As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE 4, OIL QUANTITY DROPPED TO ZERO BEFORE OIL PRESSURE, REQUIRED ENGINE SHUTDOWN. FOUND OIL D-SUMP LINE AT 4 O'CLOCK POSITION CRACKED. R & R OIL LINE IAW MM 72-53-04 AND 79-21-02. PERFORMED HIGH POWER ENGINE RUN UP. (NR4) IAW MM 71-00-00 AND ALL INDICATIONS NORMAL. NR4 ENG LEAK CHECK OK.