CNN CNN Newsroom April 12, 2014 19:03:00
As i just mentioned, in fact, it's been four days now since they recorded and detected any pings from the emergency beacons on those black box flight recorders. so i think there's a sense in which, you know, hope is diminishi diminishi diminishing somewhat, fredricka. >> what about the planes up in the air? how are they assists in the search? >> reporter: it's a kind of separate search, although there are some planes involved in the acoustic search as well dropping sonar buoys into the water to try to detect pings as well. the majority of the aircraft involved in the multi-national search are ...
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