What was found
ACFT INCURRED A LANDING GEAR MALFUNCTION. DURING GEAR RETRACTION, IN-FLIGHT THE SHEAR PIN, 60-810082-3, FAILED IN THE RETRACT CONTROL ROD ASSEMBLY. THE GEAR RETRACTED AN ESTIMATED .7500 UP WHEN THE LEFT 60-810082-3 ALUMINUM SHEAR PIN SHEARED WHICH CAUSED THE GEAR TO DROP AND WAS CAUGHT BY THE INBD DOOR AS IT WAS CLOSING WHICH CAUSED DAMAGE TO VARIOUS COMPONENTS AND STRUCTURE AS IT TRIED TO PUSH THE GEAR UP. LANDING GEAR WAS SUCCESSFULLY EXTENDED MANUALLY AND ACFT LANDED UNEVENTFULLY. THE MM DOES NOT ADDRESS INSPECTION OR LUBRICATION OF THIS PIN. DISASSEMBLY OF THE CONTROL ROD ASSEMBLY IS REQUIRED TO VIEW THE PINS CONDITION. AN INSPECTION INTERVAL SHOULD BE ESTABLISHED TO DISASSEMBLE, INSPECT AND SERVICE THE RETRACT ROD ASSEMBLY.