As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INFLIGHT SHUTDOWN / AIRTURN BACK / DECLARED EMERGENCY. NR 1 ENGINE OIL FILTER BYPASS LIGHT ILLUMINATED INTERMITTENTLY DURING CLIMB. PER QRH REDUCED POWER, OIL LIGHT STILL INTERMITTENT, SHUT DOWN ENGINE PER QRH. FOUND FOD AT OIL SCAVENGE FILTER. REMOVED AND REPLACED NR 1 ENGINE PER MT.