As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6771 - IAD-GSP - DURING TAKEOFF, AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO PASSENGER DOOR WARNING LIGHT ILLUMINATED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED ADJUSTED PASSENGER DOOR PROXIMITY SENSOR, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)