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An airway is:
- a control area or portion thereof established in the form of a corridor. (ICAO Annex 11 - Air traffic Services)
- a control area or portion thereof established in the form of a corridor equipped with radio navigation aids. (EUROCONTROL EATM Glossary of Terms)
The lateral and vertical extent of airways is detailed in the appropriate national AIP.
- ICAO Annex 11: Air Traffic Services;
- ICAO Doc 4444: Procedures for Air Navigation Services - Air Traffic Management (PANS-ATM)