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Plane Missing - 239 people on board.
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[quote][i]Originally posted by ed[/i] [quote][i]Originally posted by Rob_Quads[/i] [quote][i]Originally posted by ed[/i] I read an article yesterday (can't remember the site) saying that even transmitting the 'black box' data in real time via satellites would cost billions a year for each airline. They said that as this sort of event is so infrequent that the money is better spent elsewhere. [/quote] This is where they need to be clever. You don't need to transmit the blackbox - Thats got way more than you need. You don't need to recreate the whole incident in real time. you just need the accurate location in realtime which them means its much much easier to get hold of the blackbox which you can do the post analysis on. Transmitting that sort of data would still be a few 100's of millions but when you think loosing that plane will probably cost them 400+ million in 1 incident. [/quote] Generally you do have an accurate position of where the aircraft is - they'd be tracking it through the airspace using a Mode S or Mode C transponder, if those have been turned off then you should be able to see it using primary radar. Even if the aircraft has fallen to bits then you should be able to see the debris on primary radar. If the aircraft hasn't totally disintegrated into dust then you'd expect the Emergency Location Transmitters (ELT) to signify the location of the wreckage. There are apparently two of these, one for land and one for sea on a 777. Failing that, the 'black box' transmits it's location using ultrasonic/microwaves (forget which) for about 2 years after an incident - these signals should be receivable from around 100 miles away. What's weird here is that the aircraft has apparently disappeared into thin air with no debris and no trace :boggle: [/quote]
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