What was found
(CAN) AFTER RECEIVING CHIP IND. FROM REDUCTION GEARBOX FILTER REMVD FOR INSP. OIL IN FILTER & BOWL FOUND TO BE BLACK WITH FERROUS MATERIAL PRESENT. REDUCTION GEARBOX THEN REMOVED & INIT INSP REVEALED THAT GEARBOX INPUT GEAR NUT P/N 214-040-236-001 HAD LOST TORQUE & BACKED OFF OF IMPUT GEAR&INTO SIX ENGINE OUTPUT SHAFT SEAL HOUSING BOLTS P/N MS9566-12. BOTH INPUT GEAR NUT & SIX SEAL HOUSING BOLTS WERE FOUND TO BE SCRAP. IT WAS NOTED THAT APPROX ONE HR EARLIER REDUCTION GEARBOX REMVD TO FACILITATE REPL OF ENGINE OUTPUT SHAFT SEAL HOUSING RE-SHIMMED TO ACCOMMODATE NEW OUTPUT SHAFT (PART OF TORQUE KIT).