AMPS WERE 0 A. BATTERY AMP DISPLAYED +15 A AT START, DROPPED TO 0 A FOR SEVERAL MINUTES THEN CAME BACK ON SEVERAL MINUTES LATER INDICATING +5 A AT SHUTDOWN. REMOVED AND REPLACED #2 GCU.