As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT MAIN GEAR 'UP' LIGHT SWITCH MOUNTING BRACKET CRACKED ALLOWING SWITCH TO FLEX AWAY FROM TRUNNION ON RETRACTION. THIS CAUSED RED 'UNSAFE' LIGHT TO STAY 'ON'. AIRCRAFT RETURNED TO AIRPORT WITHOUT INCIDENT. GEAR EXTENDED AND LOCKED NORMALLY.