What is the typical speed range for CAT 3 aircraft?

The typical speed range for CAT 3 aircraft is correctly represented by the option indicating 300-550 knots. This classification refers to Category III aircraft, which are typically larger commercial airliners designed for high-speed operations. These aircraft are built for efficiency at cruising altitudes, where they operate within the higher velocity ranges.

When considering the speed capabilities of various aircraft categories, those classified as CAT 3 are generally equipped to handle a wider operational speed envelope compared to smaller or lighter aircraft. The 300-550 knots range is indicative of their cruising speeds during ascent, descent, and level flight, particularly when flying at altitude where aerodynamic efficiency is optimized.

Thus, understanding the operational characteristics of CAT 3 aircraft, including their typical speed range, is crucial in air traffic control for effective traffic management and ensuring safe separations between different types of aircraft in the airspace.