As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YKM-BFI - THE MAIN LANDING GEAR CIRCUIT BREAKER POPPED. PILOT DIVERTED TO PAE MAINTENANCE BASE AND CRANKED GEAR DOWN. MAINTENANCE CREW FOUND THE LANDING GEAR RELAY BURNED UP. REPLACED RELAY AND GEAR RETRACTION PERFORMED. AIRCRAFT RETURNED TO SERVICE.