What altitude is Class B airspace drone?

Class B airspace is defined as the airspace from the surface to 10,000 feet above the airport elevation (AGL) surrounding certain airports that have an operational control tower.



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Class B airspace extends from the surface to 10,000 feet above MSL. Class B surrounds the nation's busiest airports in cities like New York, Chicago, and Los Angeles. The layout of each Class B airspace area consists of an inner-core surface area and two or more upper layers resembling an upside-down wedding cake.

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In the 1900s, Hungarian physicist Theodore von Kármán determined the boundary to be around 50 miles up, or roughly 80 kilometers above sea level. Today, though, the Kármán line is set at what NOAA calls “an imaginary boundary” that's 62 miles up, or roughly a hundred kilometers above sea level.

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Remote ID also helps the FAA, law enforcement, and other federal agencies locate the control station when a drone appears to be flying in an unsafe manner or where it is not allowed to fly.

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To enter Class B airspace, all aircraft must meet the following requirements:
  • ATC clearance required to enter.
  • Establish and maintain two-way communication prior to entering and while in airspace.
  • Mode C transponder (within 30 nm, up to 10,000 feet msl)
  • Student pilot operations restricted.


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An ATC clearance is required for all aircraft that receive separation services within the airspace. Even though you may be operating below the Bravo, you should use caution against operating too closely to the boundaries, especially where the floor of the Class B airspace is 3,000 feet or less above the surface.

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The upper limit of the airspace should not exceed 10,000 feet MSL. However, high airport field elevation, adjacent high terrain, or operational factors may warrant a ceiling above 10,000 feet MSL.

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VFR aircraft must obtain an ATC clearance to operate in Class B airspace.

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