Airspace Classes Flashcards

Prior authorization from Air Traffic Control (ATC) is mandatory for operating Unmanned Aerial Systems (UAS) in controlled airspace.

Class A: Ranges from 18,000' MSL to 60,000' MSL; not applicable for UAS operations.
Class B: Extends from the surface to 10,000' MSL surrounding major airports; tiered structure resembling an upside-down wedding cake.
Class C: Covers the surface to 4,000' above busy airports; has two tiers, also shaped like an upside-down wedding cake.
Class D: Extends from the surface to 2,500' above smaller towered airports.
Class E: Encompasses airspace between 18,000' MSL and the top of controlled airspace; includes federal airways and some airports.

Class A-E: Designated as controlled airspace requiring compliance with specific regulations.
Class G: Classified as uncontrolled airspace where no prior authorization is needed; spans from surface to 700', 1200', or 14,500'.

Prohibited Areas: Areas where flight is completely restricted for security, such as around the White House and Camp David.
Restricted Areas: Hazardous operations, like military exercises; entry requires permission.
Warning Areas: Located off the coast, these areas involve flight activities where the U.S. does not have full jurisdiction; begins 3 nautical miles from the coast.
Military Operations Area (MOA): Designated for military training; operational hours are specified on sectional charts.
Alert Areas: Characterized by high volumes of training or unusual activities; caution is advised but no restrictions are in place.
Controlled Firing Areas (CFA): Not shown on charts, operations are suspended if nearby aircraft are detected.

Military Training Routes (MTR): Special routes marked as gray lines on sectional charts for fast military flights; identified as "IR" (instrument routes) or "VR" (visual routes).
- Four-digit numbers indicate routes below 1,500' AGL (hazardous for UAS), while three-digit numbers show at least part of the route above this altitude.
Temporary Flight Restrictions (TFR): Imposed for events or circumstances requiring flight limitations; not typically depicted on sectional charts; examples include presidential movements and large public events.

Notices to Airmen (NOTAMs): Provide time-sensitive aeronautical information not available on sectional charts, including airport closures and TFRs; accessible via FAA website or flight briefing services.