What was found
AIRCRAFT WAS GROUNDED: R1 DOOR SLIDE GIRT BAR SHAFT LEVERS ARE DRAGGING ON FLOOR THRESHOLD, PREVENTING CONTROL HANDLE TO ARM DOOR FROM FULLY ARMING. MAINTENANCE DETERMINED THAT THE R1 DOOR AFT GIRT BAR FITTING BLANKING PLATE WAS DEFORMED CAUSING THE GIRT BAR SHAFT TO DRAG. REPLACED BLANKING PLATE AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 52-11-31-40-005-A AND TASK CARD 26L00025010.