As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - ON BASE LEG LANDING IN HNL RECEIVED L GEN OFF LIGHT & BOTH UTILITY BUSS OFF LIGHTS. STARTED THE APU, LANDED THEN RESET GEN CONT SWITCH. CONDITION RETURNED TO NORMAL. PERFORMED BPCU BITE PROCEDURE PER FIM 24-20-00-MSG FOR LT SYS ARE UNDER FREQ TRIP IDG/PLUG/WIRING-IDG LOW OIL PRESSURE 2251. REMOVED AND REPLACED IDG ASSY IAW AMM 24-11-01. LEAK/OPS CHECK PEND. OPS CHECK LEAK CHECK GOOD REF WORK CARD 767-3-405001.