1)
http://services.casa.gov.au/avmed/da...m_migraine.pdf
http://www.icao.int/publications/Doc...84_cons_en.pdf
2) Read all the current threads in rotorhead forum. It's made of opinions and news, but you can build up a likely picture of the actual rotorwing industry.
Last edited by vaibronco; 12th August 2016 at 15:33.
Reason: one link added