Service difficulty report · Gearbox · Bolkms BK117C2

Difficulty date
October 2, 2025
Submitted
October 2, 2025
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
9752
Aircraft time
4,091 hours
Part
Gearbox
Part number
4639002009
Part serial
3046
Condition
Making Metal
Location
Tail Rotor
Stage of operation
TO
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

ABORTED TAKEOFF FOR T/R CHIP. CAUTION REMAINED ON AFTER ACTIVATING FUZZ BURN FOR ONE SECOND. CHIP FOUND DURING IGB CHIP DETECTOR INSP THAT REQUIRES REPLACEMENT OF GEARBOX IAW 65-32-00, 6-23 TABLE 1 ITEM D. REMOVED AND REPLACED GEARBOX IAW AMM 65-32-00, 4-1; MOC SUCCESSFULLY COMPLETED.