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They do.
if you have a helicopter or a military grade hoover craft Hot-air balloons and gliders can be used
The area around Air Force One where unauthorized air craft are not allowed to fly.
12 seconds
in the UK yes
I think the answer might possibly be Amelia Earhart.
Supersonic air craft
There are aesthetic aircraft in the airport.You cannot fly them.
No, the air is what allows for lift. The only way an airplane can "fly" without air is if the downward force of gravity didn't exist.
Not without air.
It doesn't exactly help. What it does do is keep the atmosphere around the planet from dissipating, which is not only necessary for atmospheric flight, but also for breathing and stuff. Atmospheric craft can fly because their wings generate lift as a result of their motion through the air. Without air, no lift. Without gravity, no air.
Lift and speed are the two major things that makes an airplane fly. When enough speed is created to push enough air under the wings, the craft will lift off the ground.