What was found
VISUAL INSPECTION REVEALED MAJORITY OF COOLING FINGS BETWEEN INTAKE AND EXHAUST PORTS BLOCKED. VIRTUALLY NO AIR FLOW ALLOWED TO PASS BETWEEN ALL FINS ON ALL CYLINDERS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
VISUAL INSPECTION REVEALED MAJORITY OF COOLING FINGS BETWEEN INTAKE AND EXHAUST PORTS BLOCKED. VIRTUALLY NO AIR FLOW ALLOWED TO PASS BETWEEN ALL FINS ON ALL CYLINDERS.