Ekofisk & Balder CTAs: North Sea Class D

This consultation has ended.

The feedback we received has been analysed.  A feedback report of that analysis is available below.

Airspace around the Norwegian continental shelf is predominantly Class G with some areas split into ADS (Automatic Dependant Surveillance) regions, surrounding collections of oil and gas platforms.  This consultation regards a proposal to implement Class D CTAs within two of these extant ADS regions, from 1500ft to FL85, in the vicinity of the Ekofisk & Balder platforms (Figure 1).

Although controlled by the Norwegian ANSP Avinor, many of the platforms sit inside of the Scottish FIR, within airspace in which ATS (Air Traffic Services) has been delegated to Norway (Stavanger).  Therefore NATS is preparing and presenting this consultation and subsequent Airspace Change Proposal (ACP) on behalf of Avinor (Norway).

This consultation closed on the 19th September 2014. If approved by the CAA and subject to other external factors, the proposed implementation date is 30th April 2015.


Download the feedback report (PDF)

The proposal will be submitted to the CAA shortly. The airspace change guidance provided by the CAA states that: in the event that you wish to present new evidence or data for consideration prior to making their decision regarding the proposal, it must be submitted, in writing, to the following address:

Group Director Safety and Airspace Regulatory Group
CAA House
45-59 Kingsway

Figure 1: Oil & Gas platforms in the North Sea

Figure 1: Oil & Gas platforms in the North Sea


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