As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT MAIN LANDING GEAR FAIRING DEPARTED AIRCRAFT IN FLIGHT DUE TO FAILURE OF 1 AN525-10R18 FASTENER THAT SECURES UPPER PART OF DOOR TO TRUNNION. THE HEAD OF THE FASTENER IS MISSING. PHILLIPS HEAD DESIGN SEEMS TO HAVE WEAKENED THE FASTENER. RECOMMEND A STRONGER FASTENER FOR THIS TENSION LOAD.