Question

Which class of airspace extends into high-level airspace?

a) Class B
b) Class C
c) Class D
d) Class A

Answer 1

Class A airspace is the airspace that extends into high-level airspace, beginning at 18,000 feet MSL and extending to Flight Level 600.

Step-by-step explanation:

The class of airspace that extends into high-level airspace is Class A. Class A airspace typically begins at 18,000 feet Mean Sea Level (MSL) and extends upwards to and including Flight Level 600 (60,000 feet MSL). It is the only class that is completely IFR (Instrument Flight Rules) and covers the entire United States including its coastal waters and the airspace above them. Pilots must be instrument-rated, adhere to IFR flight plans, and receive air traffic control clearance to enter Class A airspace. In contrast, Class B, C, and D airspaces are designed for lower altitudes and surround specific airports to manage and control traffic in those areas.