As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW COMPLAINED OF FLICKERING VOLTMETER AND AMMETER ON LAST FLIGHT. INSP REVEALED RT 90 AMP ALTERNATOR BUSS FEED CIRCUIT BREAKER SEVERELY OVERHEATED AND CRACKED. SUSPECT FAILURE PRECIPITATED BY WATER INGESTION. BOTH BREAKERS WERE REPLACED, AS WELL AS SOME WIRING REPAIRS MADE. THIS AREA ON THIS MODEL AIRPLANE IS A KNOWN RAINWATER CONTAMINATION PROBLEM, PARTICULARLY ON ACFT WITH CREW DOOR.