As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW RECEIVED "CHECK OIL" AND "OIL PRESS 3" CAS MESSAGE IN FLIGHT. CREW SHUTDOWN #3 ENGINE, DECLARED EMERGENCY AND DIVERTED. FOUND OIL COOLER SUPPLY LINE CRACKED, NON-MAGNETIC MATERIAL IN INLET AND MAGNETIC DEBRIS IN TRANSFER GEARBOX. REPLACED OIL COOLER SUPPLY LINE WITH NEW P/N 3061253-5.