This document summarizes the design of the Jayhawk Economic Turboprop Transport (J.E.T.T.) aircraft for the 2013-2014 AIAA Undergraduate Team Aircraft Design Competition. It provides the mission specifications for a new regional turboprop airliner, including a 400 nautical mile economic mission carrying 75 passengers and a 1,600 nautical mile design mission carrying 67 passengers. It then describes the initial configurations considered and presents analysis on determining design parameters through statistical modeling techniques. Key aspects of the preliminary aircraft design are summarized, including engine selection, wing design, and layout of major systems.