As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOSS OF ESSENTIAL BUSS POWER. CAPTAINS ESSENTIAL BUSS CIRCUIT BREAKER POPPED. CO-PILOTS ESSENTIAL BUSS CIRCUIT BREAKER POPPED WHILE SUPPLYING THE CAPTAINS ESSENTIAL BUSS THROUGH THE BUSS TIE. THE AIRCRAFT LOST COMM, AND NAV. FOUND THE CAPTAINS ESSENTIAL BUSS CIRCUIT BREAKER TO BE WEAK AND REPAIRED WIRING BEHIND THE CAPTAINS ARM REST. PERFORMED ELECTRICAL LOAD CHECK OF THE ESSENTIAL BUSSES AND FOUND TO BE WELL WITHIN LIMITS. ALL WORK PERFORMED IAW THE MM.