What was found
WHILE PERFORMING A VISUAL INSPECTION OF LEFT ENGINE, DISCOVERED THE FREON COMPRESSOR BRACKET ASSY MISSING THE NUT THAT RETAINS THE IDLER SHEAVE ARM RETAINING BOLT. THE SHEAVE ASSY WAS BEING HELD TO THE COMPRESSOR BRACKET BY BELT TENSION ONLY AND EVENTUALLY WOULD HAVE FAILED. BOLT THREADS WERE INSPECTED, A NEW WASHER AND NUT CALLED OUT FOR IN THE ENGINE PARTS CATALOG WERE INSTALLED AND TORQUED PER THE ENGINE O/M. (X)