Hi Old Smokey:
Feel free to use the illustration (or any derivative of it) in any work you create. I drew the illustration for the Honeywell Pilot Guide for the Primus Apex avionics system installed in the new Series 400 Twin Otter. If you would like the original Adobe Illustrator file, send me a private message and I will get it to you.
The underlying cartography is the work of Nav Canada (it shows the Canadian Southern and Northern domestic airspace), I used it with their permission.
Michael