Although you can’t physically see it, the airspace above our heads is divided into complex structures to enable its
many different users, from commercial airliners to military jets and private pilots, to fly safely.
The information here is a guide to the roles and responsibilities of the various organisations involved in running
the UK’s airspace and the process followed for making changes to its structure.
We have also provided information on current airspace developments that we are involved in and our reviews of
changes already implemented.
Some changes need our approval before they can be implemented while others are at the full discretion of airports or
air traffic control organisations. In all cases we encourage airports and air traffic control organisations to provide
information to local communities on all changes that will have a significant noise impact.
We absolutely understand that aircraft noise disturbs many people. We will continue to consider the environmental
impact of all our airspace decisions and have called on the aviation industry and other decision-makers to be much more
ambitious in confronting aviation’s environmental challenges. You can submit complaints about airspace noise by
providing a use of UK airspace report (FCS 1521).
You can find more information at www.caa.co.uk/noise.
The government tasks the CAA with developing policy for the design of UK airspace and Parliament has set out in law
what we must consider when doing this.
The Secretary of State for Transport has given us guidance on how we must interpret and carry out our environmental
duty. This includes the policy that in general aircraft descending to or climbing from airports should be concentrated
along the fewest possible specified routes and that these routes avoid densely populated areas as far as possible. This
is known as concentration over dispersion.
In some cases the Secretary of State for Transport’s approval is needed before changes to the airspace structure are
implemented. These are changes which might have a significantly detrimental effect on the environment or a significant
effect on noise emissions.
At Heathrow, Gatwick and Stansted the Secretary of State for Transport is also responsible for monitoring and
managing aviation noise. One way this happens is the declaration of Noise Preferential
Routes or NPRs.
The CAA works within the legal and policy framework set by Parliament and the Secretary of State to:
This work is carried out through an airspace change process.
Airports and air traffic control organisations design and ultimately request changes to the UK airspace
Air traffic control organisations develop, maintain and seek to continually improve (by trying out new concepts) the
operational procedures which their air traffic controllers follow when determining the paths aircraft are directed by
them to fly.
Airports and air traffic control organisations design proposals for changes to the airspace structure by conducting
trials (link to section below).
Before submitting a request for a change to airspace airports and/or air traffic control organisations are
responsible for conducting a consultation on the proposal and supplying us the results of this (together with technical
information on how the change will work).
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