Policy For Radio Mandatory Zones and Transponder Mandatory Zones

This document sets out the Civil Aviation Authority’s policy for the establishment of, and operations within, radio mandatory zones (RMZ) and transponder mandatory zones (TMZ). It supplements acceptable means of compliance (AMC) and guidance material (GM) to SERA.6005 adopted through ORS9 CAA Decision No.10 published on 13 January 2022.

The CAA has published a revised version of CAP 1616, Airspace Change Process, which implements the latest government policy set out in the Air Navigation Directions 2026 and the Air Navigation Guidance 2026. These changes come into effect on 1 October 2026 and this publication will be updated in due course to reflect any relevant changes.