As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"ENG 4 OIL PRESSURE" ENG 4 SHUT DOWN DUE TO ZERO OIL QUANTITY/LOW PRESS AFTER SHUT DOWN OIL PRESS REMAINED 7PSI. SERVED ENG OIL WITH 25 QTS ACCOMPLISHED ENG MOTORING AND FOUND LEAK ON IDG DRAIN PORT. REPLACED NR 4 ENG IDG CARBON SEAL. ACCOMPLISHED ENG RUN AND NO LEAK FOUND AMM 24-11-01.