As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW SNAGGED THE NR 1 INVERTER WOULD TRIP BUT WAS RESETTABLE. THE SNAG WAS NOT DUPLICATED ON THE GROUND. TROUBLESHOOTING FOUND THE BREAKER WOULD SWITCH ON AND OFF WITHOUT PLUNGER ACTIVATION IF VIBRATION WAS INDUCED. BREAKER REPLACED.