As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPPER COWLING BROKE AWAY FROM AIRCRAFT DURING FLIGHT. AFTER INSPECTING THE AIRCRAFT, IT SEEMS THE FRONT PIN BROKE OFF THE COWLING POSSIBLY THE ADESSIVE FAILED AND CAUSED THE PIN TO BREAK AWAY AND THE UPPER COWLING TO ALLOW AIRFLOW TO ENTER THE COWL AND PUT TOO MUCH WEIGHT ON THE LATCHES CAUSING FAILURE.