Harmonised transition altitude consultation report

The report on the second UK consultation on a harmonised transition altitude of 18,000 ft has been published as CAP 1417.

This consultation built on the work carried out during the first consultation in 2012. The Concept of Operations and supporting project documentation have been developed considerably since the first consultation, with many of the issues identified being resolved to a satisfactory degree for this stage of the project. However, there are still issues which would need to be addressed before an 18,000ft TA can be implemented.