As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING AN ANNUAL INSPECTION ON THIS AIRCRAFT, AND OIL LEAK WAS NOTICED COMING FROM THE LOWER VACUUM PUMP DRIVE PAD. FURTHER INSPECTION REVEALED THAT THE GASKET FOR THE PUMP WAS MISSING. A NEW GASKET WAS INSTALLED AND A LEAK CHECK WAS PERFORMED.