CNN Erin Burnett OutFront March 27, 2014 03:18:00
Off in air france flight 447, so how complex a task is without pingers to locate these things? is it just searching a grid? >> as long as you have a place to start, running back and forth plowing the field and hoping you don't go over a spot, think the aircraft is not there and go on to the next spot. you don't want to miss it if it's sitting right below you. >> les, i know we talked to david about this, after the air france crash, there were new safety guidelines about the length of time that a pinger would be able to go for, for 90 days. but that's only in new aircraft from 2015 on. the old ...
Source: archive.org