As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LANDING GEAR CIRCUIT BREAKER TRIPPED WHEN CREW SELECTED GEAR DOWN DURING APPROACH. GEAR WAS EXTENDED MANUALLY AND CREW LANDED WITHOUT INCIDENT. AFTER EXTENSIVE TROUBLESHOOTING, THE RIGHT MAIN LANDING GEAR ACTUATOR WAS CHANGED DUE TO A SUSPECTED FAULT IN THE ACTUATOR'S INTERNAL GEAR DOWN MICROSWITCH. MULTIPLE GEAR SWINGS WERE PERFORMED WITH NO DEFECTS NOTED. AN OPERATIONAL CHECK FLIGHT WAS COMPLETED WITH NO DEFECTS NOTED.