HM Government and the CAA recommend that all airfield operators prepare a safeguarding map in order to help protect their operations. A safeguarding map is a way for Local Planning Authorities to filter out planning applications without having to refer them ALL to the airfield operator. ASDhas brought safeguarding maps up-to-date - no longer the large, unwieldy printed versions. Using modern technology ASDdoes all the necessary analysis and then provides files loadable directly intoGoogle Earth® and GIS. This approach reduces the cost significantly without compromising the accuracy. In order to model the safeguarded surfaces, full airfield data will be required from the operator. The CAA-recommended format is given in CAP 738 and maps prepared by ASD meet or exceed all theCAA requirements. They show all the licensed runways and strips with their approach and takeoff surfaces, horizontal and conical and outer horizontal surfaces (physical safeguarding), and take into account navigation aids (technical safeguarding) and other limiting surfaces. ASD’s maps show colour-coded contours showing the maximum height (AGL) to which building may takeplace without reference to the airport. This allows a more precise assessment than with the older grid square format. Contact ASD to discuss your requirements.