The vertical limits of that portion of class e airspace designated as a federal airway over magee airport are 1200 feet AGL to 17999 feet MSL
Class E airspace is controlled airspace that is not classified as Class E airspace Class A, B, C or D. Most of the airspace over the United States is designated as Class E airspace. Cross-sectional maps and other maps showing all positions of Class E airspace with bases below MSL 1,500 feet. In areas where chart does not represent Class E facilities, Class E starts at 1,500 feet MSL.
In most areas, the base of Class E airspace is at 1,200 feet AGL. In many other areas, the basis of Class E airspace is or 700 feet AGL surface. Some E-layer spaces start at the MSL elevation depicted on the graph, instead of the AGL elevation.
Class E airspace generally extends to 18,000 feet MSL (lower limit of Class A airspace). All airspace over FL 600 is Class E airspace.
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