or reinstallation of such part or appliance in a type-certificated (TC) aircraft, other than the aircraft that originally had its airworthiness demonstrated, is acceptable, provided the part or appliance meets its performance requirements and is environmentally and operationally compatible for installation...
6. New certification requirementsBeginning Nov 2016 RNP4 requirements begin to go into effect, and by 2017 these mandates will cover the entire NAT region. So, it’s best for operators to be proactively RNP4–equipped and certified. Over time, CPDLC mandates will expand t...