As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING GROUND RUN, A HOT ODOR WAS DETECTED. INVESTIGATION FOUND THE SOURCE TO BE THE RIGHT GENERATOR BUS TIE CIRCUIT BREAKER IN THE LOWER CENTER PEDESTAL. THE BOLT CONNECTING THE BREAKER TO THE BUS WAS NOT TIGHT AND THE PHENOLIC BLOCK WAS GETTING HOT.