Service difficulty report · Gearbox · Bolkms BK117B2

Difficulty date
August 5, 2016
Submitted
August 5, 2016
Operation
Air carrier
Aircraft
N154AM
Make and model
Bolkms BK117B2
Aircraft serial
7154
Aircraft time
11,247 hours, 39,862 cycles
Part
Gearbox
Part number
4639002005
Part serial
535
Condition
Making Metal
Location
Tail Rotor
Part time
14,869 hours
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

WHILE PERFORMING SCHEDULED INSPECTION. DISCOVERED FOUR SMALL METAL FLAKES ON INTERMEDIATE GEARBOX CHIP DETECTOR. NOT NUMEROUS OR LARGE ENOUGH TO CAUSE A CAUTION LIGHT TO ILLUMINATE. NO METAL DEBRIS ALLOWED IAW MAINTENANCE MANUAL. GEARBOX REMOVED FROM AIRCRAFT FOR REPAIR. THIS AIRCRAFT REMAINS OUT OF SERVICE AT THE TIME OF THIS SUBMISSION AWAITING THE REPLACEMENT GEARBOX TO ARRIVE AT THE BASE.