As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS MSG IN FLIGHT FL310 DOOR PAX AFT OPEN. FLIGHT CREW PLACARDED AFT PAX DOOR IND M PROCEDURE. READJUSTED AFT PASSENGER DOOR WARNING SENSOR IAW AMM 52-72-21 OPS CHECK GOOD. PRESSURIZED AIRCRAFT, AFT PASSENGER DOOR SHOWED ON EICAS GREEN LIGHT MEL RESTORED