2 or 3 mostly "illegal" hex values per plane

[wiedehopf]

FlightAware MLAT Network Announcement :

@dbaker

We would like to solve this together as a community rather than have the government solve it for us. So, we’ve come up with a better alternative – for the small number of aircraft on this list (less than 1% of flights, most of which are in the US, and none of which are airline flights), we’ll continue to feed MLAT results to PiAware & FlightFeeder, but with an anonymized Mode S code and no ident. This means your maps will look the same and this has no impact on ADS-B flights or other Mode S data you’re tracking locally, which are decoded and displayed entirely within your device, without the involvement of FlightAware’s servers. We’ll also ask that people limit their use of the FlightAware MLAT results to themselves.

It’s anonymized MLAT results.