What was found
FLT NR 6235 - JFK-IAD - DURING TAXI RETURNED TO GATE, DUE TO FREON COMPRESSOR MOTOR BURNED UP CAUSING SMOKE OUT OF EXHAUST DUCT. NO SMOKE REPORTED IN CABIN. MAINTENANCE OPENED DMI 07407, MEL 21-10 AND DEACTIVATED SYSTEM. MAINTENANCE CLOSED DMI 07407 ON 8-25-96 BY REMOVING AND REPLACING FREON MOTOR. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)