Project Open sky 737-900ER tested with FSX sp2. Uses default 737-800 virtual cockpit with custom sounds. Flight dynamics updated for a 737-900ER/w instead of the 737-900 with one more exit. Textures are from XL airways. The 737-900ER is an update of the 737-900, with another exit to meet the requirements to compete with the a321 and the 757-200.