As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED LOSS IN ENGINE POWER WHILE AIRCRAFT IN CRUISE POWER SETTING. INSPECTION REVEALED BROKEN CYLINDER HOLD-DOWN STUDS, CYLINDER NR 3. SUBMITTER SUGGESTED UNDER OR OVERTORQUE POSSIBLY A CONTRIBUTING FACTOR IN HOLD-DOWN STUDS FAILURE.