As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DEPARTURE FROM MLI, THE RIGHT GEAR LIGHT STAYED RED AND THEY GOT THE GEAR DISAGREE LIGHT. THE CREW FOLLOWED THEIR PROCEDURES AND WAS ABLE TO GET THE GEAR DOWN AND LOCKED WITH NORMAL INDICATIONS. THE FLIGHT RETURNED TO MLI WITHOUT INCIDENT. CYCLED GEAR NORM/EMERGENCY RETRACTION OPS CHECK GOOD. CK OP OF FLT CONTROL PRIORITY VALVE.