As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE LOST OIL PRESSURE IN FLIGHT. ENGINE SHUTDOWN IN FLIGHT. ON POST FLIGHT INSPECTION ENGINE OIL LEVEL FOUND TO BE VERY LOW. ENGINE TEAR DOWN REVEALED SIGNIFICANT RESTRICTION TO THE SCAVENGE PUMP SUCTION SCREEN. THE RESTRICTION WAS FROM A BREAKDOWN OF THE CORROSION PREVENTION VARNISH COATING FROM THE INSIDE OF THE ACCESSORY GEAR BOX HOUSING.