What was found
(CAN) AFTER STARTING #1 ENGINE DURING TAXI, THE CREW OBSERVED A DC GENERATOR FAULT. THE AIRCRAFT WAS RETURNED TO THE BLOCKS. #1 GCU REPLACED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) AFTER STARTING #1 ENGINE DURING TAXI, THE CREW OBSERVED A DC GENERATOR FAULT. THE AIRCRAFT WAS RETURNED TO THE BLOCKS. #1 GCU REPLACED.