<Table> <Tr> <Td> </Td> <Td> This section contains too many or too - lengthy quotations for an encyclopedic entry . Please help improve the article by editing it to take facts from excessively quoted material and rewrite them as sourced original prose . Consider transferring direct quotations to Wikiquote . (September 2011) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section contains too many or too - lengthy quotations for an encyclopedic entry . Please help improve the article by editing it to take facts from excessively quoted material and rewrite them as sourced original prose . Consider transferring direct quotations to Wikiquote . (September 2011) </Td> </Tr> <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> The application of airworthiness defines the condition of an aircraft and supplies the basis for judgment of the suitability for flight of that aircraft, in that it has been designed with engineering rigor, constructed, maintained and is expected to be operated to approved standards and limitations, by competent and approved individuals, who are acting as members of an approved organization and whose work is both certified as correct and accepted on behalf of the State . </P>

Who is responsible for determining if an aircraft is airworthy