What is the altitude range for Class A airspace?

Class A airspace is defined by specific altitude ranges that are crucial for managing high-altitude air traffic. The correct range for Class A airspace is between 18,000 and 60,000 feet. This airspace category is intended for IFR (Instrument Flight Rules) operations, where air traffic is heavily regulated to ensure safe separation between aircraft.

Pilots operating in Class A airspace must be certified for instrument flight and are typically under the jurisdiction of Air Traffic Control (ATC), which provides instructions and ensures that aircraft are adequately separated. Because of the level of control and the density of air traffic at these altitudes, this airspace serves as a critical corridor for commercial airline routes and other high-altitude operations.

The other altitude options do not fall within the definition of Class A airspace: below 10,000 feet characterizes lower airspace categories, while above 60,000 feet is not typically classified under standard airspace definitions and generally pertains to specific military or high-altitude operations. The range of between 14,000 and 18,000 feet is a transition area, representing the boundary between Class E airspace and Class A airspace. Understanding these classifications is vital for safe aviation practices and compliance with air traffic