What was found
THE RIVETS HOLDING THE INNER STBD MAIN LANDING GEAR DOOR HINGE SHEARED CAUSING THE DOOR TO JAM AND PREVENTING FULL GEAR RETRACTION. GEAR EXTENSION WAS NOT AFFECTED. THE RIVETS WERE REPLACED AND THE BENT OPERATING RODS AND BELLCRANK. GEAR RETRACTION TESTS WERE CARRIED OUT. SUBMITTER RECOMMENDS CLOSE INSPECTION OF GEAR DOOR HINGE RIVETS AT ROUTINE MAINTENANCE CHECKS. AIRCRAFT TOTAL TIME 714.6 HOURS.