Mandatory Modifications and Upgrades
It is always advisable to make sure your aircraft complies with any mandated modifications and upgrades. If you fail to do so then you may incur penalties from the relevant authorities. It is also advisable to make sure that these modifications are in place before the mandated date. See below for any mandated modifications and upgrades that are due to come into play.
TCAS II 7.1 is Mandatory
EASA now mandates that all aircraft operating in European Airspace must be equipped with Version 7.1 of TCAS II, and other areas of the world are likely to make this requirement in the near future.
ADS-B (Out) Will Be Mandatory by 2020
From the 1st of January 2020 for North America and the 7th June 2020 for Europe, ADS-B (Out) will be mandatory