1. 
   Airworthiness
   Airworthiness is a term used to describe whether an aircraft has been certified as suitable for safe flight. Certification is initially conferred by a Certificate of Airworthiness (CofA) from a National Airworthiness Authority, and is maintained by performing required maintenance actions by a licen...
   Found op http://en.wikipedia.org/wiki/Airworthiness
   
   
2. 
   airworthiness
   [n] - fitness to fly
   Found op http://www.webdictionary.co.uk/definition.php?query=airworthiness
   
   
3. 
   airworthiness
   noun fitness to fly; `the plane received a certificate of airworthiness`
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=airworthiness
   
   
4. 
   airworthiness
   1) Fitness to fly 2) Soundness
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/airworthiness/1
   
   

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