As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR INTERRUPT, LT & RT UTILITY BUSSES TRIPPED OFF DURING TAKEOFF & WOULD NOT RESET. BURNING ODOR WAS REPORTED FROM AFT & MIDDLE CABIN, DISSIPATED AFTER UTILITY BUSSES TRIPPED OFF. FOUND LT GCU TO BE AT FAULT. REPLACED LT & RT GCU`S IAW AMM 24-22-02. RAN BOTH ENGS AT HIGH POWER, CHECKED UTILITY BUSSES IAW AMM 71-00-00. SYS CHECKED NORMAL.