As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEVERE VIBRATION IN FLIGHT. RETURNED TO EDI. ON POST FLIGHT WALK AROUND FOUND REAR AFT CARGO DOOR OPEN. VISUAL INSPECTION OF AFT CARGO DOOR REVEALED INTERNAL HANDLE AND ROD LOOSE, DOOR LOCKS CONFIRMED OPERATIONAL. RESECURED DEACTIVATION BAR IAW MM 52-35-51. NO FURTHER DEFECTS NOTED. (M)