As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 GENERATOR WOULD FALL OFF-LINE WHEN A BUS LOAD WAS APPLIED. THE PROBLEM WAS ISOLATED TO THE NR 1 GENERATOR LINE CONTACTOR. WHEN REMOVED, TWO OF THE CONNECTING STUDS WERE BROKEN. THIS IS THE SECOND RELAY, SAME PART NUMBER, REMOVED FROM THIS AIRCRAFT THAT HAS BROKEN STUDS.