As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED BACKUP GEN TRIPPED OFFLINE TWICE DURING TAXI IN. MX CONTACTED, CHECKED THE CONVERTER AND FOUND CONDITION NORMAL. HOWEVER DUE TO HISTORY, ITEM TRANSFER TO MEL IAW 2425A. REPLACED NR2 ENGINE BACKUP GENERATOR AND ACCOMPLISHED BUG TEST.