As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ENROUTE LEFT ENGINE STARTED TO LOOSE OIL RAPIDLY. ENGINE THROTTLED BACK TO IDLE AND CREW DIVERTED. ENGINE WAS NOT SHUTDOWN. ENGINE RUN CARRIED OUT. ENGINE OIL LINE SUPPLY B NUT FOR 3/4 BEARING FOUND LOOSE, NOT LOCKWIRED PROPERLY AND LEAKING. B NUT TIGHTENED AND LOCKWIRED. ENGINE RERUN AND NO LEAKS, CHECKED SERVICEABLE.