It Pings Once a Second. Then It Stops.

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About this video

It pings once a second. Then the battery dies. Full video — Why Black Boxes Survive When Planes Don't: https://www.youtube.com/watch?v=1dH7zeQLJ9Y

From the video

Underwater locator beacons emit a 37.5 kHz pulse to help find black boxes, but they only work in water and have a limited battery life.
Underwater locator beacons emit a 37.5 kHz pulse to help find black boxes, but they only work in water and have a limited battery life.
It Pings Once a Second. Then It Stops.
Finding the signal
Finding the signal
Race against time
Race against time
It Pings Once a Second. Then It Stops.

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It Pings Once a Second. Then It Stops.