As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, AIRCREW NOTICED THE EMERGENCY LIGHTS FLICKERED. MX CREW R & R THE RT AC GENERATOR CONTROL UNIT. PERFORMED OPS CHECK OF SYS, CHECKED UNSATISFACTORY. MX R & R RELAY 2431 K20. FOUND GCU TO BE BAD. MX CREW R & R THE NR 2 AC GENERATOR AND THE NR 2 GENERATOR CONTROL UNIT. PERFORMED OPS CHECK OF ALL SYSTEMS. PERFORMED SATISFACTORY. ACFT WAS RELEASED FOR TEST FLIGHT. TEST FLIGHT CHECKED SATISFACTORY. ACFT RETURNED TO FLIGHT STATUS.