Alaska Airlines was the launch customer of the 737-900, with its first delivery in 2001. Since then the fleet has grown to also include the newer 737-900ER variant, with longer range and ETOPS certification. This package contains three variations of Alaska's 737-900 fleet; N408AS which is a newer -900ER, N320AS a regular -900 with winglets, and finally N303AS one of the first -900s ever built, but never fitted with winglets. Because it was an early build and testbed model for Boeing, structural modification to the wings would be necessary, negating the cost benefits of adding winglets. Developed by Tenkuu Developers Studio (TDS). Model features high resolution textures, dynamic flexing wings, nose gear steering, rudder lock, ground spoilers, low speed aileron locks at high speed, fully animated control surfaces, fully independent suspension, trim animation, opening passenger doors, rolling wheels, animated thrust reversers with reverser block doors, detailed textures, full night lighting, ground service vehicles and more. Flight dynamics design by Nick Wilkinson and David Biggar. Master textures and livery by Kyle Schurb. Repaint only included.