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AirspaceQuestion 136 of 934

Unless ATC authorizes otherwise, which equipment must an aircraft have to operate in Class B airspace?

  1. Two-way radio and a VOR receiver with DME installed
  2. Two-way radio and a transponder without altitude reporting
  3. Radio, altitude-reporting transponder, and ADS-B Out
  4. A transponder with altitude reporting and ADS-B In only
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Correct answer: Radio, altitude-reporting transponder, and ADS-B Out

Class B needs a two-way radio, a Mode C type transponder with altitude reporting, and ADS-B Out.

Source: Aeronautical Information Manual (FAA, Basic with Change 3, 9 July 2026), AIM 3-2-3 Class B Airspace, page 180

Practice airspace

Questions last reviewed: 18 October 2026