Savoia Marchetti S. 81 Expansion bundle 1 This is an expansion bundle for the S81_v10. zip, regarding the Flightsim FS2004 FS9 FSX model of the SIAI SM81 Pipistrello, Italian bomber transport aircraft. The archive contains four new model variants and four new liveries: A. N. R., 1st Gruppo Aerotrasporti Felice Terracciano, Stormo Trasporti of the Italian Co-belligerent Air Force, Trasporto Sanitario (Air Ambulance, 145th Transport Group) and pre-war VIP Transport. This is exclusively an upgrade package, so you must have installed the main bundle S81_V10. zip before. It also contains upgrades regarding MDLs files of the main S81 package. Follow installation instructions for each FS2004 FSX cases. Models by Stefano Meneghini, paints by Manuele Villa, flight dynamics by FSAviator. See ReadMe. txt for more details.