What was found
ORF/IAD - FLT 6517 - DURING TAKEOFF AT 0650 HRS ON 9-8-96, MADE AN UNSCHEDULED LANDING DUE TO PASSENGER DOOR WARNING LIGHT ILLUMINATED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE OPENED DMI 17409 MEL 52-2. MAINTENANCE CLOSED DMI 17409 ON 9-11-96 BY ADJUSTING FORWARD MICROSWITCH, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (X)