What was found
(CAN) FLAPS FAILED AT ZERO DEGREES (WHEN SELECTED TO 8 DEGREES) ON APPROACH. AN UNEVENTFUL FLAP ZERO LANDING WAS CARRIED OUT. ALL FLAP ACTUATORS WERE REPLACED AND THE SYS FUNCTION CHECKED. PN OF THE REMOVED ACTUATORS ARE: LT1, 852D100-23, LT 2, 852D100-25, LT NR 3, 853D100-23, LT4, 854D100-23, RT1, 852D100-25, RT2, 852D100-23, RT3, 853D100-24, RT4, 854D100-24.