As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALTERNATOR OUTPUT WIRE CHAFED ON THE RT FWD VALVE COVER AND BURNED A .2500 INCH HOLE IN THE VALVE COVER. WIRE AND BAFFLE ABOVE VALVE COVER NEED TO BE SECURED BETTER. SHORTING OF THE WIRE ALSO CAUSED DAMAGE TO COMPONENTS IN THE MCU AND SUBSEQUENT NR 1 ALTERNATOR FAILURE.