Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Classes of Airspace


Class A From 18,000 MSL up to and including FL600 and waters within 12 NM of the US coast. IFR only
Class B SFC-10,000 MSL around busy airports. ATC clearance required and cleared A/C receive separation services. VFR = clear of clouds.
Class C SFC-4000 MSL, 5 NM radius, a circle of 10 NM radius no lower than 1200' up to 4000' above airport elevation and an outer area not charted. 2 way comms, ATC providing service prior and after. VFR only separated from IFR.
Class D SFC-2500 MSL, airports with tower. Arrival extensions may be D or E airspace. 2 way comm before and after, VFR no separation services.
Class E-1 Controlled airspace not A,B,C or D airspace. When designated as a surface area it will contain all instrument procedures. Has federal airways, airspace beginning at either 700 or 1200' AGL to transition from terminal to en route.
Class E-2 En route and offshore areas designated below 18,000' MSL. Unless lower, begins at 14,500' MSL and waters within 12 NM to but not including 18,000' MSL and above FL600.
Class G Not A,B,C,D or E
Surface Area definition Airspace contained by the lateral boundary of Class B,C,D or E airspace.
RCA Class D SFC-and including 5800' MSL and 5.9 mi radius.
RAP (Rapid City) Class D SFC-and including 5700' MSL and 4.4 mi radius
EAFB Approach Airspace SFC-and including 16,00' MSL, approximate range of 40 miles. Bordered by ZDV Sector 31.
Created by: tx4ever80