4 ms·

Confirmed by a tower? The tower's tracked it with radar. That's how they called out the height. There would be logs.

• phire 5y ago
  Most radar can't tell the height of an object unless it has a transponder reporting it's altitude.
  • himinlomax 5y ago
    It's not necessarily that they can't, it's that the precision in altitude is very poor unless the target is close to the radar. This happened with MH370, the data released in the investigation shows altitude values varying wildly by 10000 feet in a short time. Of course conspiracy theorists picked up on that as proof of lizard people involvement.
    • phire 5y ago
      No commercial aviation radar system even tries to output non-transponder altitude infomation. Many are secondary only and don't even pick up targets without transponders. Military primary radar, like the one that picked up MH370, obviously can. But I don't think any of those are designed for really accurate altitude measurements. That job is usually done with targeting radar which (at the expense of not being able to see multiple targets) can lock a single target and get it's exact position.