What was found
AFT LEFT CABIN DOOR DISPLAY DURING TAKEOFF. TAKEOFF ABORTED AT 120KTS WITH AIRCRAFT TAKEOFF GROSS WEIGHT AT 256,900 NR. INSPECTED DOOR 4 LEFT. NO DEFECTS NOTED. OPERATED DOOR SEVERAL TIMES. ALL INDICATIONS NORMAL. DEFERRED DOOR 4 LEFT INDICATOR LIGHT TO MEL 52-71-1. DDG C/W. PER MEL 52-71-1 DDG, PRIOR TO FLIGHT INSPECTED DOOR 4 LEFT, DOOR IS CONFIRMED CLOSED AND LOCKED. OK FOR SERVICE.