As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR OPEN INDICATION WHEN MAIN DOOR CLOSED. PRESSURIZED AIRCRAFT. NO DEFECTS NOTED. FOUND FWD LOWER MCD MICROSWITCH TO BE MISSING ITS ARM AND NOT ACTIVATING. REMOVED AND REPLACED FWD LOWER MCD MICROSWITCH ARM AND ADJUSTED MICROSWITCH. OPS CHECK SAT.