SDR QMLA2012051212079

Service difficulty report · Gearbox · Bolkms BK117B2

Difficulty date: May 12, 2012
Submitted: May 15, 2012
Operation: Air carrier
Aircraft: N612AM
Make and model: Bolkms BK117B2
Aircraft serial: 7230
Aircraft time: 11,493 hours, 36,971 cycles
System (JASC): 6520 · Tail Rotor Gearbox
Part: Gearbox
Part number: 4639003007
Part serial: 721
Condition: Coked
Location: Tail Rotor
Part time: 219 hours, 758 cycles
Component: Tail Rotor
Component part number: 1173003
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

PRIOR TO TAKEOFF, MASTER CAUTION & TAIL ROTOR CHIP LIGHT ILLUMINATED. ABORTED MISSION. MECHANIC INSPECTED TAIL ROTOR CHIP PLUG, CLEANED CHIP PLUG, REPLACED TAIL GEARBOX OIL, COMPLETED 10 MINUTE GROUND RUN, INSPECTED TAIL GEARBOX CHIP PLUG, RETURNED ACFT TO SERVICE.