If you fly in controlled airspace, this proposal will apply to you.

As part of the New Southern Sky (NSS) programme, Airways is moving to Automatic Dependent Surveillance - Broadcast (ADS-B). The current secondary radar service will be replaced by ADS-B as the main source of surveillance information for separation of aircraft in controlled airspace.

The CAA proposed rule change would make ADS-B mandatory for all aircraft in controlled airspace below Flight Level 245 from 31 Dec 2021.

ADS-B policy discussion document (PDF 586 KB) - submissions closed 05 Apr 2019.

Submissions have closed on the ADS-B consultation. We will now consider the submissions and provide a summary of this information to the Minister of Transport. A final policy decision on the proposed 2021 ADS-B Mandate is likely to be made by Cabinet by mid-2019.

For more information on what is required to comply with the proposed mandate see the New Southern Sky website.

Email any questions to

Links for more information if you are considering equipping with ADS-B before the proposed mandate

For ADS-B equipment and performance standards in CAA Notice 91.258

For information on how to get ADS-B installed on your aircraft

About the benefits of ADS-B

For more information about installing ADS-B, or about ADS-B equipment, contact your LAME or

For information about the ADS-B policy in controlled airspace, email