Which altitude extends from the surface to 10,000 ft MSL around the busiest airports?

Which altitude extends from the surface to 10,000 ft MSL around the busiest airports?

• A. 8,000 ft MSL
• B. 9,000 ft MSL
• C. 12,000 ft MSL
• D. 10,000 ft MSL

Answer: (D)

Busiest airports are surrounded by Class B airspace, which is designed to provide a highly controlled environment for managing heavy traffic. The vertical extent of Class B is from the surface up to a ceiling of 10,000 ft MSL, with the area often shaped into multiple shelves to fit around the airport layout. This means the airspace from the surface up to 10,000 ft MSL is what protects arrivals, departures, and general air traffic at those busy locations. The other options don’t fit because they don’t represent the standard overall vertical extent around the busiest airports—the top is 10,000 ft MSL, not 8,000, 9,000, or 12,000 ft.

Busiest airports are surrounded by Class B airspace, which is designed to provide a highly controlled environment for managing heavy traffic. The vertical extent of Class B is from the surface up to a ceiling of 10,000 ft MSL, with the area often shaped into multiple shelves to fit around the airport layout. This means the airspace from the surface up to 10,000 ft MSL is what protects arrivals, departures, and general air traffic at those busy locations. The other options don’t fit because they don’t represent the standard overall vertical extent around the busiest airports—the top is 10,000 ft MSL, not 8,000, 9,000, or 12,000 ft.