As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
7177 - MSN - LEFT ENGINE LOST OIL PRESSURE IN FLIGHT, CREW PERFORMED SHUTDOWN OF LEFT ENGINE. MAINTENANCE INSPECTED AND FOUND LEAK COMING FROM LEFT ENGINE STARTER GENERATOR O-RING. MAINTENANCE REPLACED LEFT ENGINE STARTER GENERATOR O-RING.