As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN DOOR ANNUN ILLUMINATED IN FLIGHT AIRCRAFT DIVERTED TO DDC LANDED SAFELY WITH NO FUTHER INCIDENT. MAINTENANCE CAME AND COULD NOT DUPLICATE THE DISCREPANCY AFTER SEVERAL OPERATIONAL CHECKS. COMPANY RESEARCH SHOWS NO HISTORY FOR THIS DISCREPANCY FOR THIS AIRCRAFT FOR THE PRIOR 1 YEAR PERIOD.