These are the logos of the three organisations that are involved with civil aviation.
What are these organisations and what are they responsible for?
Check their websites and write a short answer about who they represent and what they are in charge of.
http://www.icao.int/icao/en/m_about.html
http://www.caa.gov.qa/english/index1.aspx
http://www.iata.org/Pages/default.aspx
Regards,
RV
