CPC Airspace Classification & Structure

Question 1

Which airspace class requires ATC clearance for all aircraft, both IFR and VFR?

Accepted Answer

Class A

Answer

Class A airspace, from 18,000 feet MSL to FL600, requires ATC clearance and IFR flight rules for all aircraft.

Question 2

What is the vertical limit of Class A airspace in the contiguous United States?

Accepted Answer

18,000 ft MSL to FL600

Answer

Class A airspace extends from 18,000 feet MSL up to and including FL600 over the contiguous US.

Question 3

Class B airspace is typically associated with which type of airport?

Accepted Answer

Busiest commercial service airports

Answer

Class B airspace surrounds the nation's busiest commercial service airports and requires ATC clearance for all operations.

Question 4

What communication requirement exists for aircraft operating in Class D airspace?

Accepted Answer

Two-way radio contact before entering

Answer

Aircraft must establish two-way radio communication with ATC before entering Class D airspace.

Question 5

What is the upper limit of Class G (uncontrolled) airspace when it underlies Class E airspace that begins at 1,200 ft AGL?

Accepted Answer

1,200 ft AGL

Answer

Class G airspace extends from the surface up to but not including the base of overlying Class E airspace, in this case 1,200 ft AGL.

(CPC) Certified Professional Controller Practice Test