1. 
   ICAO
   acronym: International Civil Aviation Organization
   Found op http://cdiac.ornl.gov/pns/acronyms.html#I
   
   
2. 
   ICAO
   abbreviation: International Civil Aviation Organization
   Found op http://www.apscharts.com/abbrev.html
   
   
3. 
   ICAO
   International Civil Aviation Organization, details ...
   Found op http://www.cryer.co.uk/glossary/i/index.htm
   
   
4. 
   ICAO
   Aviation acronym: International Civil Aviation Organisation
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
5. 
   ICAO
   International Civil Aviation Organisation
   Found op http://www.roadsafeeurope.com/useful_info/Glossary
   
   
6. 
   ICAO
   International Civil Aviation Organization
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
7. 
   ICAO
   See International Civil Aviation Authority.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
8. 
   ICAO
   
   Found op http://www.encyclo.co.uk/local/21114
   
   
9. 
   ICAO
   International Civil Aviation Organisation
   Found op http://www.aea.be/glossary/
   
   
10. 
    icao
    1) Icao 2) International civil aviation organization 3) Un agency 4) United nations agency
    Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/icao/1
    
    

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