The North Atlantic Central Monitoring Agency (NAT CMA) is run by National Air Traffic Services Ltd on behalf of ICAO. It is non-profit making and employs one full-time professional plus part time administrative and data analysis support.

Its major functions are to:

monitor all aspects of horizontal and vertical navigation performance in the NAT, including technical height keeping performance;
monitor aircraft approval status to help keep unapproved operations in NAT MNPS/RVSM airspace to an acceptable minimum, and;
carry out risk assessments and make recommendations to ICAO through the NAT SPG to improve safety.

Navigational Error Statistics
Document Downloads

RVSM Minimum Monitoring REQUIREMENTS, version 9 (29 July 2002)
Word Format Word File (30kb)
PDF Format PDF File (17kb)

RVSM Monitoring PROCEDURES, version 10 ( January 2005)

Word Format Word File (46kb)
PDF Format PDF File (27kb)

To date, the NAT CMA has played a major role in ensuring continued safe operations in the NAT and has been a key player in the successful introduction of RVSM by acting as the keeper of the RVSM approvals database and providing the requisite monitoring infrastructure.

Contact Address for NAT CMA

North Atlantic Central Monitoring Agency

c/o National Air Traffic Services

Room G41

Scottish & Oceanic Area Control Centre,

Sherwood Road,

Prestwick,

Ayrshire

KA9 2NR

Fax +44 (0) 1292 692754

e-mail natcma@nats.co.uk

MNPSA Operations Manual (2005)

Word (2.2MB)

PDF (1.6MB)

Can’t read pdf files?

If you are experiencing problems downloading from this site, we would like to help

Contact PCO

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Programme Co-ordination Office
Background

ICAO established its North Atlantic Systems Planning Group (NAT SPG) in 1965 to study, monitor, evaluate the NAT air navigation system in the light of changing traffic characteristics, technological advances and traffic forecasts.

In 1994 the North Atlantic Implementation Management Group (NAT IMG) was formed to coordinate and manage – on behalf of NAT SPG – the implementation of change to the NAT air navigation system.

In 1996 a meeting of the North Atlantic NAT IMG endorsed the establishment of a Programme Coordination Office (NAT-PCO) to coordinate the establishment and implementation of a development programme for the NAT region. It was agreed that the UK would provide such a programme coordination service on behalf of the IMG.
The objectives of the NAT PCO are:

To produce and maintain a NAT Development Programme Plan (NAT DPP) on behalf of the NAT IMG.
To coordinate the implementation of the NAT DPP with the NAT Implementation Groups, the international ATM service providers, user organisations and other interested parties.
To coordinate and disseminate relevant programme management information among the international ATM service providers, the NAT IMG, its sub-groups and other interested parties.
To devise, implement and maintain a tracking programme against the proposed service improvements and report accordingly.
To provide status reports on a regular basis to NAT IMG and its sub-groups
To address other issues as directed by the NAT IMG.

If necessary you can e-mail the NAT PCO.

SPG Sub Groups

Group Meetings Schedule

Datalink Clearance Gander

Datalink Trials FANS & FMC WPR

ORCA (Shanwick)

(Oceanic Route Clearance Authorisation)

Shanwick Oceanic provides the delivery of oceanic clearances by data link in accordance with the EUROCAE ED106 standard. Guidance for users can be downloaded from the link below.

Operators should note that, prior to making use of the system, the airline details must be included in the system configuration. In order to facilitate this, operators should provide the appropriate details to the contact address specified in the Guidance document.

Download

Guidance for the Delivery of Ocean Clearances by ORCA

(version 11 valid 18th March 2004)

PDF (124KB)

Zipped Word (107KB)

Word (214KB)

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OCD (Gander)

(Oceanic Clearance Delivery)

Gander Oceanic Clearance Delivery procedures changed on the 28th of September 2006.

Version 17 is now current and available for download below

Gander Data Link Oceanic Clearance Delivery Crew Procedures v 17

(Valid from 28th September 2006)

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Datalink Trials

FANS1/A ADS WPR :

ADS trials are now complete in NAT airspaceand is operational in NAT ADS airspace.

FANS1/A CPDLC:

Phases 1 & 2 CPDLC Operational trials were commenced by NavCanada (Gander) and UK NATS (Shanwick) in Autumn 2002 and Phase 3 commenced in December 2003. Iceland (Reykjavik) and commenced Phase 1& 2 operational trials in 2005. Portugal (Santa Maria) commenced Phase 3 operational trials in the last quarter of 2006. A fully operational CPDLC service is in operation in the New York FIR.

FMC WPR:

Some aircraft are equipped with systems (PIP and Pegasus) that enable non-ADS datalink position reports to be made from the aircraft’s Flight Management Computer. Although designed for aircraft operators’ use rather than for ATC purposes, it has been recognised that it could be of benefit to ATC. Operational FMC Waypoint Reporting trials have been completed and FMC WPR is now operational in participating OCAs.

More Information & Guidance for Operators on Datalink Utilisation

The Volcanic Ash Contingency Plan is available for download from the links below.

(Updated March 2006)

Word Format (138Kb)
Zipped Word Format (50Kb)

Acrobat PDF Format (53kb)

INTERNATIONAL AIRWAYS VOLCANO WATCH OPERATIONS GROUP

The documents listed below are available for public download.

(Versions françaises ici)

NAT Concept of Operations

International General Aviation Ops. Manual

NAT Guidance & Information Material (NAT Doc. 001)

NAT Region Supplementary Procedures (Doc 7030)

High Frequency Management Guidance Material

NAT Region Flight Planning Guidance Material

Application of Separation Minima

Catalogue of ICAO Publications and Audio-visual Training Aids

Link to Datalink Documents

NAT Concept of Operations (April 1999)

____________________

PDF (63KB)

Zipped Word (64KB)

Word 6 (163KB)

NAT International General Aviation Operations Manual

3rd Edition version 2.1 ( 2004 )

____________________

PDF(721KB)

Word (1.8MB)

Guidance and Information Material Concerning Air Navigation in the North Atlantic Region (NAT Doc. 001)

7th Edition (September 2002)

PDF (860)

Word (692KB)

Zipped Word (205KB)

The following zipped diagrams may be downloaded and inserted into Appendix A of the Word version.

The jpg diagrams can be inserted in Appendix A of the pdf version of the manual.

Appendix A-3 VHF Coverage at FL100 diagram

A-3.zip (811KB)

A-3.jpg (135KB)
Appendix A-4 VHF Coverage at FL200 diagram

A-4.zip (814KB)

A-4.jpg (134KB)
Appendix A-5 VHF Coverage at FL300 diagram

A-5.zip (166KB)

A-5.jpg (140KB)
Appendix A-6 LORAN-C Coverage diagram

____________________

A-6.zip (363KB)

A-6.jpg (63KB)

NAT Regional Supplementary Procedures

(Doc 7030)

Amendment 211 (June 2006)

+ Consequential Amendment (November 2006)

+Approved Proposal for Amendment

(Serial No. : EUR/NAT -S 05/09 -NAT RAC/2)

Parts 1, 2 & 3

Rules of the Air, Air Traffic Services, Search and Rescue Communications
Meteorology

____________________

PDF (169KB)

High Frequency Management Guidance Material for the NAT.

(Version 1.0) September 2003

____________________

ZippedPDF (460KB)

Zipped Word (350KB)

Word (859KB)

NAT Region Flight Planning Guidance Material

(September 2004)

____________________

Word (78KB)

PDF (39KB)

Application of Separation Minima

(September 2005)

____________________

Word (2MB)

PDF (595KB)

Catalogue of

ICAO Publications and Audio-visual Training Aids

(2006)

This site is provided by the North Atlantic Programme Coordination Office on behalf of the International Civil Aviation Organisation (ICAO).

The site provides information on the groups who manage the air traffic control system for the ICAO North Atlantic Region (NAT) and who plan and implement developments to the system. These groups operate under the authority of the North Atlantic Systems Planning Group (NAT SPG).

Documentation relating to air traffic control and aircrew procedures within the NAT region may be downloaded from the site

Further information is available at

ICAO EUR/NAT Website
**New**
NAT SAFETY ALERT
The ICAO North Atlantic Systems Planning Group (NAT SPG), at its forty-third meeting in Paris from 12-15 June 2007, noted a list of safety-related issues affecting the operations in the NAT Region.

Download pdf file
Oceanic Clearance Delivery (OCD) in the
SANTA MARIA Oceanic Control Area (OCA)
Operational trials of Oceanic Clearance Delivery (OCD) in the Santa Maria Oceanic Control Area (OCA) are planned to commence on 1st of August, 2007.

Download pdf file

Safety Presentations

In co-operation with ICAO and NATS, Scottipc presents in streaming video

“Level Best” and “On The Right Track”

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Contingency & Diversion (Using 15nm Offset)
These procedures have been removed from the latest version of the NAT Regional Supplementary Procedures, but can be viewed in and printed from the link below.

Contingency & Diversion

NAT Regional Supplementary Procedures (Doc 7030)

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Strategic Lateral Offset Procedures

SLOP Procedures

** Slop Presentation (9 MB wmv file) **

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Oceanic Errors Safety Bulletin

(Updated 24th April 2007)

Download pdf file

*New* Download Sample Oceanic Checklist

Questions or comments should be referred to:

natcma@nats.co.uk