As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) #1 ENGINE LOST OIL QUANTITY IN FLIGHT AND WAS SHUTDOWN. POST FLIGHT INSPECTION FOUND THE LP 6 FITTING NEAR THE OIL PRESSURE FILTER HOUSING WAS LEAKING DUE TO WORN THREADS. A HELI COIL REPAIR WAS ACCOMPLISHED. THE AIRCRAFT WAS GROUND RUN AND RETURNED TO SERVICE.