lot's of aluminum .. but they know c60 is what they need to be using for the sake of safety ... recently the first plane with a c60 frame was created.
Most likely the jet engines.
To be an airplane with jet engines? All jet airplanes leave contrails.
aviation gasoline, it is used because of its combustion power
Yes.
they fly
Air
Gravity.
Yes they are still being used but they are not popular. That answer is true for military airplanes but for civilian airplanes propeller driven airplanes are the MOST flown and more of them are being manufactured than jet planes.
Airplane engines use jet fuel. Read more, below.
Well the first airline to use jets was.... http://www.answerblip.com/what-was-the-first-commercial-airline-to-use-jet-airplanes
If you are asking about carburetor jets, then they are made from brass. Jet engines, are made with many different materials, the main one probably is titanium.
five jet