As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT OB GEAR DOOR. FOUND THE DOOR TO GEAR STRUT ATTACHMENT BOLT BACKING OUT AND LOOSE. AFTER REMOVING COVER WAS FOUND THAT NUT WAS TO SECURE THE BOLT WAS NOT SAFETIED AND HAD BACKED OFF ABOUT 3 TURNS. THIS HAD COM OFF THE DOOR AND WOULD HAVE DROPPED INTO THE SLIP STREAM. (K)