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Mystery of Flight MH370 -- Why isn't Black Box Data also uploaded in real-time via satellite, via internet, to data cent
05-28-2014, 02:29 PM
Post: #9
 
1. Satellite technology is good enough. The ACARS system already transmits a lot of the data that you're talking about, but not continuously. It will transfer data during takeoff and climb, then once every 30-40 minutes, at the end of the flight (on the ground not by satellite), or if there is a malfunction. It is not cost effective to broadcast more than that. It is also used as an alternate form of communication between the crew and the airline. It includes position information. There are different subscriptions that an airline can get, depending on what and how much data they want during the course of a flight. This system was disconnected for unknown reasons in MH370. (either it malfunctioned or was shut down due to malfunction or some other reason). The only signal they had was a signal hourly "ping" between the satellite and the aircraft confirming that there was still a connection between them.
2. I don't know how much it would add to the cost of a ticket, but it would increase it significantly if all the data you're talking about were continuously streamed.

CVR information is not streamed or saved (except the last :30-2:00). Part of the issue with this is similar to the problem with cameras in the cockpit. Being continuously recorded from the CVR in case of an accident is one thing, but having it immediately available to your employer or others is another. Being monitored by your employer in that way would effect job performance and decision making. There have been accidents where crew members were concerned about an issue, but didn't feel comfortable bringing it up to the captain. Crew Training in human factors helped to address this problem, but now you'd be adding in your employer. You could also be stepping towards the possibility of people using the information in lessor incidents, or in an uneventful flight. With so many people possibly listening in and judging your performance it would be intimidating.

There was an accident many years ago where an aircraft was waiting for take off while several thunderstorms were in the area. Several other airlines went ahead, despite the storms. The first officer was not comfortable but didn't know how to express this concern to the captain. In those days, you just didn't question the captain. There is heavy military influence in the history of aviation, so it was like a private working with a general. Questioning the Captain's judgment or actions was a big "no no." The first officer would point out the lightening in several storms numerous times, but didn't make any direct statements. After this accident and others. Crew training and communication changed to help combat this problem, although it's not completely eliminated. If you live stream data for other people to listen to, you'd be complicating the matter even more.

I would expect that the length of the CVR may change. It's only required to be for 30 minutes, though most are longer. The technology to extend it is available and affordable.
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[] - 154 - 05-28-2014, 01:31 PM
[] - xpatinasia - 05-28-2014, 01:34 PM
[] - ? - 05-28-2014, 01:49 PM
[] - Tedward - 05-28-2014, 01:53 PM
[] - QuiteNewHere - 05-28-2014, 01:56 PM
[] - Neil - 05-28-2014, 02:09 PM
[] - Valentino - 05-28-2014, 02:24 PM
[] - Piper - 05-28-2014 02:29 PM
[] - Mohamed Al Hassaan - 05-28-2014, 02:31 PM

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