{"id":21920,"date":"2023-04-03T06:44:51","date_gmt":"2023-04-03T10:44:51","guid":{"rendered":"https:\/\/ops.group\/blog\/?p=21920"},"modified":"2024-06-13T15:01:56","modified_gmt":"2024-06-13T19:01:56","slug":"nat-datalink-exempt-airspace-2023-update","status":"publish","type":"post","link":"https:\/\/ops.group\/blog\/nat-datalink-exempt-airspace-2023-update\/","title":{"rendered":"NAT Datalink Exempt Airspace – 2023 Update"},"content":{"rendered":"

There have been some changes to the boundaries of the datalink exempt airspace in the northern bit of the North Atlantic.<\/p>\n

This used to extend down south to SAVRY, but now only goes as far as EMBOK.<\/p>\n

So now you need datalink in the NAT oceanic airspace over Greenland controlled by Gander.<\/strong><\/p>\n

Here’s a pic of what that now looks like:<\/p>\n

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Datalink required in the white area east of GOTA and south of the Reykjavik CTA.<\/p><\/div>\n

You don’t need datalink in GOTA airspace.\u00a0<\/strong>We discovered this in Aug 2022<\/a>, after some lengthy discussions with the authorities. (So that’s why GOTA is shaded blue!)<\/p>\n

You don’t need datalink over the<\/strong> northern half of Greenland <\/strong>either, but if you don’t have it, you must have ADS-B (as per the grey hatched line in the pic above).<\/p>\n

When did this change happen?<\/h4>\n

It was actually published in the updated NAT Doc 007 in Jan 2023<\/a>, but we only just spotted it now!<\/p>\n

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The new coordinates are as follows:<\/p>\n

Northern boundary:<\/strong> 65N000W – 67N010W – 69N020W – 68N030W – 67N040W – 69N050W – 69N060W – BOPUT.
\nSouthern boundary:<\/strong> GUNPA (61N000W) – 61N007W – 6040N010W – RATSU (61N010W) – 61N020W – 63N030W – 6330N040W – 6330N050W \u2013 EMBOK.<\/p>\n

Why has this happened?<\/h4>\n

At the end of 2022, Canada decommissioned some VHF and ground based ADS-B sites in southern Greenland, and therefore no longer have the datalink exempt area in the northern portion of Gander oceanic HLA airspace. So at that point, all Gander oceanic airspace became DLM airspace<\/strong> (although GOTA stayed datalink exempt).<\/p>\n

The 127.9 frequency continues to be used by Gander IFSS for the Blue Spruce Routes.<\/p>\n

So, to recap\u2026<\/h4>\n