Aircraft

Aircraft

Any machine or device that is capable of atmospheric flight either by buoyancy or by the movement of air over its surfaces.

Industry: Aviation

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Aircraft

height above airport (HAA)

Aviation; Aircraft

The height of the MDA above the published airport elevation.

significant meteorological information (SIGMET)

Aviation; Aircraft

A weather advisory issued concerning weather significant to the safety of all aircraft.

adiabatic cooling

Aviation; Aircraft

A process of cooling the air through expansion. For example, as air moves up slope it expands with the reduction of atmospheric pressure and cools as it expands.

height above landing (HAL)

Aviation; Aircraft

The height above a designated helicopter landing area used for helicopter instrument approach procedures.

significant weather prognostic

Aviation; Aircraft

Presents four panels showing forecast significant weather.

adiabatic heating

Aviation; Aircraft

A process of heating dry air through compression. For example, as air moves down a slope it is compressed, which results in an increase in temperature.