2 ms·
> Also - not all planes broadcast ADS-B. Aircraft that do not broadcast ADS-B have not been airworthy in the US since January 2020.
by ohazi 6y ago
> Also - not all planes broadcast ADS-B.
Aircraft that do not broadcast ADS-B have not been airworthy in the US since January 2020.
- tjohns 6y agoOnly in airspace where a transponder is required. Most airspace in the US does not need a transponder unless you're near a major airport, and therefore doesn't require ADS-B. Aircraft without an electrical system are also exempt from the transponder requirement.