As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) NR 2 GENERATOR FAILED IN CRUISE FLIGHT. NR 2 GENERATOR WAS TURNED OFF, AND AIRCRAFT RETURNED TO BASE. INVESTIGATION REVEALED NR 2 GENERATOR BRUSHES WORN. NR 2 GENERATOR BRUSH HOLDER ASSEMBLY P/N 978.96.01.090 REPLACED WITH NEW, AIRCRAFT GROUND RUN AND CHECKED SERVICEABLE.