As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE: NA LEFT FWD ENTRY DOOR EICAS CAME ON IN FLIGHT PERIODICALY AND WENT OFF. DOOR CONFIRMED CLOSED AND LOCKED. OPENED & CLOSED LEFT FWD ENTRY DOOR NUMEROUS TIMES, DOOR OPEN INDICATION EXTINGUISHES NORMALLY, PER AMM 52-12-00 PB 001.