Proposed Criteria for Assessing and Accepting the Airspace Change Masterplan

Closes 26 Jun 2020

Opened 27 Feb 2020


The UK Civil Aviation Authority’s (CAA) 2018 Airspace Modernisation Strategy sets out a new shared objective between the CAA and the Government for modernising airspace which is to deliver quicker, quieter and cleaner journeys and more capacity for the benefit of those who use and are affected by UK airspace.

Of the 15 initiatives that form the Strategy, two are known as Future Airspace Strategy Implementation – South, and Future Airspace Strategy Implementation – North (known as FASI-South and FASI-North respectively). These are complex airspace design programmes that require coordination between the different ‘sponsors’ of airspace changes, such as airports and NERL. The CAA and the Department for Transport (DfT), have commissioned NERL to establish an impartial team known as the Airspace Change Organising Group (ACOG) to lead the programme to create a coordinated implementation plan for airspace changes in Southern UK. This is being referred to as the Masterplan for short. 

The purpose of the Masterplan is to set out where airspace change could be taken forward to provide benefits, to consider potential conflicts, trade-offs and dependencies, and set out a preferred implementation plan. The Masterplan does not set the detail of individual airspace designs or solutions. It will however, identify where any airspace changes would be needed to deliver a range of benefits, including to reduce noise, deliver air quality or fuel efficiency benefits or where more direct routes are possible that could reduce controlled airspace.


Why We Are Consulting

The Masterplan which ACOG produces will need to be formally assessed and accepted into the CAA’s Airspace Modernisation Strategy, in order to give it a statutory basis. Acceptance of the Masterplan into the CAA Strategy makes the Masterplan, together with CAP 1616, the legal basis against which the individual airspace change decisions are made by the CAA.

The CAA and DfT need to be reassured that the Masterplan identifies the conflicts, and trade-offs associated with airspace redesign, as well as how ACOG propose to resolve these, including how they align with relevant policy.

Your feedback is being sought on the criteria that the CAA proposes to use to determine whether to accept the Airspace Change Masterplan into the Airspace Modernisation Strategy.  The proposed criteria are detailed in CAP 1887 which is available to download at the bottom of this page. It covers the proposed assessment and acceptance criteria, including relevant policy considerations, as well as expectations for engagement on the development of the Masterplan.



The UK Civil Aviation Authority has made the decision to further extend the deadline of this public engagement.  This will allow stakeholders a greater opportunity to input into the engagement exercise despite the disruption caused by COVID-19.

The public engagement exercise will now close on 26 June 2020.

Give Us Your Views

Published Responses

View submitted responses where consent has been given to publish the response.


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