What was found
CLT\AGS - FLT 5132 - FLIGHT HAD JUST TAKEN OFF. FLIGHT CREW SELECTED GEAR UP, BUT, THE LANDING GEAR DID NOT RETRACT. THE CREW SELECTED GEAR DOWN AND RETURNED TO CLT FOR AN UNEVENTFUL LANDING. MAINTENANCE PERSONNEL WERE DISPATCHED TO TROUBLESHOOT THE PROBLEM. THE EMERGENCY LANDING GEAR EXTENSION T-HANDLE WAS FOUND IN THE PULLED POSITION. THE HANDLE WAS RESET AND THE AIRCRAFT WAS RETURNED TO SERVICE.