As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF AND SELECTING GEAR UP, RIGHT MAIN GEAR DOWN LIGHT REMAINED ILLUMINATED. RECYCLED GEAR PER QRH AND LIGHT REMAINS ON ALL INDICATIONS NORMAL WITH GEAR DOWN. AIR RETURNED TO MQT. REPLACED RT DOWNLOCK HARNESS IAW SF340 AMM 32-61-05-02. PERFORMED GEAR SWINGS. ALL CHECKS GOOD. P/N AIR13090.