As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COMPLETE LOSS OF MAIN GEARBOX OIL AND OIL PRESSURE AS A RESULT OF MGB OIL FILTER OUTLET FLUID ADAPTER ASSEMBLY SEPARATION FROM HOUSING DURING FLIGHT. CAUSE OF FITTING DISENGAGEMENT UNDER INVESTIGATION. FOR ADDITIONAL DETAILS CONTACT CHC HELICOPTERS INTERNATIONAL.