In the temple of Abydos, Giza, Egypt, there are images of flying machines that closely resemble the present, only that these images (reliefs actually) are 3150 years old.
ya it seems to be.. but i think it might have had some other meaning.. As far as i know they used to symbolize the objects they used to talk about.
I wonder where did they saw flying machines.
this may be the Evidence for the possibility of Time-Travel 8-) 8-) 8-)
I have seen the first ever such concepts were evolved by leonardo-da-vinci
Refer
http://www.drawingsofleonardo.org/
I have also seen some chinese heli concepts, or simply airscrews, but none are so old..