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The boundary between flight information regions and UIRs vary by country, but is usually above FL245 (24,500 feet) or FL660 (66,000 feet) depending on jurisdiction. [2] They are used to manage high level traffic such as commercial airliners and military aircraft. Some countries may have their boundary below FL245.
Flight Information Regions for Italy. In aviation, a flight information region (FIR) is a specified region of airspace in which a flight information service and an alerting service (ALRS) are provided. [1] The International Civil Aviation Organization (ICAO) delegates which country is responsible for the operational control of a given FIR. FIRs ...
Area control centers (ACCs) control IFR air traffic in their flight information region (FIR). The current list of FIRs and ACCs is maintained by the International Civil Aviation Organization (ICAO). The following is the alphabetic list of all ACCs and their FIRs as of October 2011 [update] :
The related implementation of flight information service is commonly known as UNICOM, but in some situations, this service is provided by the primary FSS frequency (callsign RADIO), in addition to which a few U.S. airports now also have bespoke AFIS services, but this is implemented as a recording similar to ATIS and AWOS, not a live service.
In air traffic control, an area control center (ACC), also known as a center or en-route center, is a facility responsible for controlling aircraft flying in the airspace of a given flight information region (FIR) at high altitudes between airport approaches and departures.
Flight Guidance FIC flight information centre: FIDO Fog Investigation and Dispersal Operation Airfield operations FIKI Flight Into Known Icing Aircraft operations FIR flight information region: ATC FIS Federal Inspection Services FIS-B Flight information services – broadcast FISE flight information service enroute FL flight level: ATC FLIR
ZQZ refers to a Centre in Charge of Flight Information Region or Upper Flight Information Region'. In other words, the addressee is Karachi Area Control Centre or Karachi Flight Information Centre. The last character X indicates that an explicit identification of the organization or function addressed is not required.
Shannon FIR is the flight information region (FIR) for the country of Ireland. The Irish Aviation Authority is responsible for regulating Irish aviation, and has delegated the provision of air navigation services (including air traffic control services) to Airnav Ireland. Its ICAO code is EISN. Its boundaries are from surface to flight level ...