As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS IN THE CABIN AND BOTH INTAKE BYPASS AMBER LIGHTS FLICKERING IN FLIGHT. ONLY WITH BOTH PROPELER RPM AT 1050. PROPELLER HEAT WAS OFF. CLEANED BOTH A/C GENERATOR CONNECTOR PLUGS. GROUND RAN A/C AT 1050-1200 WITH NO DEFECTS NOTED. OK FOR SERVICE.