Below you will find a number of links with useful information

FAA - Field Approval Process 
The field approval process is used for one serial numbered aircraft in accordance with FAA Order 8900.1, Vol. 4, Chapter 9.
www.faa.gov/aircraft/air_cert/design_approvals/field_approvals/field_approv_proc

Air Services Australia - Keeping safety first
www.airservicesaustralia.com

Civil Aviation Safety Authority of Australia
http://www.casa.gov.au

Jabiru Aircraft Manufacturers of the famous Jabiru aircraft
www.jabiru.net.au

Blue Shed Aviation for Helicopter to GA Adaptors and other Accessories
www.blueshed.com.au/products.htm

Microair USA Service Centre
www.microairusa.com

Brant Aero - Canada
www.brantaero.com

Air Sports TV
www.airsports.tv

Aeroflex
www.aeroflex.com

Euro Control - website with FAQ's that may be of interest:-
www.eurocontrol.int/corporate/public/subsite_homepage/index.html