This is a Revit family based on the Grumman HU-16 Albatross, which was used as the plane in the Expendables film.
 
This is a generic model, work plane based entourage Revit 2012 family which has been made to scale.
 
The Revit 2012 family can be downloaded from here:  Autodesk360
The DWFx interactive model can be viewed onloine (using Google chrome) here as follows:

With enines off and wheels down:  Autodesk360

With engines on and wheels up:  Autodesk360