Term
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Definition
Around an airport with a control tower not associated with class B or C airspace. |
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Term
Part Time Class D Airspace |
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Definition
Only classified as Class D airspace when Control Tower is operating. Becomes Class E or class E/G when tower not in operation. |
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Term
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Definition
Blue Dashed Circle on Sectional Chart |
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Term
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Definition
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Term
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Definition
152 - 1,000 ft above, 500 ft below, 2,000 ft horizontally. (D) |
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Term
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Definition
Consists of Surface Area and Shelf Area |
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Term
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Definition
5-NM Radius from primary airport extending from surface to 4,000 ft above airport. |
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Term
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Definition
5 to 10 NM from primary airport extending from 1,200 ft to 4,000 ft. |
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Term
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Definition
Area surrounding class C airspace. Not classified as class C. Normal Radius is 20 NM from Primary Airport. |
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Term
Class C Minimum Equipment |
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Definition
4096 Code Transponder, Mode C (altitude encoding) capability, and two way radio communication. |
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Term
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Definition
Two way radio communication prior to entering. No clearance required. |
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Term
Control Tower Communication |
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Definition
Two way radio communication required for landings and takeoffs at all tower controlled airports, regardless of weather. |
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Term
Class D Satellite Airport Communication |
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Definition
Must establish two way radio communication with primary airports control tower. |
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Term
Class C Satellite Airport Communication |
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Definition
Must contact ATC as soon as practical after takeoff. |
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Term
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Definition
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Term
Class C Flight Visibility |
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Definition
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Term
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Definition
152 - 1,000 ft above, 500 ft below, 2,000 ft horizontally. (C) |
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Term
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Definition
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Term
Class B Flight Visibility |
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Definition
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Term
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Definition
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Term
Class E Color Indicator - Lower Limit at Surface |
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Definition
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Term
Class E Flight Visibility Below 10,000 MSL |
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Definition
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Term
Class E Flight Visibility Above 10,000 MSL |
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Definition
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Term
Class E Cloud Clearance Above 10,000 MSL |
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Definition
111 - 1,000 ft above, 1,000 ft below, 1,000 ft horizontally. |
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Term
Class E Cloud Clearance Below 10,000 MSL |
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Definition
152 - 1,000 ft above, 500 ft below, 2,000 horizontally (E) |
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Term
Class G Flight Visibility All altitudes, Day |
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Definition
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Term
Class G Flight Visibility all altitudes, Night |
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Definition
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Term
Class G Cloud Clearance Above 1,200 AGL, Day or Night |
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Definition
152 - 1,000 ft above, 500 ft below, 2,000 ft horizontally. (GA) |
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Term
Class G Cloud Clearance Below 1,200 AGL, Night |
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Definition
152 - 1,000 ft above, 500 ft below, 2,000 ft horizontally. (GB) |
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Term
Class G Cloud Clearance Below 1,200 AGL, Day |
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Definition
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Term
Restricted Area Color Indicator |
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Definition
Wide blue line of hash marks and sharp outer edge. |
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Term
Prohibited Area Color Indicator |
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Definition
Wide blue border with sharp outer edge. |
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Term
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Definition
All navigable airspace not otherwise classified. |
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Term
Class E Lower Limit 700 ft AGL Color Indicator |
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Definition
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Term
Class E Lower Limit 1,200 ft AGL Color Indicator |
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Definition
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Term
Class E Lower Limit 1,200 ft Federal Airways Color Indicator |
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Definition
Blue lines between VOR facilities labeled with V followed by numbers. ex. V-120 |
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Term
Class E Lower Limit Specific Altitude |
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Definition
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Term
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Definition
Indicated on chart within each circle and expressed in 100's of feet MSL. Top limit over lower limit. |
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Term
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Definition
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Term
Class B Minimum Equipment |
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Definition
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Term
Military Training Routes (MTR) |
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Definition
Established below 10,000 ft MSL for operations at speeds in excess of 250 kts. |
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Term
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Definition
Existence of unusual, often invisible hazards to aircraft, such as aerial gunnery, guided missiles, etc. |
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Term
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Definition
Contain activity that may be hazardous to nonparticipating aircraft, such as aerial gunnery, guided missiles, etc. Extends 3 SM out from US Coast. May be over domestic or international areas. |
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Term
Military Operations Areas |
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Definition
Areas of military training activities. Contact FSS to determine hours of operation. Contact controlling agency to gain clearance. |
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Term
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Definition
Shown after or under runway length. |
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Term
Controlled Airport Tower Frequency |
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Definition
Shown under airport name and above runway information. |
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Term
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Definition
Non Federal Control Tower Airport. |
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Term
Star shaped Symbol Above Airport Symbol |
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Definition
Indicates rotating Beacon from sunset to sunrise. |
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Term
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Definition
Airport Lighting limitations, refer to A/FD. |
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