What was found
SEA - FLT 21 - AIR RETURN - CAN'T RAISE GEAR AFTER TAKEOFF UNABLE TO RAISE GEAR HANDLE. THUS GEAR WOULD NOT COME UP. ATTEMPTED GEAR HANDLE RELEASE BUTTON. INSPECTED MAIN GEAR AND FOUND RIGHT MAIN TRIM CYLINDER SUPPLY HOSE RUPTURED AT AFT END OF RT MAIN TRUCK. REPLACED HOSE ASSY WITH REF TO MM TRIM CYLINDER REPLACEMENT, LEAK CHECK GOOD. SERVICED NR 3 HYD RES TO FULL. OK FOR SERVICE. (M)