Aircraft Sikorsky H-53 An aircraft is a machine that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines. Journal · 09 · 21+♥ 564 Last update at 21 · 09 · by milo ‧‧‧ One of 3423Aircraft More in Aircraft Home AircraftSikorsky H-53 PIFTW