PRIVATE - AIRSPACE

What is the difference between controlled and uncontrolled airspace?
In controlled airspace ATC can provide radar services, whereas in uncontrolled it possible that they cannot provide radar services.

Where does class A airspace exist?
It starts at 18,000 feet and goes up to 60,000 feet.

What requirements need to be met to enter class A airspace?
You must be on an IFR flight plan, and have an instrument rating.

How is class B airspace depicted on a VFR chart?
Class B is indicated by a blue solid line.

How high does class B airspace typically go up to?
Class B airspace typically extends from the surface up to 10,000 feet MSL.

What is the magenta circle around class B airports for?
This circle indicates that any aircraft operating within this area are required to have an altitude reporting transponder on board and operating.

What are the clearance requirements to get into class B airspace?
Prior to entering the airspace you must receive a class B clearance, have a transponder with mode C in operation, maintain 3 SM visibility, and remain clear of the clouds

When receiving a class B clearance, what must be included in the clearance?
At a minimum you must hear your call sign and that you are "cleared into class bravo airspace." Also you will more than likely be given a route and altitude to fly while in class B airspace.

Could you depart or arrive at an airport located within the mode C veil without an operating transponder?
Yes, as long as you notify the governing ATC facility about your situation at least 1 hour prior to your arrival/departure.

How is class C depicted on a VFR chart?
Class C is depicted by a solid magenta line.

What are the requirements to enter class C airspace?
You must establish two way radio communication, have a transponder with mode C in operation, maintain at least 3 SM visibility, and stay at least 500 feet below/1,000 feet above/2,000 feet horizontally from any cloud.

How is class D depicted on a VFR chart?
Class D is depicted by a dashed blue line.

What are the requirements to enter class D airspace?
You must establish two way radio communication, maintain at least 3 SM visibility, and stay at least 500 feet below/1,000 feet above/2,000 feet horizontally from any cloud.

How is class E depicted on a VFR chart?
Class E is depicted in 5 different ways. Dashed magenta lines indicate class E starts at the surface, a faded magenta line indicates class E starts at 700 feet AGL on the lighter side of the line, a faded blue line indicates class E starts at 1,200 feet AGL on the lighter side of the line, a blue zipper line indicates class E starts as depicted on the chart, and if there's not a depiction of class E, then class E starts at 14,500 feet MSL.

What are the weather requirements to enter class E airspace?
If flying below 10,000 feet MSL, the weather requirement is 3 SM visibility and 1,000 feet above/500 feet below/2,000 feet horizontal distance from any cloud. If flying above 10,000 feet MSL, the weather requirement is 5 SM visibility and 1,000 feet above/1,000 feet below/1 SM horizontal distance from any cloud.

What difference does it make if you're in class G as compared to class E airspace?
Besides weather requirements, in class G you may not be provided radar services.

What are the weather requirements to enter class G airspace?
During the day below 1,200 feet AGL you must maintain 1 SM visibility and remain clear of the clouds. During the day above 1,200 feet AGL and below 10,000 feet MSL you must maintain 1 SM visibility and remain 500 feet below/1,000 feet above/2,000 feet horizontally from any cloud. During the night below 10,000 feet MSL you must maintain 3 SM visibility and remain 500 feet below/1,000 feet above/2,000 feet horizontally from any cloud. And day or night above 10,000 you must maintain 5 SM visibility and remain 1,000 feet below/1,000 feet above/1 SM horizontally from any cloud.

What is the weather requirement to do pattern work at night at a class G airport?
You must maintain 1 SM visibility and remain clear of any clouds when operating within 1/2 SM of the runway.

You must have all the following airspace weather requirements memorized.


What airspeed limitations are you confined to?
When operating below 10,000 MSL the airspeed limitation is 250 KIAS. When operating below 2,500 feet AGL and within 4 NM of class D or C, or when operating below B airspace the airspeed limitation is 200KIAS. And when operating above 10,000 MSL, you must stay below 1.0 mach.

What seven places require a transponder?
You will need a mode C transponder when above 10,000, within class B, within the lateral limits of class B, in class C, within the lateral limits of class C, within the 30 NM veil of class B, and across an ADIZ.

Why is Mode C required above 10,000, and why does the visibility increase to 5SM?
Since aircraft can travel faster above 10,000 feet, ATC needs to know aircraft altitudes to more efficiently separate aircraft, and pilots need better visibility to better avoid aircraft traveling at faster airspeeds.

Can you fly into an active military operating area without ATC clearance?
Yes, but it is always advisable to contact the controlling agency to determine the status of the MOA, and if the MOA is active, request radar services when flying through the MOA.

Can you fly into an active warning area without ATC clearance?
Yes, warning areas do not require a clearance.

Can you fly through restricted airspace?
No, you must obtain permission prior to entering restricted airspace.

How do you determine the altitude of a restricted area?
You would need to reference the side panel of your aeronautical chart for this information.

Can you fly into prohibited airspace?
No, you are not allowed to operate in prohibited airspace.

What is a TRSA?

TRSA is a terminal radar service area. These areas are posted to inform pilots that they should contact ATC when flying through them.