An aircraft is a machine that is able tae flee bi gainin support frae the air, or, in general, the atmosphere o a planet. It coonters the force o gravity bi uisin either static lift or bi uisin the dynamic lift o an airfoil, or in a few cases the dounward thrust frae jet ingines.
The human activity that surroonds aircraft is cried aviation. Crewed aircraft are flown bi an onboard pilot, but unmanned aerial vehicles mey be remotely controlled or self-controlled bi onboard computers. Aircraft mey be classified bi different criteria, such as lift type, propulsion, uisage an ithers.