Even if you have PIA though, I don't thing you're restricted from flying internationally. I don't see any comment on the PIA page that says you can't fly internationally with it. Wouldn't you just revert to your original ICAO when doing international trips?
The FAA site made it seem like changing the codes was a non-trivial “process” that wouldn’t want to do regularly. You’d have to reprogram the transponder back to your canonical code, because other countries don’t have access to the private PIA conversion lookup tables. The private ICAO numbers might also conflict with other countries “number space”.
Maybe this is an easy thing, but most changes in aviation don’t seem “quick”.
It could be a procedural thing where after switching, the FAA won’t recognise your canonical one? That’s seems a little strange, though.
I read that too, but haven’t been able to find any source that wasn’t Sweeny on that. Without another source, I’m more inclined to believe that the plane is part of LADD, but not PIA (or isn’t anymore). And that the plane from the Sweeney tweet from February 2022 may have been another plane entirely. Maybe Musk’s plane was enrolled at one point, but it honestly doesn’t make much sense to me to have a plane enrolled in PIA.
I mean, if I had a private plane, I’d like to keep the option of flying it internationally, which you couldn’t do with an anonymized ICAO (again, according to my limited reading).
Also, given the limited number of PIA planes, it would be trivial to look for ICAO numbers that disappeared at one airport and then for a new private ICAO number to appear at the same airport. The system only makes sense from a privacy perspective if you don’t have continuous monitoring of the ADS-B transponders. As things currently exist, with a small number of PIA planes, it would be obvious to find new codes.