X-Plane 8 And 9 DeHavilland DH-98 Mosquito. This is actually a refresh of an older Mosquito with new sound files (good for both v8 and v9) by Dataroots, better looking pilot figures by Scooter, some improvements in the engines specs and some changes in the panel. It is recommended that v9 users open the plane in Plane Maker, go to the engine specs menu and check the "inverted fuel and oil systems" checkbox. This will prevent choking the engines in high-G manoeuvres. By Jacques Brault.