As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALL LANDING GEAR RED UNSAFE LIGHTS REMAINED ON AFTER GEAR WAS RETRACTED DURING CLIMB-OUT. RECYCLED GEAR WITH SAME RESULTS. FOLLOWED PRECAUTIONARY OPERATING PROCEDURES AND FLIGHT CONTINUED TO DESTINATION (MIA). AIRCRAFT LANDED WITHOUT INCIDENT. REPLACED R2-28 LANDING GEAR LEVER RELAY. OPERATIONAL CHECK OK ON GEAR SWING. AIRCRAFT RETURNED TO SERVICE.