No specific info about version 4.0. Please visit the main page of Boeing 737-MAX8 Multi-Livery on Software Informer.
It is a simulation scenery compatible with FSX - SP2 and Prepar3D.
It features the American Airlines eagle transformed into a diagonal logo.
This is an extension for Microsoft Flight Simulator.
Five highly detailed and accurate Boeing 767-300ER Models.
This is a fuel planning tool for Boeing 767-300ER Flight Simulator add-ons.
737 Professional for FSX features a highly detailed 737-200 ADV model.