Michael Changs 767s are using Xplane freewares 767 and giving no credit: http://forums.x-pilot.com/files/file/243-boeing-e767-awacs/ http://forums.xplanefreeware.net/files/file/61-boeing-767-300er-rolls-royce/ On the jpeg image says aircraft by Ruben Horsley, Druv Kalra, Alex Unru, Geoff leg, Morten Melhuus, Both the .acf shapes and the object shapes are identical except the fuselage has been shortened, many other parts settings are exactly the same. Can you flip through these screenshots, first the xpfreeware .acf nose in planemaker, then is michael changs 767 .acf file, it has the same verticies its just shortened. Flip through the front and back view, they are identical, Please compare compare the object file in AC3D, first Michael Changs which i colored orange, and then i pasted xpfreewares which i colored blue, then i raised the blue one to show that it is the same, Michael Changs has the same verticies it is just shortened. There are many other parts and settings that are exactly the same, the author is giving no credit to the original authors in fact he writes: