Flight level

From EUROCONTROL ATM Lexicon
Jump to: navigation, search
Link Semantic Value
Term flight level
Status


Mandatory for


Contexts

SESAR

Categories
Synonyms


Related entries


Broader term


Narrower term


Abbreviation

FL

Definition

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.

Definition Source

ICAO, Official term and definition, AN 2 Rules of the Air (2005)

Note

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 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 above, indicate altimetric rather than geometric heights and altitude.

Lexicon Release

Lexicon Release 2015.2