As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 7822, IAD TO IND - SHORTLY AFTER TAKEOFF, AT APPROXIMATELY 400 FT THE CREW RECEIVED A SERVICE DOOR OPEN EICAS MESSAGE. THE QRH CHECKLIST WAS COMPLETED AND IT WAS DECIDED TO RETURN TO IAD WHERE THE AIRCRAFT LANDED WITHOUT INCIDENT. THE SERVICE DOOR INDICATION WAS DEFERRED AND THE AIRCRAFT WAS RELEASED FOR SERVICE. THE MEL WAS CLEARED ON 4/25/2009 IN CMH WHEN A BROKEN WIRE WAS REPAIRED ON THE SERVICE DOOR IAW AMM 20-21-00.