As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REFERENCE LOG PAGE 7284669: AFTER ENGINE 1 HYD LOW PRESS INDICATION IN CRUISE, ENGINE 1 OIL FILTER BYPASS SHOWED ON THE ENGINE DISPLAY. ENGINE WAS SHUT DOWN AS PRECAUTIONARY PER QRH PROCEDURE. OIL PSI AT SHUT DOWN WAS 70. WINDMILL TIME WAS 33 MINUTES. NO OIL QUANTITY LOSS WAS NOTED.