As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, CREW NOTED A VIBRATION FOR APPROXIMATELY 5 SECONDS. DURING PRE-FLIGHT THE NEXT DAY, DOOR 170A WAS DISCOVERED TO BE MISSING. TEMPORARY REPAIRS WERE MADE AND THE A/C WAS FLOWN TO A REPAIR FACILITY FOR REPLACEMENT OF DOOR 170A.