What was found
L1 DOOR VERY DIFFICULT TO OPEN, TOOK 3 PEOPLE. REMOVED FROM SERVICE. REF. E175 FIM 52-11-00-810-806-A FOR T/S. MEASURED THE FORCE REQUIRED TO OPEN DOOR HANDLE, EXTERNAL HANDLE = 12KGF, INTERNAL HANDLE = 10KGF. DOOR OPERATION IS NORMAL. NO INTERFERENCE NOTED BETWEEN DOOR & SURROUNDING LINING. AIRCRAFT OK FOR SERVICE.