Best regional plane every build (my opinion) #narvix #aviation #boeing #boeing737max #boeing737ng The Boeing 737 MAX 9 is a twin-engine, narrow-body airliner that is a modernized version of the 737-900ER, with a higher passenger capacity and more efficient engines. It features advanced aerodynamic designs, such as a new winglet and streamlined body, for improved fuel efficiency. The 737 MAX 9 is equipped with an advanced flight deck with large displays and is designed with passenger comfort in m