What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS PRIOR TO FLAP SELECTION DURING APPROACH, FLAP INDICATOR SHOWED SMALL NEEDLE SPLIT. WHEN FLAP HANDLE MOVED TO FLAPS 1 NEEDLES DID NOT MOVE AND OHP LE DEVICES PANEL SHOWED NO MOVEMENT. QRH PROCEDURE FOLLOWED, CALL FLAPS UP LANDING AT TOUCHDOWN V/S (200-/MIN GS @ 190 KTS). MAINTENANCE ACCOMPLISHED BITE PROCEDURE OF FSEU IAW AMM 27-51-00. FOUND FAULT MESSAGES 27-53258 FLAPSKEW, 27-53254 FLAP 5 SKEW , 27-53255 FLAP 6 SKEW AND 27-53256 FLAP 7 SKEW. REMOVED AND REPLACED FLAP/SKEW ELECTRONICS UNIT IAW AMM 27-51-01. OPS CHECKED NORMAL.