As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START LOST ALL OIL QUANTITY FOLLOWED OIL PRESSURE ON ENGINE NR 1. COMPLETED LOW OIL PRESSURE ABNORMAL AND SHUT DOWN ENGINE NR 1 AT 35 PSI. FOUND O-RING ON OIL FILTER BROKEN. REMOVED AND REPLACED O-RING AND FILTER. OPS CHECKED NORMAL IAW M/M 79-33-0. SERVICED OIL IAW M/M 12-13-1. CAP RE-SECURED.