What is the maximum speed authorized by Title 14 CFR for aircraft below 10,000 feet MSL?

The maximum speed authorized for aircraft operating below 10,000 feet mean sea level (MSL) is 250 knots. This regulation is part of Title 14 of the Code of Federal Regulations, which governs aviation in the United States and provides guidelines to ensure safe and efficient air traffic management. The limitation is in place primarily to reduce the risk of wake turbulence and to manage noise levels in populated areas, as well as to facilitate the efficient flow of air traffic near airports.

While the maximum speed increases at higher altitudes, keeping aircraft below this speed at lower altitudes helps maintain a safer operating environment, particularly in busy airspace and near airports where many aircraft are operating simultaneously. This regulation is an essential aspect of aviation safety and is important for pilots to adhere to in order to comply with standard operating procedures and maintain overall flight safety.