As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROX 1 HR INTO THE FLIGHT, THE MASTER WARNING LT INTERMITTENTLY FLASHED. A COUPLE MINUTES LATER WE NOTICED NR 1 ENG OIL PRESS FLUCTUATIONS, 60-45 APPROX, WE FEATHERED THE ENG & THIS HELPS THE FLUCTUATIONS. WE HAD A MOMENTARILY NR 1 ENG OIL PRESS LT BUT IT WENT OUT. APPROX 8 MINS LATER WE GOT THE NR 1 ENG OIL PRESS MASTER WARNING LIGHT & WE SHUT DOWN THE ENG & PERFORMED THE QRH CHECKLIST.