As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING APPROACH, THE ACFT LOST COMPLETE POWER "ELECTRICAL" TO THE INSTRUMENT PANEL FOR ABOUT "5 SEC". DURING THAT TIME MANY RELAYS WERE CONSTANTLY CYCLING "ON & OFF". BOTH CPT EFIS SCREEN AND ADC WERE LOST. SOME OF THE WARNINGS WERE "TOO LOW GEAR". ELECTRICAL POWER RESTORED ITSELF AFTER CYCLING STOPPED. THE CREW ELECTED TO FLY A PATTERN LANDING, AT WHICH POINT IT HAPPENED 2 MORE TIMES.