What was found
UPON INSPECTION IAW COLUMBIA HELICOPTERS SB 54-65-2, THE LEFT LOWER INTERMEDIATE GEARBOX MOUNT LUG WAS FOUND CRACKED. THIS WAS FOUND BY FLUORESCENT PENETRANT AND CONFIRMED BY EDDY CURRENT INSPECTIONS. THE CRACK APPEARED TO ORIGINATE AT THE CORNER OF THE LUG AND PROGRESS TOWARDS THE MOUNT BOLT HOLE APPROXIMATELY .25 INCH LONG. THIS IS A TROUBLESOME AREA AND THE SUBJECT OF THE ABOVE BULLETIN. SUBMITTER RECOMMENDS A DIFFERENT MATERIAL BE USED IN MANUFACTURE OF THE HOUSING. (X)