https://www.faa.gov/nextgen/programs/adsb/faq/bryancobb wrote:My gut feeling is that "ADS-B EQUIPPED" will be an exception to that rule of thumb since it is a requirement.
From the FAA ADS-B FAQ:
On January 1, 2020, when operating in the airspace designated in 14 CFR § 91.225 (outlined below) you must be equipped with ADS-B Out avionics that meet the performance requirements of 14 CFR § 91.227. Aircraft not complying with the requirements may be denied access to this airspace.
Under the rule, ADS-B Out performance will be required to operate in:
1. Class A, B, and C airspace.
2. Class E airspace within the 48 contiguous states and the District of Columbia at and above 10,000 feet MSL, excluding the airspace at and below 2,500 feet above the surface.
3. Class E airspace at and above 3,000 feet MSL over the Gulf of Mexico from the coastline of the United States out to 12 nautical miles.
4. Around those airports identified in 14 CFR part 91, Appendix D.
The ADS-B Out rule does not apply in the airspace defined in items 2 and 4 above for any aircraft not originally certificated with an electrical system or that has not subsequently been certified with such a system installed, including balloons and gliders. For additional requirements for using the exception for item 4, please refer to CFR 91.225 section (d) for the requirements.