CNN CNN Newsroom March 31, 2014 00:06:00
Voice recorder in the sully flight, the one that handed in the hudson river, which was of course exposed to water and of course was recovered with no problem, never pinged. so they don't always ping. there's a lot of reason to believe the air france 447 devices never pinged because they sent the hydro foam pretty much right over where they found it two years later and didn't hear anything. a shred of evidence, they'll put it in the water and hope they hear something. >> they don't know. they don't know either. and listen, that's if the weather cooperates. they're not up against only weather. t...
Source: archive.org