As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GNDED. AIR INTERRUPT, EMER NOT DECLARED, LANDING UNEVENTFUL & ACFT NOT OVERWEIGHT. DURING CRUISE, NR 1 ENG OIL QTY SHOWED CONTINUOUS LOSS. FOUND A LEAK AT THE NR 1 ENG INTEGRATED DRIVE GENERATOR SHAFT O RING. R & R O RING IAW AMM 24-11-01-024-001 & 24-11-01-424-002. ACCOMPLISHED ENG RUN & LEAK CHECK. SYS CHECKED NORMAL.