As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURNED TO FIELD DUE TO PARTIAL ELECTICAL FAILURE. WIRE W2018-0003-06 WAS FOUND BROKEN AT L GENERATOR CIRCUIT BREAKER C901 PHASE C. LOSS OF PHASE C AT L GEN CB CAUSED PARTIAL ELECTRICAL FAILURE. THE WIRE TERMINAL HAD BROKEN DUE TO A ONE-TIME OVERSTRESS APPLICATION. THE WIRE TERMINAL WAS REPLACED.