What was found
(CAN) AT LANDING GEAR SELECTION, THE LANDING GEAR DID NOT COME DOWN AND NONE OF THE FOLLOWING INDICATIONS WERE OBSERVED: HYD PUMP OPERATION GEAR MOVEMENT / NOISE GEAR DOWN LIGHTS INDICATION ON THE CONTROLLER, NOTE: ALL OTHER HYD CONSUMERS WERE OPERATIONAL THE GEAR WAS RECYCLED WITH NO SUCCESS. A GO-AROUND WAS INITIATED THEN THE ABNORMAL/EMERGENCY CHECKLIST WAS REVIEWED AND CARRIED OUT, GEAR CAME DOWN AND LOCKED . VALVE REPLACED GEAR SYS, OK (TC NR 20071214008)