What was found
DURING FLIGHT, ACFT HAD STRONG BURNING ODOR IN CABIN. INVESTIGATION AND INSPECTION FOUND AIR CONDITIONING COOLING SYSTEM COMPRESSOR DRIVE MOTOR FAILED. UPON REMOVAL FOUND LARGE HOLE WITH BURNED AND MELTED METAL ADJACENT TO BRUSHES. NO CB TRIPPING. AREA THAT THE STC INSTALLED AIR-CONDITIONING SYS DIRECTLY BELOW AND AFT OF CENTER WING FUEL TANK AND IN VICINITY OF FLAP HYDRAULICS (MIL-5606). FOLLOW UP OF AN AD 2013-09-11 FOR MFG, FOUND SAME EXACT PN AND PROBLEMS.