As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAXI OUT IN BOS NR 2 GENERATOR 3 LIGHT TRIP WOULD NOT RESET. ON FAULT PANEL WENT FROM UNDER EXCITED TO UNDER VOLTAGE. ALL THREE GENERATORS ON LINE NR 2 GENERATOR HAD 0 KWS. NR 3 GENERATOR HAD 42 KWS. REMOVED & REPLACED GENERATOR ON NR 2 ENGINE IAW B727 MM 24-20-01. OPS CHECK GOOD AT THIS TIME IAW B727 MM 24-20-00.