As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI LT GENERATOR TRIPPED AND AC X-TIE LOCKOUT MSG ILLUM. RESET NG. STARTED APU TO PWR THE LT BUS AFTER RESETTING X-TIE. AT 125 KTS RT GENERATOR OFF AND X-TIE MSG RESET GEN, NO HELP. THE RT BUSS WAS DEAD. RT GEN VOLTS AND FREQS ZERO. REPLACED BOTH GENERATORS AND LEFT CSD. ALSO, REPLACED X-TIE RELAY.