Open skies refers to bilateral or multilateral Air Transport Agreement It liberalizes the rules for international aviation markets and minimizes government intervention

The phenomenon used by aerostats to float in air is called buoyancy.

In a tail-less aeroplane the lift and horizontal control surfaces are combined. There is no central fuselage, and perhaps even no separate vertical control surface

GARA, the General Aviation Revitalization Act of 1994, is a "statute of repose" was designed to protect manufacturers of smaller, private aircraft (less than 20 seats) from liability for accidents involving older airplanes and/or parts. If the aircraft was engaged in scheduled passenger-carrying or air medical services operations at the time of the accident then the act does not apply to those aircrafts.

When a aircraft is built to explore a certain aspect of aircraft design it is called Experimental aircraft.