As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN DOOR: UNABLE TO CLOSE THE MAIN DOOR, EITHER FROM INSIDE OR OUTSIDE USING NORMAL PROCEDURES. DOOR IS ABLE TO CLOSE WHEN THE CABIN SYSTEMS ELECTRICAL POWER IS CUT OFF. CORRECTIVE ACTION: CYCLED POWER, PERFORMED OPERATIONAL OF MED WITH INTERRIOR AND EXTERIOR DOOR SWITCH NUMEROUS TIME WITH NO DEFECT NOTED. OPERATIONAL CHECK GOOD AT THIS TIME, REF AMM GL5000 AMM 52-11-00.