Which AAC category includes speeds from less than 91 knots?

AAC Category A specifically includes aircraft that have a maximum takeoff weight of up to 12,500 pounds and generally operates at speeds of less than 91 knots. This categorization is important for airport operations, as it helps in determining appropriate separation and taxiing procedures at airports. Category A encompasses smaller, lighter aircraft that are typically used for general aviation, training, and certain regional operations. Understanding this classification is crucial for ensuring safety and efficiency in airport operations, as different categories face varying operational requirements based on their performance characteristics.

In contrast, Categories B, C, and D include larger and faster aircraft, which operate at higher speeds than those categorized in A. Each of these categories has distinct maximum takeoff weights and speed thresholds, emphasizing the variety of aircraft types and their operational needs within the aviation system.