> I don't know how long the black box can retain information, particularly given it's likely ~4km under the ocean and by now has been for years. Is there a rea

> I don't know how long the black box can retain information, particularly given it's likely ~4km under the ocean and by now has been for years. Is there a reason why black box telemetry isn't sent live during the flight? Even if the data the box records is too high frequency (too much data) to send over the air, I would have thought it would be possible to send it less frequently.