Flight Information Region

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Link Semantic Value
Term Flight Information Region
Status


Mandatory for


Contexts


Categories
Synonyms


Related entries


Broader term


Narrower term

Upper Flight Information Region (UIR)

Abbreviation

FIR

Definition

An airspace of defined dimensions within which flight information service and alerting service are provided.

Definition Source

ICAO, official definition, AN 2 Rules of the Air 2005

Note

(EUROCONTROL, SASS-C Glossary definition) A three-dimensional area in which aircraft are under control of usually a single authority. Internally a FIR is divided into several geographical areas called sectors. Sometimes one or more FIRs have a combined upper area control.