FSX MAAM-Sim B-25 Mitchell Update. Allows MAAM-SIM's North American B-25J 'Briefing Time' FS9 aircraft to be used in FSX. If you are not an owner, you can obtain your copy from the MAAM Store. This update primarily addresses changes in the panel and aircraft configuration files and gauges. Thumbnail pictures for the FSX Select Aircraft Menu are included. Future updates will address visual visual and flight dynamic changes. From Mid-Atlantic Air Museum Simulations, MAAM-SIM.