adjective, air·wor·thi·er, air·wor·thi·est.
Examples from the Web for airworthy
The FAA will have to certify SpaceShipTwo as airworthy, but there are as yet no protocols in place for that process.Tycoons in Space: One in Orbit and One Still Grounded|Clive Irving|October 5, 2014|DAILY BEAST
Without wings or control surfaces, it is obviously not airworthy.
This is to notify you that the aircraft in question has been inspected and found to be not airworthy.
The law says that it can't leave the ground unless it's airworthy.
The inventor thinks they will be compact and just as airworthy as ocean liners are seaworthy.The Boy's Book of New Inventions|Harry E. Maule