What was found
(CAN) GEAR WAS UNSAFE GOING INTO DESCENT, DIDN`T GET 3 GREEN SO DID AN OVERSHOOT, VFR AND CYCLED THE GEAR IAW CHECKLIST. THE NEXT STEP WAS TO MANUALLY PUMP THE GEAR SO THE CREW OPTED TO GO DIRECT TO THE MAINTENANCE BASE. MAINTENANCE PERSONNEL DISCOVERED THAT THE MAIN HYD POWER PACK CONTROL RELAY CONTACTS HAD WELDED IN THE CLOSED POSITION WHICH MADE THE HYD POWER PACK RUN CONTINUOUSLY. THIS CAUSED THE POWER PACK MOTOR TO FAIL. THIS POWER PACK RELAY IS NOT COVERED UNDER THE ACFT INSPECTION PROGRAM AS AN ITEM TO INSPECT.