What was found
FLIGHT 5328 RECEIVED A FLAP FAIL CAUTON MESSAGE DURING PREFLIGHT WHEN SELECTING 20 DEGREE POSITION. 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.