unairworthy
/ˌʌnˈɛrˌwɜrði/
adjective
- Not meeting the safety or mechanical standards required for flight; not fit or safe to fly.
- Aircraft that are unairworthy must be grounded until repairs are made.
- The pilot refused to take off because the engine was unairworthy.
- The mechanic declared the old plane unairworthy after finding cracks in the wing.
Antonyms