What was found
GSO/IAD - FLT 6349 - DURING APPROACH AT 1630 HOURS ON 6-21-97, MADE A SCHEDULED LANDING WITH ONE DISCREPANCY WHICH WAS WHEN FLAPS SELECTED FORM 20 DEGREES TO 35 DEGREES, FLAPS WOULD NOT MOVE. RECYCLED FLAPS TO ZERO DEGREES, FLAPS MOVED TO ZERO DEGREES. UPON SELECTING FLAPS AGAIN, NO MOVEMENT. CREW PUMPED FLAPS TO 10 DEGREES. AIRCRAFT LANDED AND WENT TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED FLAP/LIFT SELECTOR VALVE. OPS CHECK OK. AIRCRAFT RELEASED AND RETURNED TO SERVICE. (X)