What was found
FLIGHT 5870 - EN ROUTE BOS YHZ RECEIVED A FLAP FAIL CAUTION MESSAGE. ABORTED FIRST APPROACH AT YHZ, THEN LANDED WITHOUT INCIDENT ON SECOND ATTEMPT. 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.