What was found
(CAN) MAINTENANCE WAS COMPLETING ROUTINE GEAR SWINGS ON KING AIR AND DISCOVERED THAT THE RT MAIN GEAR DOWN LOCK HOOKS WERE NOT FULLY ENGAGING ON THE DOWN LOCK PIN. UPON FURTHER INVESTIGATION THEY FOUND THE SET SCREW, WHICH SECURES THE PIN IN PLACE WAS LOOSE. WHICH THEN CAUSED THE PIN TO TURN IN THE DRAG BRACE AND THE DOWN LOCK HOOKS WOULD NOT FULLY ENGAGE. THIS IS ONLY APPLICABLE TO HYDRAULIC GEAR, WE HAVE INSPECTED THE REST OF OUR ACFT WITH HYDRAULIC GEAR. NO ISSUES FOUNDS.