As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURNBACK: JNU FLT 8216: AFTER DEPARTURE FROM JNU THE NR 2 DC GENERATOR FAULTED TWICE AND CREW WAS UNABLE TO RESET. CREW ELECTED TO RETURN TO JNU FOR MAINTENANCE. MAINTENANCE REMOVED AND REPLACED THE HALL EFFECT SENSOR. AIRCRAFT RETURNED TO SERVICE.