As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BNA FLIGHT 2831, THE CREW REPORTED THE LANDING GEAR DID NOT RETRACT AFTER TAKEOFF. ALSO RECEIVED A LANDING GEAR/LEVER DISAGREE WARNING ON THE EICAS. THE AIRCRAFT RETURNED AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AND PERFORMED OPERATIONAL CHECKS OF THE LANDING GEAR. NO DEFECTS WERE FOUND. THE AIRCRAFT WAS RETURNED TO SERVICE.