transition altitude

English

Noun

transition altitude (usually uncountable, plural transition altitudes)

1. (aviation) The altitude (which varies by country) above which an aircraft's barometric altimeters are set as if the sea-level atmospheric pressure were equal to 1013.25 hectopascals (regardless of the actual atmospheric conditions) and altitudes are reported as flight levels.

Coordinate terms

• transition level

Related terms

• transition layer