The FAA develops engineering, design, and construction standards for civil airports, heliports, and seaplane bases. This includes standards for airfield pavement; airport lighting, marking, signs, and other visual aids; safety during construction; surveying and GIS data; deicing, ARFF, and other facilities; bird radar and foreign object detection systems; and more.

Data Conversion Utilities

  • Common Slope Angle Conversions - This chart shows a number of slopes related to airport design and airspace.  Slopes are shown as ratio, percent, and degree.
  • Angle converter (MS Excel) - This spreadsheet can be used to convert any angle expressed in one form, for example percent, to the same angle expressed in different units, such as degrees.
  • Vertical Datum converter - This web site provides a means for converting between vertical datums.

Related Information

Contact Us


National Policy and Guidance