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Comment by plugger | Hacker News Reader

Correction Context: As of the beginning of 2020 all aircraft in the United States are required to have ADS-B out capability.

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This is not true. ADS-B OUT is required to fly in certain classes of airspace, above 10,000 feet, etc. -- anywhere a transponder is currently required. That's all.

That leaves a lot of airspace in the US. Someone flying his C182 in eastern Wyoming may not bother with it as he does not see any benefit. Here in western Oregon, I see the benefit (weather and traffic via ADS-B IN) and have equipped my aircraft even though I (mostly) avoid the airspace where it is required.

Thanks for the info. I had read it was becoming mandatory in the US in 2020. That was in the context of Australian regulations where aircraft still aren't forced to have ADS-B.

some exceptions: As such, we have concluded that the same aircraft excluded from the transponder requirement are excluded from the ADS-B Out equipage. Accordingly, an aircraft that subsequently has been installed with batteries or an electric starter would not be required to equip for ADS-B Out. The FAA may consider a technical amendment in the future to remove any confusion due to the discrepancy between the language in§ 91.215(a)(5) and§ 91.225(e).

https://www.faa.gov/about/office_org/headquarters_offices/ag...