Airspaces
Special Use Airspaces
Acronyms and Definitions
Competition for Airspace
Wilderness Airspace
100

This is the altitude range where Class A airspace begins and ends in the United States.

What is 18,000 feet MSL to 60,000 feet MSL?

100

This airspace type is designated for national security and is completely off-limits to unauthorized aircraft.

What is a Prohibited Area?

100

This three-letter agency controls all aircraft operating in Class A airspace.

What is the FAA (Federal Aviation Administration)?

100

What are presidential or VIP flights?

 commercial aviation activity can be delayed or rerouted when high-priority government aircraft are operating nearby under a TFR.

100

This federal act created wilderness areas that limit overflights to reduce noise pollution.

What is the Wilderness Act of 1964?

200

This is the typical shape of Class B airspace

What is a multi-layered or tiered structure?

200

This type of area involves high-speed military training flights

What is a Military Operations Area

200

What is a TURSA?

What is non-mandatory airspace offers radar services in busy areas and is depicted on VFR sectional charts, but unlike Class C or B airspace, you don’t need clearance to enter it?

200

These unmanned aircraft systems are growing in number and challenging to keep out of controlled airspace 

What are drones (UAS)?

200

Wilderness airspace usually includes these types of areas managed by agencies like the NPS or USFS.

What are national parks, national forests, and wildlife refuges?

300

To enter Class C airspace, a pilot must establish this with ATC.

What is two-way radio communication?

300

This type of airspace warns pilots about unusual or hazardous activities

What is a Warning Area?

300

 These exist above 18,000 feet MSL and are designated with a "J" followed by a number?

What are Jet Routes?

300

the FAA uses this type of procedure to prioritize who gets to fly during high-demand situations like weather delays or emergencies.

What is air traffic flow management (ATFM)?

300

The FAA recommends that pilots fly no lower than this altitude AGL over designated wilderness areas.

What is 2,000 feet AGL?

400

This is the typical ceiling of Class D airspace.

What is 2,500 feet AGL

400

This type of special use airspace is where military activities are happening and aircraft must stay out unless cleared.

What is a Restricted Area?

400

What are Victor Airways?

These low-altitude federal airways use VOR navigation and are labeled with a "V" followed by a number.

400

These flights have the highest priority in U.S. airspace and can preempt commercial and private traffic if necessary.

What are emergency or medevac flights?

400

Although wilderness airspace isn’t legally restricted, pilots are expected to follow this kind of guidance.

What are voluntary noise abatement procedures?

500

This is the upper limit of Class E airspace.

What is up to but not including 18,000 feet MSL

500

This airspace cautions pilots of frequent, unusual activities like parachute jumping or flight training

What is an Alert Area?

500

What is a NOTAM?

What is Notice To Air Men?

500

Pilots flying under this type of rules must get specific routing and altitude assignments

What is IFR (Instrument Flight Rules)?

500

How many wilderness areas are there?

What is over 800 designated areas across 44 states and Puerto Rico?

M
e
n
u