What was found
(CAN) WHEN LOWERING THE LANDING GEAR CONTROL LEVER A LOUD BAG WAS HEARD, LT GEAR CONFIRMED DOWN AND LOCK WITH THE OVERWING GEAR POP-UP INDICATOR AND AIRCRAFT LANDED SAFELY. UPON INVESTIGATION ON THE GROUND, THE F/E REPORTED A COMPLETE FRACTURE OF THE LT MLG RETRACT ACTUATOR AND A BROKEN JURY BRACE. GEAR DOOR FOUND DAMAGED ALSO AND WAS REPLACED, GEAR SWING PERFORM AND AIRCRAFT SERVICEABLE. THE DAMAGED PARTS WERE SENT TO LOCKHEED FOR ANALYSIS.