As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT REAR DOOR INDICATED OPEN WITH EICAS MESSAGE AS WELL AS MFD STATUS PAGE INDICATIONS IN FLIGHT. MESSAGE APPEARED IN CLIMB APPROXIMATELY AT 30K FT AND DISAPPEARED APPROXIMATELY AT 25K IN DESCENT. PERFORMED OPS CHECK OF L1 "AFT PASSENGER DOOR" AND OPS CHECK GOOD AT THIS TIME. NO DEFECTS NOTED, REF CMM 52-12-22.