Nat doc 001 Guidance and Information Material Concerning
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| PART 1 1. CONCEPTS AND DEFINITION OF THE AIRSPACE WITHIN THE NAT REGION 1.1 Airspaces Within the NAT Region 1.1.1 The NAT Region comprises the following Flight Information Regions (FIRs) as shown in the chart at Appendix A • Bod Oceanic • Gander Oceanic • New York Oceanic • Reykjavik • Santa Maria Oceanic • Shanwick Oceanic • Søndre Strømfjord 1.1.2 Most of the airspace in these FIRs is termed High Seas airspace, within which the ICAO Council has resolved that rules relating to the flight and operation of aircraft apply without exception. Responsibility for the enforcement of these rules rests with the State of Registry of the aircraft or the State of the Operator. The majority of the airspace is Class "A" airspace, and Instrument Flight Rules (IFR) rules apply to all flights when at/or above FL 60 or 600 m (2000 ft) AGL, whichever is the higher. All remaining airspace in the NAT Region that is not Class "A" is normally classified as Class "G" airspace (where IFR and Visual Flight Rules (VFR) flights are permitted and receive flight information and alerting service if requested. 1.1.3 These airspaces include • the New York Oceanic, Gander Oceanic, Shanwick Oceanic, Santa Maria Oceanic areas • the Bod Oceanic FIR when operating more than 100 NM seaward from the shoreline above FL 195; • Søndre Strømfjord FIR when operating outside the shoreline of Greenland • Reykjavik FIR when operating in the Oceanic Sector, or in the Domestic Sector at or above FL 200; and • the Shannon Oceanic Transition Area (SOTA) 4 1.1.4 MNPS Airspace shall be applicable in that volume of the NAT airspace between FL 285 and FL 420 within the Oceanic Control Areas (OCA) of Santa Maria, Shanwick, Reykjavik, Gander and New York, excluding the area West of 60 o W and South of 38 o 30’N. 3 In Class A airspace, IFR flights only are permitted. These are subject to air traffic control services that keep aircraft separated from each other. 4 The SOTA is a portion of Shanwick OCA to the South of Ireland within which air traffic services are provided by Shannon Area Control (ACC) Centre. Communications with aircraft are by means of Very High Frequency (VHF, and a Secondary Surveillance Radar (SSR) service is provided. The SOTA remains an integral part of the Shanwick OCA and MNPS procedures and requirements apply. |