The purpose of this Information Notice is to inform operators of civil Small Unmanned Aircraft (SUA) and Small Unmanned Surveillance Aircraft (SUSA) within the weight category 7 – 20 kg that there will be a future need for their aircraft to be assessed for airworthiness in relation to operating within 150 m of a congested area. The operator will need to put forward a ‘safety case’ to the CAA (or potentially another approved entity) for an assessment of the proposed type of operation, which will also include initial and continuing airworthiness considerations.
http://www.caa.co.uk/application.aspx?catid=33&pagetype=65&appid=11&mode=detail&id=6326
