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airworthy

airworthy, a.
  (ˈɛəˌwɜːðɪ)
  Also air-worthy.
  [f. air- III + -worthy, after seaworthy a.]
  Of aircraft: in a fit condition for travelling through the air. Hence ˈairˌworthiness.

1829 Mech. Mag. XI. 181 The airiner has time, in all cases (assuming that the air-car is air-worthy) to concert proper measures for his safe descent. 1864 Mayne Reid Cliff-Climbers lii. 342 Whether their aërial ship would prove herself air-worthy. 1909 Westm. Gaz. 11 May 5/2 That their vessel would be airworthy when completed. 1909 H. G. Wells Tono-Bungay iv. i, I had satisfied myself..of the real air-worthiness of Lord Roberts β [sc. a dirigible balloon]. 1920 Flight XII. 1182/2 Ensuring that machines are maintained in an airworthy condition after the issue of the airworthiness certificate. 1955 Times 23 May 6/2 The results..will be reviewed by the Air Registration Board, and their bearing on airworthiness certification will be considered.

Oxford English Dictionary

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