Airservices is Australia's air navigation service provider - we provide air traffic control, aviation rescue and fire fighting and air navigation services.

Frequently asked questions

Why was CASR Part 175 introduced?

The role and importance of aeronautical information and aeronautical data changed significantly with the implementation of area navigation (RNAV), required navigation performance (RNP), airborne computer based navigation systems and data link systems. Corrupt or erroneous aeronautical information and aeronautical data can potentially affect the safety of air navigation.

ICAO requires Contracting States to the Chicago Convention to provide an Aeronautical Information Service (AIS) which publishes aeronautical data and aeronautical information in the Aeronautical Information Publication (AIP). CAR 233 (1)(h) requires pilots to carry aeronautical maps, charts, aeronautical information and instructions published in the AIP relevant to the route being flown and any alternate route that may be flown, or by a person approved by CASA.

Additionally, the details of waypoints and navigation aids are contained in navigation system databases such as Global Navigation Satellite Systems (GNSS), Flight Management Computers (FMC) and Flight Management Systems (FMS).

What is the objective of CASR Part 175?

CASR Part 175 will create standards to ensure that the integrity and quality of aeronautical data and aeronautical information is maintained throughout the aeronautical data processing chain from data originator to AIS provider to commercial data service providers.

The purpose of CASR Part 175 is to ensure that:

  • aeronautical information and data has enough quality assurance protocols around the supply process that reasonable assurance can be provided to the end-users (airline companies and pilots)
  • data meets industry accuracy and resolution requirements
  • the data has not suffered from transmission corruptions.

Alignment with the ICAO Annex 14 and CASR Part 139 MOS is intended.

How do I provide aeronautical information?

The mechanism for the provision of aeronautical information protocol is a Data Product Specification (DPS). This details the requirements around accuracy, resolution, notification dates, format and other quality assurance topics. To receive a standard or detailed data product specification sheet, contact Airservices on

How will Airservices manage the collection of obstacle data under CASR Part 175?

Australia has an obligation under Annex 15 to provide obstacle data sets. CASR Subpart 175.E of the regulation outlines the obstacle data collection requirements. Airservices will manage the availability of obstacle data on behalf of Australia in order to meet Australia’s obligations. The obstacle data will be available to all users, however Airservices may charge for this data.

Is there a CASR Part 175 Manual of Standards (MOS)?

No. Provision for a MOS is included in CASR Part 175; however, a requirement for a MOS has not been identified at this stage.

Who should I contact if I have further questions?

For further clarification on your role as a supplier of aeronautical data, please contact Airservices via email to Information on CASR Part 175,  including their development and implementation, is available on the CASA website.