This 3D model was originally created with Sketchup 8 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 Original KLM aircraft by Oguzhan N.! This is more or less good and accurate with proper tail form. The following is a Boeing 737 Classics member :) The 737-400 design was launched in 1985 to fill the gap between the 737-300 and the 757-200, and competed with the Airbus A320 and McDonnell Douglas MD-80. It stretched the 737-300 another 10 ft (3.45 m) to carry up to 168 passengers. It included a tail bumper to prevent tailscrapes during take-off [an early issue with the 757], and a strengthened wing spar. The prototype rolled out on January 26, 1988 and flew for its first time on February 19, 1988. The aircraft entered service on September 15, 1988 with launch customer Piedmont Airlines {25 aircraft ordered}. The 737-400F was not a model delivered by Boeing but a converted 737-400 to an all cargo aircraft. Alaska Airlines was the first to convert one of their 400's from regular service to an aircraft with the ability to handle 10 pallets. The airline has also converted five more into fixed combi aircraft for half passenger and freight. These 737-400 Combi aircraft are now in service. The 737-400 is now replaced by the 737-800 in the Boeing 737 NextGen family. The link gets you to the model I took :)