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State AIPs and current NOTAMs, which should be read in conjunction
with the material contained in this Document.
The NAT MNPS – Edition 2008 is an updated version of Guidance Material first published in 1979
and is primarily for the information of pilots and dispatchers planning and conducting operations in
North Atlantic (NAT) Minimum Navigation Performance Specifications (MNPS) Airspace.
The Manual has been produced with the approval and on behalf of the North Atlantic Systems
Planning Group (NAT SPG); a North Atlantic regional planning body established under the auspices
of the International Civil Aviation Organisation (ICAO). This Group is responsible for developing the
required operational procedures; specifying the necessary services and facilities and; defining the
aircraft and operator approval standards employed in the NAT Region.
Edited by European and North Atlantic Office of ICAO
3 bis, Villa Emile Bergerat
92522 Neuilly-sur-Seine Cedex – France
Tel: +33 1 4641 8585
Fax : +33 1 4641 8500
Email: icaoeurnat@paris.icao.int
http://www.paris.icao.int/
This Document will be made available to users from a number of web sites including the NAT
Programme Co-ordination Office (PCO) web site: http://www.nat-pco.org/ . The PCO web site will
also include, any errata (changes) or addenda (additions) to the current edition of the Manual. The
Manual will be reissued on a yearly basis in August. Details of additional Internet access will be
promulgated through the Aeronautical Information Service (AIS) of NAT ATS Provider States.
Further material, for the information of States of Registry and Aircraft Operating Agencies, dealing
primarily with planning and management aspects of NAT MNPS operations, is contained in ICAO
‘Consolidated Guidance and Information Material concerning Air Navigation in the North Atlantic
Region’ (NAT Doc 001), published by the European and North Atlantic Office of ICAO and available
at http://www.nat-pco.org/.
To assist with the editing of this Manual and to ensure the currency and accuracy of future editions it
would be appreciated if readers would submit their comments/suggestions for possible
amendments/additions, to the ICAO EUR/NAT Office at the above Email address.
The NATSPG has also commissioned the UK National Air Traffic Services to produce an interactive
DVD ROM, “On the Right Track”, which contains general information on Air Traffic Control in the
North Atlantic Region and which highlights many of the common operational errors and discusses
their causes. This DVD ROM, like this Manual, is aimed at pilots, dispatchers and others concerned
in operations on the North Atlantic. It is available at no charge to bona fide operators on application
to: customerhelp@nats.co.uk.
NAT MNPS ii Edition 2008
NORTH ATLANTIC MNPSA OPERATIONS MANUAL
As part of the continuing development within the operating environment of NAT MNPS Airspace,
various trials take place in the NAT from time to time. Some of these trials require the assistance of
operators and pilots. For a listing of current trials (if any) and participation details etc., reference
should be made to the AIS documentation of NAT ATS Provider States. Details may also be found on
the above-mentioned PCO web site.
NORTH ATLANTIC MINIMUM NAVIGATION PERFORMANCE SPECIFICATIONS
AIRSPACE
The vertical dimension of MNPS Airspace is between FL285 and FL420 (i.e. in terms of normally
used cruising levels, from FL290 to FL410 inclusive).
The lateral dimensions include the following Control Areas (CTAs):
REYKJAVIK, SHANWICK, GANDER and SANTA MARIA OCEANIC plus
the portion of NEW YORK OCEANIC which is North of 27°N but excluding the area
which is west of 60°W & south of 38°30'N
Some idea of these dimensions can be obtained from the maps in Chapters 2 and 3. However, for
specific dimensions, reference should be made to ICAO Regional Supplementary Procedures
(Doc.7030) - NAT/RAC (available at http://www.nat-pco.org/).
Pilots MUST NOT fly across the North Atlantic within MNPS Airspace, nor at flight levels 290 to 410
inclusive anywhere within the NAT Region, unless they are in possession of the appropriate
Approval(s) issued by the State of Registry or the State of the Operator.
The North Atlantic is the busiest oceanic airspace in the world. In 2007 approximately 425,000 flights
crossed the North Atlantic. For the most part in the North Atlantic, Direct Controller Pilot
Communications (DCPC) and Radar Surveillance are unavailable. Aircraft separation assurance and
hence safety are nevertheless ensured by demanding the highest standards of horizontal and vertical
navigation performance/accuracy and of operating discipline. Within NAT MNPS Airspace a formal
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