As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CMH - FLT 363 - ON ROTATION OUT OF CMH, CREW HEARD A LOUD AIR NOISE UNDER COCKPIT ALONG WITH ELECTRICAL COMPARTMENT LIGHT ILLUMINATING. FLIGHT RETURNED TO FIELD AT CMH AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND THE E/E COMPARTMENT DOOR UNLATCHED. SECURED DOOR AND LIGHT EXTINGUISHED. OPS CHECK NORMAL. (M)