What was found
ENGINE WAS REMOVED FOR COMPLIANCE OF AD 94-20-01. ENGINE WAS DISASSEMBLED AND INSPECTION REVEALED A 3 BY 3 INCH HOLE IN THE INTERMEDIATE CASE FRONT COMPRESSOR CASE. SUSPECT A CRACK ORIGINATED AT A BORESCOPE HOLE AND PROGRESSED IN A CIRCULAR DIRECTION WITH MATERIAL LIBERATION. NO COLLATERAL DAMAGE WAS NOTED AND NO LOSS OF PERFORMANCE WAS NOTED IN RECORDS. TIME SINCE LAST SHOP VISIT AND HEAVY MAINTENANCE IS 916.7. EXTENT OF MAINTENANCE IS UNKNOWN. ENGINE OPERATED BY OMNI AIR EXPRESS.