ETSO-C159d#1 Next Generation Satellite Systems (NGSS) Equipment

Deviates from ETSO C159d §3.1.1 by using RTCA DO262D dated April 2019 instead of EuroCAE ED-243 dated April, 2017.

Deviates from ETSO C159d §3.1.1 by using RTCA DO262D dated April 2019 instead of EuroCAE ED-243 dated April, 2017.