Information about List of data service providers View our list of data service providers who are approved to publish aeronautical data, information and charts. Obstacle data providers Learn who can request information about objects or structures that may affect aviation safety. Role of aeronautical data originators Aeronautical data originators provide data and information for publication. Show more Show less Also see Part 139 of CASR Aerodromes Part 139 of CASR prescribes the requirements for aerodromes used in air transport operations. Part 175 of CASR Aeronautical information management Part 175 of CASR establishes a regulatory framework for the management of aeronautical information. Show more Show less
