FSX/Prepar3D Scenery--San Miguel de Allende (MSMA), Mexico. San Miguel de Allende is a city and municipality located in the far eastern part of the state of Guanajuato in central Mexico. It is 274 km from Mexico City and 97 km from the state capital of Guanajuato. Historically, the town is important as being the birthplace of Ignacio Allende, whose surname was added to the town's name in 1826, as well as the first municipality declared independent of Spanish rule by the nascent insurgent army during the Mexican War of Independence. Installer and pics inside. This new airport does not exist in FSX default scenery. By Fernando Angel Gonzalez.