What was found
L1 DOOR DIFFICULT TO OPEN BINDING AFTER ABOUT 6 INCHES OF MOVEMENT POPPING SOUND HEARD IN AREA OF GUST LOCK THEN DOOR FULLY OPENED. GROUNDED - YES. ON L1 DOOR FOUND LOWER RADIUS LINK PIN KEYWASHER AND RETAINING SCREW DAMAGED CAUSING DIFFICULT DOOR OPERATION DISCONNECTED GUIDE ARM TO ASSIST FURTHER DAMAGE EVALUATION REINSTALLED GUIDE ARM WITH NEW LOWER RADIUS LINK PIN KEYWASHER AND RETAINING SCREW NO ADJUSTMENT / RIGGING MADE REF AMM 52-11-21 OPERATED L1 DOOR SEVERAL CYCLES PRESSURIZED ACFT REF AMM TASK 05-51-91 TESTS GOOD REF LP # 61299576 FOR FURTHER DEFECT ON LOWER RADIUS LINK.