Service difficulty report · Gcu · Bolkms BK117C2

Difficulty date
July 8, 2026
Submitted
July 8, 2026
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
9420
Aircraft time
4,522 hours
Part
Gcu
Part number
51530022
Part serial
P5141CA
Condition
Failed
Location
Nr 2 Generator
Stage of operation
TX
How discovered
O
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 NR 2 DISCONNECT ON THE GROUND DURING STUDENT CHANGE AND COULD NOT BE RESET. BEFORE THE FAILURE, LOAD BALANCE WAS 15 AMPS GEN #1 AND 40 AMPS GEN #2. REMOVED AND REPLACED #2 GCU IAW AMM 24-30-00, 4-1.