As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB THE CREW REPORTED THAT THE NR 3 GENERATOR DROPPED OFF LINE. THE ACFT WAS OPERATING WITH THE NR1 GENERATOR ON MEL AND WITH THE NR 3 DROPPING OFF LINE ELECTED TO RETURN TO DEPARTURE WHERE THE ACFT LANDED WITHOUT INCIDENT. MX REPLACED THE NR3 GENERATOR, PERFORMED OPS CHECKS AND CLEARED THE DISCREPANCY.