ORIGINAL: eddieC
SP,
I did a search on the FAA National Airspace System website, and your term 'non-navigable airspace' does not exist other than in your head. This is what I turned up:
As you are a master of half-truths, trollery and innuendo, are you sure you weren't a Washington lawyer at some point?<br type="_moz" />
Of course not, it has nothing to do with airspace control.
http://www.law.cornell.edu/uscode/text/49/40102