G is everything in Air covers above all ground surface which is not A E B C D
A is Air/Airspace/Atmosphere, Jet/Superspeed Way, Commercial Airspace
E is Propeller/Highspeed/Express way
B C D encircle Airport Airspace, and must and should have tower
No Class F Airspace
B-International Busy (MIA)
C-International Non Busy (FLL)
D-Domestic only
G - Will have Airports & Runways, No one cares, uncontrolled, Private Runways
Only Class G does not have Tower, B, C, D have it
Navigation
North & South are Primary Direction/Reference - North/South directions ends at Earth Poles - Magnetism Supports N & S
East & West are Derivative/Secondary Direction/Reference - East/West never ends/Circle/Loop - Can't be taken for navigation
Axis
Lat/Lateral/Latitude/Side - Axis
Long/Longitude/Straight- North Pole starting point - Axis
Vertical - Axis
Lat - Draw line East to West, Size of Line varies
Long - Draw line North to south