CNN CNN Newsroom March 31, 2014 14:05:00
Hopefully, well find at least something to go on. >> hopefully so. what if they dont detect any ping? then what? >> it is entirely possible that they wont. there have been issues with how the batteries are stored and that would affect battery life. there is an issue if they have fallen very deep into the ocean. if it is on one side of an underwater mountainous, it might not pick it up on the other side. there have been some accidents where the pinger didnt start at all anyway. it is not a given ...
Source: archive.org