What does Class G airspace stand for and how is it controlled?
Think ‘Go for it.’ It is uncontrolled airspace with no separation service for IFR and no mandatory communication requirements.
Who can use Class G airspace?
Pilots of any certification may use it.
Is Class G airspace shown on sectional charts?
No, it’s not directly depicted; it’s the default if no controlled airspace is shown.
Where does Class G airspace typically extend to?
It extends up to the base of Class E airspace.
What does a magenta vignette on a sectional chart signify about Class G?
Class G extends from ground to 699 ft AGL.
What does a blue vignette on a sectional chart signify about Class G?
Fuzzy side: Class G up to 1200 ft; Solid side: Class G up to 14,500 ft.
What does Class E airspace stand for?
Think ‘Elsewhere’ – it is controlled but the least restrictive.
Do VFR aircraft need clearance to fly in Class E?
No, as long as visibility and cloud clearance minimums are met.
What are the transponder requirements for Class E?
Mode C transponder + ADS-B Out required above 10,000 ft MSL.
Where does Class E airspace generally begin and end?
Begins at 700 or 1200 ft AGL, ends at 18,000 ft MSL, restarts above 60,000 ft MSL.
What is radar vectoring?
ATC instructs heading using the magnetic compass for navigation to a point.
What service does Class E provide to VFR aircraft (if bandwidth allows)?
Safety alerts, traffic advisories, and radar vectoring.
What does Class D airspace surround?
Airports with an operating control tower.
What communication is required for Class D?
Two-way communication must be established and call sign acknowledged before entry.
What happens when the Class D tower closes?
It reverts to Class E or Class G airspace.
What are the typical dimensions of Class D airspace?
From surface to 2500 ft AGL, usually 4–5 nm around airport.
How is Class D depicted on sectional charts?
By blue dashed lines.
What kind of airport is Class C airspace associated with?
Large towered airports with radar service and moderate IFR volume.
How is Class C depicted on charts?
By solid magenta lines.
What are the two layers of Class C airspace?
Core: 0–4000 ft AGL, 5 nm radius; Shelf: 1200–4000 ft AGL, 5–10 nm radius.
What are the equipment requirements to enter Class C?
Mode C transponder, ADS-B Out, and two-way communication.
When can you enter Class C airspace?
After ATC acknowledges your call sign.
What type of airports are in Class B airspace?
Major airports with high-volume traffic.
What equipment and clearance is required for class B?
Mode C transponder, ADS-B Out, two-way communication, and explicit ATC clearance (‘cleared to enter’).
