Questions and Answers
What is Class A airspace?
What is Class B airspace?
Surface to 10,000 ft surrounding the nation's busiest airports.
What is Class C airspace?
Surface to 4,000 ft.
What is Class D airspace?
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What regulates specific dimensions and exceptions for airspace?
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What is the minimum ceiling under VFR required to operate beneath in controlled airspace?
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What is the minimum altitude for operating unmanned free balloons in Class B, C, D, or E airspace?
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Generally, Class B airspace extends from surface to how many feet MSL?
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Aircraft within Class B airspace must operate in accordance with what procedures?
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Generally, Class C airspace extends to how many feet above the airport elevation?
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What is the maximum airspeed for aircraft operating within 4 nm of a Class C airport?
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Generally, Class D airspace extends to what height above the airport elevation?
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Class E airspace has no defined vertical limit except for what altitude?
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Federal airways, classified as Class E airspace, generally extend from what feet to, but not including, 18,000 ft MSL?
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What describes airspace where activities must be confined due to their nature?
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What airspace extends 3 nm outward from the US coast and may be hazardous?
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What is established to separate military training activities from IFR traffic?
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DOD has been authorized to operate aircraft at indicated speeds exceeding how many knots below 10,000 ft MSL within active MOAs?
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What informs pilots of areas with high training volumes or unusual aerial activities?
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What activities could be hazardous to nonparticipating aircraft if not controlled?
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How many advisory type services are available at selected airports?
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Study Notes
Class A Airspace
- Extends from 18,000 feet MSL up to FL 600
- Includes airspace 12 nautical miles offshore from the continental US and Alaska
Class B Airspace
- Ranges from surface to 10,000 feet MSL surrounding the busiest airports
- Configured as a surface area with two or more layers, resembling an upside-down wedding cake
- Requires ATC clearance to enter
Class C Airspace
- Extends from surface to 4,000 feet MSL
- Typically has a 5 nautical mile radius core area and a 10 nautical mile shelf area
- Shelf area extends between 1,200 and 4,000 feet above the airport elevation
Class D Airspace
- Extends from the surface to 2,500 feet MSL around controlled tower airports
- Requires two-way radio communication to enter
Regulations Reference
- Specific airspace dimensions and operational requirements can be found in the Code of Federal Regulations (CFR) (3-1-1)
Visual Flight Rules (VFR) Restrictions
- No operation beneath the ceiling of controlled airspace when the ceiling is below 1,000 feet
Unmanned Free Balloon Operations
- Cannot operate below 2,000 feet above the surface in Class B, C, D, or E airspace designated for an airport, unless authorized by ATC
Class B Airspace Operations
- Generally extends from the surface up to 10,000 feet MSL around major airports, characterized by high IFR operations or passenger enplanements
Class C Airspace Characteristics
- Typically from the surface to 4,000 feet MSL surrounding airports with control towers and radar approach controls
Speed Restrictions in Class C Airspace
- Aircraft must not exceed 200 knots when operating at or below 2,500 feet within 4 nautical miles of a primary Class C airport
Class D Airspace Operational Limits
- Ranges from surface to 2,500 feet MSL around airports with operational control towers
Class E Airspace Specifications
- Extends upward from either the surface or a designated altitude, with no defined vertical limit up to 18,000 feet MSL
Federal Airways
- Class E airspace areas that extend from 1,200 feet to just below 18,000 feet MSL unless specified otherwise
Special Use Airspace
- Contains areas where activities are confined, imposing limitations to protect non-participating aircraft
Warning Areas
- Airspace extending 3 nautical miles outward from the US coast, where hazardous activities could affect non-participating aircraft
Military Operating Areas (MOAs)
- Defined airspace for separating military training activities from IFR traffic
Speed Authorization in MOAs
- DOD aircraft may exceed 250 knots below 10,000 feet MSL in active MOAs
Alert Areas
- Marked on aeronautical charts to indicate high volumes of pilot training or unusual aerial activity
Controlled Firing Areas (CFAs)
- Areas where potentially hazardous activities can occur but are controlled to ensure safety for non-participating aircraft
Advisory Services
- Three advisory type services available at selected airports to assist pilots
Studying That Suits You
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Description
Test your knowledge with these flashcards on Class A, B, and C airspace from AIM Chapter 3. Each flashcard presents a key concept related to aviation airspace classification, essential for pilots and aviation enthusiasts. Perfect for study and review!
