A control area or portion thereof established in the form of a corridor equipped with radio navigational aids
The space between a ceiling's insulation and the roof boards that allows air movement through the roofing system's vents, allowing moisture and summer heat buildup to escape
A control area in the form of a corridor, the centre line of which is defined by radio navigational aids
An officially designated air route with sectors defined as specific courses to or from directional radio stations
passage for air into the lungs, including the mouth, nose, pharynx, larynx, trachea, and bronchi
the system of the body that is involved in the exchange of oxygen and carbon dioxide The general term "airway" includes the mouth and nose and goes all the way to the lungs and everything in between
{i} air lane, route through the air travelled by aircraft; passageway through which air travels (Medical); ventilator shaft