What was found
WHEN FLAPS 1 CALLED FOR VISUAL APPROACH, FLAP FAIL EICAS MESSAGE APPEARED. FOLLOWED QRH, EMERGENCY DECLARED, LANDED WITHOUT INCIDENT. MAINTENANCE RETRACTED FLAPS TO 0 AND PERFORMED ELECTRICAL RIG ON FLAPS IAW AMM 27-50-00. OPS CHECKED FLAPS MULTIPLE TIMES ON GROUND, NO DEFECTS NOTED IAW AMM 27-50-00.