What was found
GUM - FLT 921 - AFTER DEPARTURE DEPARTURE SPN CREW DECLARED AN EMERGENCY INTO GUM BASE DUE TO LOSS OF 'A' SYSTEM HYDRAULICS. MAINTENANCE FOUND INBOARD FLAP HYDRAULIC ACTUATOR MOTOR LEAKING (LT W/W) ON REMOVAL FOUND 3 SCREWS ON MOTOR ACCESS PANEL MISSING AND O-RING BLOWN OUT. REMOVED AND REPLACED HYDRAULIC MOTOR PER MM 27-51-52. RESERVICE A, B AND STANDBY SYSTEM TO FULL. RAN FLAPS, NO PRESSURE OR FLUID LOSS NOTED. AIRCRAFT RELEASED FOR SERVICE. (M)