As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED LEFT GENERATOR FAILED IN-FLIGHT. AFTER RE-SETTING LEFT GENERATOR. BOTH GENERATORS WENT OFF-LINE. IT WAS ALSO REPORTED THAT RIGHT OR LEFT GENERATOR WORKED ALONE, BUT REGARDLESS OF WHICH ONE WAS ON-LINE, BRINGING THE SECOND GENERATOR ON-LINE CAUSED BOTH FAIL LIGHTS TO ILLUMINATE. LEFT GENERATOR WS REPLACED WITH SERVICEABLE UNIT AND THIS SOLVED THE PROBLEM.