As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER DEPARTING YZF, THE NR 2 DC GENERATR WENT OFF LINE AND THE AIRCRAFT RETURNED TO POINT OF DEPARTURE. MAINTENACE DETERMINED THE NR 2 HALL EFFECT SENSOR HAD FAILED. THE UNIT WAS REPLACED AND THE AIRCRAFT WAS RETURNED TO SERVICE AFTER SATISFACTORY FUNCTION TEST.