Some have suggested that it stems from Hussenot's device, because it used film and "ran continuously in a light-tight box, ...
It's one of the most important pieces of forensic evidence following a plane crash: The so-called “black box ... voice recorder do? The cockpit voice recorder collects radio transmissions ...
It's one of the most important pieces of forensic evidence following a plane crash: The so-called “black box." There are ... The cockpit voice recorder collects radio transmissions and sounds ...