What was found
AFTER TAKEOFF FROM BASE PAD, TAIL ROTOR CHIP LIGHT CAME ON, PILOT RETURNED TO BASE, ATTEMPTED TO BURN CHIP AND LIGHT REMAINED ON. PILOT CALLED THE MECHANIC. MECHANIC INSPECTED TAIL ROTOR GEAR BOX AND INTERMEDIATE GEAR BOX. FUZZ WAS FOUND ON THE INTERMEDIATE GEAR BOX CHIP DETECTOR AND NO CHIPS. GEAR BOX WAS DRAINED, FLUSHED AND SERVICED. ACFT WAS GROUND RUN FOR 10 MINUTES AND NO CHIP LIGHTS ILLUMINATED. INTERMEDIATE GEAR BOX CHIP PLUG WILL BE INSPECTED IN 10 HOUR IAW MM CH 65-22-00,6-1.