<P> Airworthiness is the measure of an aircraft 's suitability for safe flight . Certification of airworthiness is initially conferred by a certificate of airworthiness from a national aviation authority , and is maintained by performing the required maintenance actions . </P>
<P> Airworthiness is the measure of an aircraft 's suitability for safe flight . Certification of airworthiness is initially conferred by a certificate of airworthiness from a national aviation authority , and is maintained by performing the required maintenance actions . </P>
who is responsible for determining if an aircraft is airworthy
who is responsible for determining if an aircraft is airworthy
a national aviation authority
a national aviation authority