The Boeing B-17 Flying Fortress is a four-engine heavy bomber aircraft developed in the 1930s for the (USAAC.   Credits: Model: Veltro2k AvHistory engine sound: Gregoryp cockpit: Kesselbrut Ini working, and skins, decals and screens and whatnots; including hundreds of hours of research>: Wrench Others I'm sure I'm forgetting....   Make sure to read the instructions !!!!!!   Under no circumstances shall this be used as whole or part of any payware product !!!!!!!!!!!!!