Service difficulty report · Transformer · Bolkms BK117C2

Difficulty date
January 8, 2024
Submitted
January 8, 2024
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
10721739424
Aircraft time
3,621 hours
Part
Transformer
Part number
FSC211
Part serial
1407
Condition
Failed
Location
Unknown
Stage of operation
CR
How discovered
V
Nature of condition
F
Precautionary procedure
A

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

What was found

DURING FLIGHT, APMS SPLIT BETWEEN 10 AND 35 AMPS WITH #2 ALWAYS GOING LOW. DURING THE SPLIT #1 NEVER INDICATED AN INCREASE TO COMPENSATE. TEST FLIGHT EVAL REVEALED GENERATOR AMP SPLIT EXCEEDED 10 AMPS WITH #1 @ 50 AND #2 @ 35. REMOVED AND REPLACED #2 TRANSFORMATOR IAW 24-30-00-4; MOC SUCCESSFULLY COMPLETED.