As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE LOST OIL PRESSURE DUE TO A CRACK IN THE ACCESSORY CASE. SUSPECTED CAUSE IS A VIBRATION FROM THE START/GEN. APPARENTLY WILLIAMS IS AWARE OF THE ISSUE AND CESSNA HAS WORKED TO IMPROVE THE START/GEN DESIGN TO ELIMINATE THE VIBRATION.