class e airspace造句

For example, consider Class E airspace.
It was one of few airports in the country to have Class E airspace and a control tower.
When class E airspace begins at altitudes other than AGL, AGL, or MSL, a delimiting border resembling links in a chain in dark cyan separates the areas, and specific altitudes are marked within or near them.
Class E airspace is the airspace that lies between Classes A, B, C, and D . Class E extends from either the surface or the roof of the underlying airspace and ends at the floor of the controlled airspace above.
TRSAs will encompass a primary airport with a class " D " designation and the TRSA will be above other controlled airspace ( Typically Class E Airspace ) with a typical floor of 700 feet or 1, 200 feet AGL ( Above Ground Level ).
It's difficult to find class e airspace in a sentence. 用class e airspace造句挺难的