What was found
FLIGHT 5142 RECEIVED A FLAP FAIL MESSAGE DURING APPROACH TO SYR. CREW DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT. COMPLIED WITH AD 98-20-01 FLAP CAUTION MESSAGE FIRST EVENT, MAINTENANCE ACTION, PARAGRAPH (B) 1, 2, 3 (A, B, C AND E). FLAP SYSTEM WAS RESET WITH NO FURTHER FLAP CAUTION MESSAGES. AIRCRAFT WAS FERRIED TO CVG WHERE THE NR 4 FLEX DRIVE SHAFT WAS REPLACED.