As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR RETURN, BANGING & VIBRATION FELT IN COCKPIT, ORIGINATING FROM LOWER FUSELAGE BENEATH STATION 1000. POST FLIGHT REVEALED DAMAGE TO NR 3 PACK INLET DOOR. CHECKED & FOUND THE PACK NR 3 RAM AIR INLET DOOR HINGE CRACKED. REPLACED THE RAM AIR INLET DOOR IAW AMM 21-62-02. REPLACED THE RAM AIR INLET DOOR ACTUATOR IAW AMM 21-62-03. PERFORMED THE PTC A & B GND TEST FOR THE NR 3 PACK RAM AIR INLET DOOR & ACTUATOR & ALL TESTED SATISFACTORY.