In response Bea Benjamin to her Publication
not sure if this is the exact patent number the man is refering to ...but it looks promising...
https://patents.google.com/patent/WO2009117134A2/en
In response Patriotgirl17 1776 to her Publication
But the Malaysian flight was 2014.
True ...so this is probaly not the exact one but demonstrates that the technology is out there.
Here is an example being developed in Canada: https://vimeo.com/652221887