Deep Water - Air France Flight 447 Crash

I guess the biggest story at the moment is the Air France Flight 447 crash because 228 people have gone missing, presumed dead, and nobody really knows what happened to them. Just reading the news online this morning and I noticed a report from Australia's ABC News. The location of some wreckage is known but it appears that the flight data recorders are in 3000 to 7000 kilometres deep water. I think that that's a little deeper than the Mariana Trench which is considered to be the deepest point of the Earth's surface below sea level.

Can't wait to see this one on Air Crash Investigation.