airspace hierarchy
 

* 1.Within the airspace classes, there is a hierarchy and, in the event of an overlap of airspace: Class A preempts Class B. Class B preempts Class C, Class C preempts Class D, Class D preempts Class E. and Class E preempts Class G. (FAA4)

English Related Words* a language encouraging program hierarchy

* airspace

* airspace caution area

* airspace control

* airspace control area

* airspace control authority

* airspace control boundary

* airspace control equipment

* airspace control plan

* airspace control system

* airspace danger area

* airspace prohibited area

* airspace reservation

* airspace restricted area

* airspace restrictions