As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED LEFT MAIN LANDING GEAR DISAGREE MASTER WARNING ON TAKEOFF FROM XNA. CREW RETURNED TO XNA AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT LANDING GEAR SYSTEM, ADJUSTED LEFT AND RIGHT UPLOCK SWITCHES AND TARGETS AND PERFORMED CHECKS USING AIRCRAFT MAINTENANCE MANUALS. AIRCRAFT RELEASED FOR SERVICE.