As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE OIL PRESSURE FLUCTUATING 27-32 LBS. AFTER 15 MINUTES (APPROX) PRESSURE DROPPED TO BELOW 25 PSI. ENGINE WAS SHUT DOWN. FOUND LEFT ENGINE STARTER CARBON SEAL LEAKING. INSTALLED SERVICEABLE CARBON SEAL AND SEAL RING. ALSO REPLACED IDG AND HYD PUMP CARBON SEALS AND SEAL RINGS. OPS AND LEAKS CHECKS GOOD. IAW GE SEI-756 SPECIAL PROCEDURE 63. P/N: 5018T49P01, 4018T16P04.