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  #41  
Old 10.03.2014, 17:01
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Re: Malaysian Airlines flight missing

They shoud search in the deep ocean
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  #42  
Old 10.03.2014, 17:09
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Re: Malaysian Airlines flight missing

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I think that there are multiple communications systems that would need to be shut off. But I am sure that anyone determined enough to hijack a plane could figure out how to do this.

I think the more difficult part would have been to cut off all communications with mobile phones/devices belonging to passengers and crew. Even if the passengers were "disposed of" or incapacitated, their devices would still connect to networks, especially if the plane were flying under radar or had landed somewhere.

So still quite a mystery.
There was a report that a family member tried to call the mobile number of a passenger in the plane. He did not get something like "out of service" or "unavailable" which is supposed for phones turned off or just broken, but he actually got through and had the normal beep (like someone did not answer the phone), and after some seconds the call was hung up automatically.

http://www.mirror.co.uk/news/world-n...moment-3222919

Officials say that this can be quite normal (e.g. automatic call redirection, etc...).
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  #43  
Old 10.03.2014, 17:11
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Re: Malaysian Airlines flight missing

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That was my thought too but how easy is it to do this?
Turning the transponder off is trivial if you have access to the cockpit. Depending on the implementation you can even turn it off by accident - witness the midair between a business jet and a 737 in Brazil some years ago caused by exactly that.
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  #44  
Old 10.03.2014, 17:15
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Re: Malaysian Airlines flight missing

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That was my thought too but how easy is it to do this?
Dunno, pull a breaker, flick a switch. I think it's fairly easy to turn pretty much everything off from the cockpit by design.
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  #45  
Old 10.03.2014, 17:48
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Re: Malaysian Airlines flight missing

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Not necessarily, if that would be the case, they could have easily used a mobile phone jammer.
Or the good old-fashioned "Any of you f-in' pricks move, and I'll execute every motherf-ing last one of you!"
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  #46  
Old 10.03.2014, 17:59
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Re: Malaysian Airlines flight missing

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Or the good old-fashioned "Any of you f-in' pricks move, and I'll execute every motherf-ing last one of you!"
Not sure, I imagine this being only feasible if there are plenty and highly trained terrorists on board.
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  #47  
Old 10.03.2014, 18:01
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Re: Malaysian Airlines flight missing

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They shoud search in the deep ocean
I think that we should pass this gem of a piece of investigative theory onto both the Malaysian and Vietnamese authorities who clearly haven't yet managed to establish possible crash site locations.

And, just for the record, shoud is normally written as "should". So when you read the Cockpit Voice Recorder transcript you'll get a more involved read.
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  #48  
Old 10.03.2014, 18:16
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Re: Malaysian Airlines flight missing

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So when you read the Cockpit Voice Recorder transcript you'll get a more involved read.
That's a point. We might never know for sure what happened. If the transponder was switched off, then the CVR may well have been pulled/erased.
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  #49  
Old 10.03.2014, 18:22
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Re: Malaysian Airlines flight missing

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Not sure, I imagine this being only feasible if there are plenty and highly trained terrorists on board.
You might be right. I've only ever seen used in a diner.
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  #50  
Old 10.03.2014, 18:47
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Re: Malaysian Airlines flight missing

Could it be that the authorities haven't seached in the right place yet?

If it had turned, as some reports suggest, it could be anywhere in a radius of over 100 miles of its last known position. The Chinese appear to think that not enough is being done to locate it

http://www.bbc.co.uk/news/world-asia-26513506
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  #51  
Old 10.03.2014, 19:21
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Re: Malaysian Airlines flight missing

Pprune is a train wreck of a site populated by armchair pilots and Want to be.. along with real pilots so lots of false info.

Cvr does have an erase button but its active only with a logic such as engines off, on ground, park brake applied etc.

Cvr is located at rear where there isnt any pax access.

They have a water activated beacon thats powered for 30 days.
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Old 10.03.2014, 19:55
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Re: Malaysian Airlines flight missing

My totally uninformed guess is that it involved one of the pilots. There's a precedent for this, but I can't remember the details.

The pilot can use the radar deadzone to drop under the radar and smash the plane somewhere off-route.
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  #53  
Old 10.03.2014, 21:02
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Re: Malaysian Airlines flight missing

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. The Chinese appear to think that not enough is being done to locate it

http://www.bbc.co.uk/news/world-asia-26513506

Well, I am not sure what else they could do. This is already like one of the biggest search operation ever involving many ships, aircraft, countries. I watched the latest press conference - some of the answers were bizzare, but I guess they are getting tired with all the same questions the press is asking and they simply have no new answer to give. There is just so much speculation and their determination not to fuel rumours make them sound like they are hiding something.

And the fake passport sounds like a red herring. Why buy tickets all the way to 2 cities in Europe via Amsterdam when a ticket to Beijing (and an onward connection) is enough to get you on the plane?
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  #54  
Old 10.03.2014, 21:50
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Re: Malaysian Airlines flight missing

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My totally uninformed guess is that it involved one of the pilots. There's a precedent for this, but I can't remember the details.

The pilot can use the radar deadzone to drop under the radar and smash the plane somewhere off-route.
You refer to the EgyptAir JFK-CAI crash of early 2001 ?
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  #55  
Old 10.03.2014, 21:56
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Re: Malaysian Airlines flight missing

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Pprune is a train wreck of a site populated by armchair pilots and Want to be.. along with real pilots so lots of false info.

Cvr does have an erase button but its active only with a logic such as engines off, on ground, park brake applied etc.

Cvr is located at rear where there isnt any pax access.

They have a water activated beacon thats powered for 30 days.
It seems that the Cvr will only emit signal after touching water. Is this true or not?

If yes. Given that no searching ship or helicopter has ever received any signal from it, and that the water depth there is only 30-70 meters, is it possible that it is not in water at all? (E.g. plane crashed or hijacked to the land)?

Last edited by happyrobbie; 10.03.2014 at 22:07.
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  #56  
Old 10.03.2014, 22:32
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Re: Malaysian Airlines flight missing

Yes it is water activated but remember its a sonar signal and quite weak so unless a submarine hunter aircraft is in the approximate area detecting it from hundreds of miles away isnt going to work. Submarines, underwater search vessels etc with equipment will also detect it if In the area.

Also if it is still in the fuselage the fuselage will weaken the signal.

Remember the beacon and battery pack is only 10cm long and 2.5cm wide total size.
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  #57  
Old 10.03.2014, 22:33
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Re: Malaysian Airlines flight missing

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My totally uninformed guess is that it involved one of the pilots. There's a precedent for this, but I can't remember the details.

The pilot can use the radar deadzone to drop under the radar and smash the plane somewhere off-route.
Air egypt I think. Pilot suicide
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  #58  
Old 11.03.2014, 01:06
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Re: Malaysian Airlines flight missing

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I think that we should pass this gem of a piece of investigative theory onto both the Malaysian and Vietnamese authorities who clearly haven't yet managed to establish possible crash site locations.

And, just for the record, shoud is normally written as "should". So when you read the Cockpit Voice Recorder transcript you'll get a more involved read.
Aha so do you think they SHOUDN'T ? That's really strange from you
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  #59  
Old 11.03.2014, 02:23
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Re: Malaysian Airlines flight missing

Simpa, the gulf of thailand is around 80-100m deep, it is not classed as deep and is easily within reach of hobby technical divers.
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  #60  
Old 11.03.2014, 07:22
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Re: Malaysian Airlines flight missing

The plane apparently went down over the South China Sea at night didnt' it? Well presumably all the passengers and crew are floating about somewhere in their life jackets; blowing their whistles and flashing their lights to attract attention.
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