As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD/ROA - FLT 6427 - DURING TAKEOFF AT 1515 HRS ON 8-9-96, ABORTED TAKEOFF DUE TO PASSENGER DOOR WARNING. AIRCRAFT RETURNED TO GATE, NO FURTHER INCIDENTS. MAINTENANCE INSPECTED, CLEANED AND ADJUSTED DOOR MICROSWITCH, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (X)