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Unless otherwise authorized by ATC, which airspace requires the appropriate Automatic Dependent Surveillance-Broadcast (ADS-B) Out equipment installed?

A

Within Class E airspace below the upper shelf of Class C Airspace.

B

Above the ceiling and within the lateral boundaries of Class D airspace up to 10,000 feet MSL.

C

Within Class G airspace 25 nautical miles from a Class B airport.✓ Correct Answer

Explanation

14 CFR 91.225(d)(2) requires ADS-B Out within 30 nautical miles of the airports in appendix D, section 1 (the Class B primary airports), from the surface up to 10,000 feet MSL, whatever the class of airspace, so Class G within 25 NM of a Class B airport is included. Class E below a Class C shelf is not covered, and the 'above the ceiling' rule applies to Class B and Class C, not Class D.

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