What is the speed restriction below 10,000' MSL?

The speed restriction below 10,000 feet Mean Sea Level (MSL) is 250 knots. This regulation helps maintain safe and orderly operations in busy airspace, particularly near airports where aircraft may be departing or arriving. The 250-knot limit reduces the likelihood of wake turbulence issues and allows for more manageable separation between aircraft, particularly as they approach or depart from crowded airspace around major airports.

As altitude increases, the increased airspace volume allows for higher speed limits to accommodate faster aircraft, but below 10,000 feet, the focus is on safety and minimizing potential conflicts. Understanding this regulation is essential for safe flight operations and communication among pilots and air traffic control.