As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L ENG OIL PRESS MASTER WARNING AT CRUISE ALTITUDE. OIL PRESS GAUGE CYCLED IN AN OUT OF LOW PRESSURE. COMPLETED QRH, WITH ENG AT IDLE MASTER WARNING CONTINUED AND OIL PRESS GAUGE CONTINUED TO CYCLE IN AND OUT OF LOW PRESS INDICATION. DIVERTED TO KRAP. NO OTHER INDICATION OR ABNORMALITIES ON ENG 1. (FLIGHT 4663 - FILED CLOSED) PLEASE REFERENCE AML 1404605 PLEASE REFERENCE AML 1404617