Class Bravo http://en.wikipedia.org/wiki/Airspace_class_(United_States) Bravo airspace Class D Class Charlie the current system of airspace class http://en.wikipedia.org/wiki/A... national airspace system typically extends to 1,200 feet Class Charlie http://en.wikipedia.org/wiki/Airspace_class_(United_States) national airspace system Bravo airspace the current system of airspace class the current system of airspace class the current system of airspace class http://en.wikipedia.org/wiki/A... Class G airspace Class D Class B http://en.wikipedia.org/wiki/A... the current system of airspace class