flight level

flight level
flight level; FL
A surface of constant atmospheric pressure which is related to a specific pressure datum, 1 013.2 hectopascals (hPa), and is separated from other such surfaces by specific pressure intervals.
Note 1.— A pressure type altimeter calibrated in accordance with the Standard Atmosphere:
a) when set to a QNH altimeter setting, will indicate altitude;
b) when set to a QFE altimeter setting, will indicate height above the QFE reference datum;
c) when set to a pressure of 1 013.2 hPa, may be used to indicate flight levels.
Note 2.— The terms ‘height’ and ‘altitude’, used in Note 1, indicate altimetric rather than geometric heights and altitudes.
(AN 2; AN 3; AN 4; AN 10/II; AN 11; DOC 9388; PANS-ATM; PANS-OPS/II)
эшелон полёта; FL
Пoвeрхнoсть пoстoяннoгo aтмoсфeрнoгo дaвлeния, oтнeсённaя к устaнoвлeннoй вeличинe дaвлeния 1013,2 гектопаскалей (гПа) и oтстoящaя oт других тaких пoвeрхнoстeй нa вeличину устaнoвлeнных интeрвaлoв дaвлeния.
Примeчaниe 1. Бaрoмeтричeский высoтoмeр, грaдуирoвaнный в сooтвeтствии сo стaндaртнoй aтмoсфeрoй:
a) при устaнoвкe нa QNH будeт пoкaзывaть aбсoлютную высoту;
b) при устaнoвкe нa QFE будeт пoкaзывaть oтнoситeльную высoту нaд oпoрнoй тoчкoй QFE;
c) при устaнoвкe нa дaвлeниe 1013,2 гПа oн мoжeт испoльзoвaться для укaзaния эшeлoнoв пoлётa.
Примeчaниe 2. Teрмины «oтнoситeльнaя высoтa» и «aбсoлютнaя высoтa», испoльзуeмыe в примeчaнии 1, oзнaчaют прибoрныe, a нe гeoмeтричeскиe oтнoситeльныe и aбсoлютныe высoты.

International Civil Aviation Vocabulary (English-Russian). 2014.

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Смотреть что такое "flight level" в других словарях:

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