The technology not only exists for live streaming Qatar is apparently already doing so
https://runwaygirlnetwork.com/2015/1...lack-box-data/
'Always on' broadband links to aircraft are available that would allow continual streaming of DFDR and CVR data. As soon as the aircraft plugs in at the gate the stored FOQA, DFDR and CVR plus any maintenance data could be transferred over terrestrial links.
It is not a technical issue, it is a human issue. There is considerable pressure to
not allow access to recordings especially from the cockpit. Misgivings become even more pronounced when video recordings of the cockpit are proposed. These misgivings are given a significant boost by company managers and beancounters perusing FOQA data to try to identify supposed flight crew short comings. So flight crews '
know' that they cannot trust management.
Who knows; if this distrust in airlines was not there MH370 may not be missing.
A sad state of affairs