Final answer:
The speed limit for aircraft below 10,000 feet MSL is 250 knots, which ensures safe and efficient air traffic management at lower altitudes.
Step-by-step explanation:
The speed limit below 10,000 feet Mean Sea Level (MSL) for aircraft is 250 knots. This speed limit is established by aviation regulatory bodies to ensure safety and efficient air traffic management.
The speed of 250 knots is equivalent to about 288 miles per hour (mph) or 463 kilometers per hour (km/h). Pilots are required to adhere to this speed limit to avoid collisions and other potential risks associated with high-speed flying at lower altitudes where air traffic is denser.