As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ENGINE OIL ACCESS DOOR DISCOVERED MISSING ON POST-FLIGHT INSPECTION. IN-FLIGHT SEPARATION PROBABLY OCCURRED APPROXIMATELY 2.5 HOURS INTO FLIGHT WHEN CREW NOTICED SLIGHT VIBRATION. WHEN QUERIED, CESSNA REPORTS PROBLEMS WITH SEPARATIONS OF THESE ENGINE OIL ACCESS DOORS.