As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE IFSD (IN FLIGHT SHUT DOWN) DUE TO OIL LEAK AT LP20 FUEL OIL COOLER VALVE ADAPTER AND PACKING. DIVERTED TO LIM. *S/D* FOUND FUEL OIL COOLER BYPASS VALVE ADAPTER FITTING (P/N 227435) LOOSE AND O-RING (AS3208-06) CUT, (REF IPC 79-21-00A-005C PG1 ITEMS 220 AND 230). LOOSE FITTING WAS FOUND CORRECTLY SAFETY WIRED. NO INDICATION OF MAINTENANCE IN THIS AREA SINCE ENGINE INSTALLATION. NO PREVIOUS INDICATION OF HIGH OIL CONSUMPTION ON THIS ENGINE. REPLACED O-RING AND ADAPTER FITTING.