Airspace Classes Flashcards

Study Notes

UAS Operations in Airspace

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

Airspace Classes

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.

Types of Airspace

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'.

Special Airspace Designations

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.

Flight Restrictions

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.

Important Notices

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.

Description

Test your knowledge of airspace classes with these flashcards. Each card provides essential definitions and key facts about different types of airspace relevant to UAS operations. Perfect for anyone looking to enhance their understanding of air traffic regulations.