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Does it work at 1000 MPH?

Plus they are talking about voice data, not just the coordinates.

I am just countering the airlines straw-man argument that a solution will cost >$50,000

For about 0.5% of that cost they could have a solution that will help people find the real blackbox.

Commercial airliners have many existing systems that'll tell you where they are. The problem is they tend not to continue working effectively 3000m below sea level after the aircraft has broken up. Neither do cheap GPS tracker systems.

The airlines' cost argument against investing in the technology is actually based on exactly the argument you're making: black boxes are usually very easy to locate.

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