As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW NOTICED A BRIEF CHANGE IN OIL PRESSURE FOR THE LEFT ENGINE. THE PRESSURE CONTINUED TO STAY ABOUT 25 PSI BUT STARTED TO FLUCTUATE OVER THE NEXT HOUR. DIVERTED, SHUT DOWN THE LEFT ENGINE . ON THE GROUND THE CREW NOTICED A LOT OF OIL ON THE LEFT ENGINE COWLING. FOUND THE OIL CAP IN PLACE. SERVICED THE OIL AND PERFORMED A LEAK CHECK. FOUND THE STARTER GENERATOR LEAKING AND REPLACED IT. OIL PRESSURE WAS NORMAL FOR THE DURATION OF THE LEAK CHECK.