What is the maximum allowable airspeed in Canada below 10,000 feet?

The maximum allowable airspeed in Canada below 10,000 feet is 250 knots. This regulation is in place primarily for safety reasons and to ensure that aircraft operations maintain a level of control and avoid potential conflicts with other air traffic. The limit helps prevent excessively fast speeds during critical phases of flight, such as takeoff and landing, where altitude and maneuverability are essential for safety.

The regulation is aligned with standards established in many countries to maintain a consistent and predictable airflow in lower airspace, where general aviation and commercial aircraft typically operate. This altitude restriction helps in managing and coordinating traffic effectively, as lower airspace often contains a mix of different types of aircraft flying at lower speeds. Other speed limits that could be proposed wouldn't align with these established safety protocols, making 250 knots the standard for that altitude range in Canada.