For a category aircraft conducting a touch-and-go, how long after a Category H aircraft must it wait?

The correct answer is based on the standard procedures followed by air traffic control for managing the separation of aircraft types. In controlled airspace, particularly when dealing with touch-and-go maneuvers, there are specific time intervals that are crucial for ensuring safety and maintaining appropriate spacing between aircraft.

For a Category H aircraft, which is a heavy aircraft, a touch-and-go by a category aircraft must wait for 3 minutes before it can commence its maneuver. This time interval is designed to allow sufficient separation to account for the larger wake turbulence produced by the heavier aircraft and to reduce the risk of wake turbulence encounter, especially important in a busy airspace.

This precaution is enacted to ensure that the smaller category aircraft is far enough away from the heavy aircraft's flight path and wake turbulence, which can significantly affect smaller aircraft’s handling during flight. The 3-minute window is a standard operational guideline, reflecting best practices in air traffic management to maintain aircraft safety and efficiency during operations.