Airports and airfields need to safeguard their operations which can be impacted by nearby development.


This includes the provision of obstacle clearance limits, the technical safeguarding of navigational aids and the creation of Public Safety Zones (PSZs).

ASA provides advice on obstacle clearance requirements in accordance with CAA criteria. Safeguarding and PSZ maps can also be produced.

Illustrative projects

Elstree airfield

An evaluation of the obstacle clearance criteria under CAP 168 in relation to proposed electricity pylons...

Battersea (London) Heliport

Advice on the operating safety issues resulting from the proposed siting of a new development some...

Duxford Airfield

Advice to Cambidgeshire County Council on operational safeguarding in relation to a Planning Application for a proposed...

Find out more about Airport Safeguarding

BGL CommunicationsAirport and airfield safeguarding