The point I'm making is that long before we tracked iPhones it's been important to know where planes are.
I may be of the misconception that people who fly planes, design planes, and passengers on planes expect that someone knows within a few feet where the plane is because the technology is there.
A long time ago, someone did come up with the idea of implementing a black box to help understand wtf happens post accident.
I can't comprehend 'we just don't do that' when the lives and a plane are at stake.
The technology is indeed there but if a plane disintegrates in mid-air due to an explosion it's highly possible that the device may not survive. Even if it does it may not survive slamming into the ocean at terminal velocity. Even if it does it may not survive sinking into the ocean if it sprung a leak or is simply too heavy due to the weight of the batteries it has to maintain. And even if it survives all that the batteries may have just gone out, sending a signal to a satellite takes a significant amount of power.
The reason we can track cell phones is because they are in a cell network of towers. If you go off into the mountains we can't track your iphone either.
The black box is not invincible either, in many cases they are destroyed or the data is irretrievable.
As for the "we just don't do that" when the lives and plane are at stake, well that's the free market for you. It took government regulation to force US carriers to employ the black boxes in the first place. A lot of these countries just don't force their airlines to comply with any kind of standards. Fortunately there are international aviation regulations that they have to meet in order to fly to numerous other countries but even then if the home country isn't doing the inspections then the planes might not have what we expect them to have.
It's why I do a lot of research into which middle east airlines I fly out of here.