Class ALFA (A) airspace starts at 18,000'msl and stretches up to 60,000'msl
Mode C transponder is required
IFR flight plan is required
Class A airspace is not depicted on VFR sectionals.
Class Bravo (B) airspace
Class Bravo (B) airspace is depicted by a blue line circling the outer perimeter of class B airspace.
Class B airspace requires pilots to maintain a minimum visibility of 3 miles and remain clear of clouds
Altitudes of class B airspace are depicted on the chart by a number above another number with a line inbetween them
ex. 100/80. this means in order to be inside class B airspace you must be between the altitudes of 8,000' and 10,000' MSL. in that sector.
If you see the letters SFC below a number ex. SFC/100 this means class B in that sector goes down to the surface or ground in that sector.
Mode C Transponder is required inside and above class B airspace.
Class Charlie (C) airspace
Class Charlie (C) airspace is depicted by a magenta line that circles the outer perimeter of class C airspace.
Class C airspace requires a pilot to maintain a minimum visibility of 3 miles
the pilot must remain at least 500' below clouds 1,000' above clouds or 2,000' horizontally from clouds
the altitude limits of class C airspace are depicted with a number over a number with a line in between them ex. 66/42
these numbers tell pilots that they will be inside of class C airspace between the altitudes of 4200'msl and 6600'msl
Mode C Transponder is required inside and above class C airspace.
Class C airspace requires a pilot to maintain a minimum visibility of 3 miles
the pilot must remain at least 500' below clouds 1,000' above clouds or 2,000' horizontally from clouds
the altitude limits of class C airspace are depicted with a number over a number with a line in between them ex. 66/42
these numbers tell pilots that they will be inside of class C airspace between the altitudes of 4200'msl and 6600'msl
Mode C Transponder is required inside and above class C airspace.
Class Delta (D) airspace
Class Delta (D) airspace is depicted by a blue dashed line that circles the outer perimeter of Class (D) airspace
Class (D) airspace requires a pilot to maintain a minimum of 3 miles of visibility
a pilot must also remain 500' below clouds 1000' above clouds or 2000' horizontally from clouds.
The altitude limits for class (D) airspace are depicted by 4 cornered blue box (42) on this figure. 42 stands for 4200'msl.
The airspace in this figure stretches from the surface to 4200'msl.
Class (D) airspace requires a pilot to maintain a minimum of 3 miles of visibility
a pilot must also remain 500' below clouds 1000' above clouds or 2000' horizontally from clouds.
The altitude limits for class (D) airspace are depicted by 4 cornered blue box (42) on this figure. 42 stands for 4200'msl.
The airspace in this figure stretches from the surface to 4200'msl.
Class Echo (E) airspace
Class Echo (E) airspace is depicted on this picture by a magenta dashed line.
Class E airspace starts at the surface inside of this ring and stretches up to 18000'msl
Normally class E airspace starts at 1200'msl and is not depicted by any markings.
A pilot must maintain 3 miles of visibility and cloud clearances of 500' below 1000' above and 2000' horizontally
above 10,000'msl a pilot must maintain 5 miles of visibility and remain 1000' above 1000' below and 1 mile horizontally from clouds
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Class Golf (G) airspace
Class Golf (G) airspace starts at the surface and stretches up to 700'msl inside of this magenta circle.
Class G airspace starts at the surface and stretches up to 1200'msl outside of this magenta circle.
Pilots must maintain 1 mile of visibility and remain clear of clouds in class G airspace
At night in class G airspace pilots must maintain 3 miles of visibility and remain 1000' above 500' below and 2000' horizontally from clouds
Class G airspace starts at the surface and stretches up to 1200'msl outside of this magenta circle.
Pilots must maintain 1 mile of visibility and remain clear of clouds in class G airspace
At night in class G airspace pilots must maintain 3 miles of visibility and remain 1000' above 500' below and 2000' horizontally from clouds
Special Use Airspace
Military Operations Area (MOA)
Military Operations Area or (MOA) are areas in which military operations are regularly conducted. No special clearance is required to enter MOAs but pilots should verify with ATC or Flight Service that no hazardous activity is underway before entering an MOA. MMOAs are depicted by a magenta line with hashed lines on the inside that outlines the outer perimeter of the MOA.
Restricted Airspace
Entry into restricted areas is prohibited under certain conditions without a special clearance obtained from the controlling agency obtained directly or via ATC. Examples of restrictedareas include test firing ranges and other military areas with special hazards or containing sensitive zones.
Restricted areas are depicted by a blue line with hashed lines on the inside that outlines the outer perimeter of the restricted airspace
Restricted areas are depicted by a blue line with hashed lines on the inside that outlines the outer perimeter of the restricted airspace
Alert Area
Alert and Warning areas contain special hazards that pilots must take into consideration when entering the areas. They do not require a special Air traffic control clearance, but ATC can advise on the status of the area in some cases (whether or not hazardous activities are in progress).
Prohibited Area
Entry into prohibited Area is forbidden under all circumstances, except for an emergency. Prohibited areas exist over a handful of extremely sensitive locations, such as the White House. Prohibited Areas are depicted by a blue line with hashed lines on the inside marking the outer perimeter of the Prohibited Area It will also say "Prohibited Area" inside of the Prohibited airspace.
Terminal Radar Service Area (TRSA)
Terminal radar service area, or TRSA, is general controlled airspace wherein ATC provides radar vectoring, sequencing, and separation on a full-time basis for all IFR and participating VFR aircraft. Service provided at a TRSA is called Stage III Service. TRSA's are depicted on VFR aeronautical charts. Pilot participation is urged but is not mandatory.
TRSAs are depicted by a black line that circles the outer perimeter of the TRSA.
TRSAs show shelves of airspace similar to B airspace and C airspace.
TRSAs are depicted by a black line that circles the outer perimeter of the TRSA.
TRSAs show shelves of airspace similar to B airspace and C airspace.
Temporary Flight Restriction (TFR)
Temporarily restricted airspace is designated by Notice To Airmen (NOTAM) and used to provide a safe airspace environment for emergency aircraft operations in situations such as forest fires, disasters, or during Presidential movement.
