What was found
DURING MAINTENANCE FOR ALTERNATOR FAILURE, FOUND FIREWALL HAD A HOLE DUE TO CORROSION. SUSPECT CORROSION DUE TO HEAT EXPOSURE FROM TURBOCHARGER.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING MAINTENANCE FOR ALTERNATOR FAILURE, FOUND FIREWALL HAD A HOLE DUE TO CORROSION. SUSPECT CORROSION DUE TO HEAT EXPOSURE FROM TURBOCHARGER.