What was found
FLIGHT 5346) RECEIVED A FLAP FAIL CAUTION AT 20 DEGREE FLAP POSITION DURING QBS APPROACH. 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.