Aircraftbrowser.com
- an aircraft marketing site based in Indianapolis, Indiana

Avionics Design Services
- Midland, Ontario company specializing in avionics design and engineering

Federal Aviation Administration
- US regulatory authority for civil aviation

Landings
- an aviation resource featuring regulations, databases, and hundreds of links

Pen Turbo Aviation
- developers of the Turbo Caribou conversion

Transport Canada
- Canadian regulatory authority for civil aviation