What was found
FLAPS HALFSPEED STATUS ON TAXI OUT. FOUND 3 OF THE 4 ACTUATORS FAILED TORQUE CHECK. REMOVED AND REPLACED ALL FLAP ACTUATORS LT AND RT SIDE IAW MM 27-53-01 AND 27-53-05. LEFT WING FLAP ACTUATORS - OPS CHECK GOOD. (RIGHT WING) RIGGING AND OPS CHECKS GOOD. LEFT NR 1 FLAP ACTUATOR S/N OFF: 3278, LEFT NR 2 FLAP ACTUATOR P/N: 852D100-19, S/N OFF: 3201, LEFT NR 3 FLAP ACTUATOR P/N: 853D100-19, S/N OFF: 1908, LEFT NR 4 FLAP ACTUATOR P/N: 854D100-19, S/N OFF: 1671 RIGHT NR 4 FLAP ACTUATOR P/N: 854D100-20, RIGHT NR 3 P/N: 853D100-20, S/N OFF: 1916, RIGHT NR 1 P/N: 852D100-19, S/N OFF: FRO361, RIGHT NR 2 P/N: 852D100-19, S/N OFF: FRO354.