Aviation

Aviation

Dealing with vehicles or machines used in flight or propulsion through the air.

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Aviation > Airport

sonic flight

Aviation; Air traffic control

Flight at the speed of Mach 1.

on-course indication

Aviation; Air traffic control

An indication on an instrument that provides the pilot with a visual means of determining that the aircraft is located on the centreline of a given navigational track, or an ...

prevailing visibility

Aviation; Air traffic control

The maximum visibility value common to sectors comprising one half or more of the horizon circle.

quick-donning mask

Aviation; Air traffic control

An oxygen mask that can be secured on the face of the wearer with one hand within 5 s and that provides an immediate supply of oxygen.

subsonic flight

Aviation; Air traffic control

Flight at a speed lower than Mach 1.

pavement load rating (PLR)

Aviation; Air traffic control

Canada: A number expressing the bearing strength of a pavement for unrestricted aircraft operations. PLRs are expressed on a scale from 1 (weakest pavements) to 12 (strongest ...

true airspeed (TAS)

Aviation; Air traffic control

The airspeed of an aircraft relative to undisturbed air. It is used primarily in flight planning and the en route portion of flight. When used in pilot/controller communications, ...