CAP 764 (Civil Aviation Publication 764) provides Civil Aviation Authority's (CAA's) policy and guidance on a range of issues associated with wind turbines and their effect on aviation that need to be considred by aviation stakeholders, wind energy developers and Local Planning Authorities when assessing the viability of wind turbine developments. 

The fourth edition of CAP674 incorporating ammendments to January 2012 has been issued. The latest version of the wind farm aviation guidelines is available in electornic format a the publications section of the CAA website.