As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD-CMH - FLT 6381 - DURING CLIMB, AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO HYDRAULIC SERVICE ACCESS DOOR NOT SECURED. MAINTENANCE INSPECTED AND REPAIRED AND SECURED DOOR, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)