As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5614, IAH TO AEX - SHORTLY AFTER TAKEOFF THE FLIGHT CREW HEARD A VIBRATING UNSECURED ACCESS DOOR NEAR THE COCKPIT ON THE RIGHT SIDE, AND A STALL FAIL MESSAGE ON EICAS. THE AIRCRAFT RETURNED TO IAH AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE OXYGEN SERVICE DOOR OPEN AND INSPECTED THE AREA FOR DAMAGE WITH NONE FOUND. THE DOOR WAS SECURED CLOSED AND THE AIRCRAFT RELEASED FOR SERVICE.