As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) SHORTLY AFTER DEPARTING YZF, NR 2 DC GENERATOR WENT OFF LINE. THE AIRCRAFT RETURNED TO POINT OF DEPARTURE WHERE MAINTENANCE RERACKED THE NR 2 GCU AND GROUND RAN THE AIRCRAFT WITH NO FAULT FOUND. RETURNING TO YZF LATER SAME DAY THE NR 2 DC GENERATOR WENT OFFLINE AGAIN. UPON ARRIVAL IN YZF THE NR 2 GCU WAS REPLACED AND THE AIRCRAFT RETURNED TO SERVICE.