What was found
INVESTIGATION FOR CONTINUING CYLINDER PROBLEMS, CRACKS, ETC., FOUND MANIFOLD PRESSURE GAUGE READING LOW. VERIFIED INCORRECT READING PER BARO PRESSURE. SUSPECT OVERBOOST OF CYLINDERS DUE TO INCORRECT MP GAUGE READING.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
INVESTIGATION FOR CONTINUING CYLINDER PROBLEMS, CRACKS, ETC., FOUND MANIFOLD PRESSURE GAUGE READING LOW. VERIFIED INCORRECT READING PER BARO PRESSURE. SUSPECT OVERBOOST OF CYLINDERS DUE TO INCORRECT MP GAUGE READING.