cynical_spar

This is not correct. There is no hard requirement for GPS nor anything that requires “something that transmits its location”. There is also no requirement for a flight plan or communication with ATC.

I can take off from an uncontrolled airport with no GPS, no transponder, no plan, and no radio and as long as I’m in the correct airspace I’m completely legal and within my right to do so.

There are some differences with these rules through out the world.

All commercial planes have it at this point. And most part 91 airplanes (General Aviation) have it at this point. Without ADSB you cannot fly in or near class A, B, or C airspace and must stay below 10,000 feet. Which largely makes having an airplane useless for most people.

There are still airplanes flying that have no electrical system but even then some of them have retrofitted a system.

You are down playing it way too much. It’s way better than nothing. You also don’t seem to understand how ADS-B works. There are two kinds ground to air and air to air, air to air latency is measured in milliseconds and in the case of converging airplanes the latency would be near zero since you are receiving the other airplanes broadcasts directly.

Having TCAS in small GA airplanes is never going to be possible. The cost is too high and the performance differences are too great. You don’t need an RA to make a decision, TAs are completely sufficient in GA and ADS-B works quite well for that.

Not sure why you would care about this while flying formation. TCAS isn’t helping you there either.

https://www.researchgate.net/publication/343689163_A_study_o...

We do, it’s called ADS-B. It’s required in class C, B, and A airspace. As well as in class E above 10,000 feet and within a mode C veil.

Unfortunately we have thousands of airplanes that do not have electrical power so it would be very difficult to require it everywhere within the US.

Yes, because there are usually no less then 4 separate ways to turn it off (AP disconnect, trim switch, circuit breaker(s), servo override) and this includes small GA airplanes. The autopilot does not fly the airplane on intuition. It flies based on the way the pilot programmed it, malfunctions are expected and trained for and memory items are required for quick disabling of malfunctioning systems.

I’m a pilot and airplane owner.

There is a homeassistant integration that might work if you really want that.

https://www.home-assistant.io/integrations/nexia/