Hi,
AF447 Search ... that's the header and it's the point of this theatre..
The improvement must be on the device(s) who permit to detect where a plane (or the black boxes) are located after a crash .. and in particular when the crash occur in remote aera or at sea.
The actual black boxes record already enough parameters for understand the events at work in a crash.
Sending myriad of parameters by sattelite is not realistic or economically feasable.