FAA Airspace Classification 1 — Questions and Answers
Question 1: On a sectional chart, Class B airspace is depicted by what type of line?
- Dashed magenta line
- Solid magenta line
- Solid blue line (Correct answer)
- Dashed blue line
Correct answer: Solid blue line
Class B airspace boundaries are shown by solid blue lines on sectional charts, with floor and ceiling altitudes listed in the format ceiling/floor.
Question 2: What is the floor altitude of Class A airspace in the contiguous United States?
- 14,500 feet MSL
- 18,000 feet MSL (Correct answer)
- 12,500 feet MSL
- 24,000 feet MSL
Correct answer: 18,000 feet MSL
Class A airspace in the contiguous United States begins at 18,000 feet MSL and extends up to and including Flight Level 600.
Question 3: On a sectional chart, what symbol marks the floor of Class B airspace segments?
- The lower number in the altitude box (Correct answer)
- A dashed blue line
- The letter 'B' in the airspace segment
- SFC printed inside the segment
Correct answer: The lower number in the altitude box
Within Class B airspace segments on sectional charts, altitudes are shown as ceiling/floor, where the lower number is the floor of that segment.
Question 4: Which class of airspace requires an ATC clearance before entry, even in VMC conditions?
- Class C
- Class B (Correct answer)
- Class D
- Class E
Correct answer: Class B
Class B airspace requires an explicit ATC clearance to enter regardless of weather conditions or the type of flight being conducted.
Question 5: On a sectional chart, which symbol indicates a Class D airspace boundary?
- Solid blue circle
- Dashed blue circle (Correct answer)
- Solid magenta circle
- Dashed magenta circle
Correct answer: Dashed blue circle
Class D airspace around airports with an operating control tower is depicted by a dashed blue circle on sectional charts.
Question 6: What does 'SFC' indicate when found inside an airspace segment symbol on a sectional chart?
- Special flight conditions apply
- The airspace floor is at the surface (Correct answer)
- Simulated flight corridor
- Standard frequency channel
Correct answer: The airspace floor is at the surface
'SFC' inside an airspace segment on a sectional chart means the airspace extends from the surface (ground level) upward to the indicated ceiling.
FAA Airspace Classification 1
On a sectional chart, Class B airspace is depicted by what type of line?