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Old Mar 17, 2014, 3:08 pm
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MORE about the MH370 Discussion and Speculation Thread

In order to a) keep the original thread focused on confirmed news and known facts, and b) allow folks a place to discuss their ideas about what might have happened, the MH370 moderators and Community Director have decided to open this thread.

Here are the expectations:

1. The normal FT TOS apply. (Including not discussing moderation actions on-thread). And please be particularly attentive to "discussing the idea and not the poster" when you have a disagreement. Civility and mutual respect are still expected and are what we owe each other as a community.

2. You are expected respect our diversity , and therefore refrain from posting inflammatory comments about race, religion, culture, politics, ethnicity, orientation, etc." Do not cite, copy, or report on such.

3. Please do continue to be attentive to the sensibilities of the families of those on the flight. Think about if you were them what you would and would not want to see posted. Speculation about what happened is permissible; please, though, do not indulge in inflammatory or overly-lurid descriptions that could well be hurtful.

4. Overly / extravagantly exaggerative posts such as conspiracy theories, posts beyond the realm of science and known facts, etc. as well as posts with information that has been posted several times previously, information that has been posted in the News thread wiki or FAQ, may be deleted.
E.g. the aircraft was vaporized.

In terms of housekeeping, posts may get moved from the "news" thread if and as needed, and posts that do not conform to these simple expectations, above, will be deleted.

Also note: this wiki is locked; changes can only be made by moderators.

Thank you.

Your MH370 Moderation Team
aBroadAbroad; cblaisd; JDiver; l'etoile; NewbieRunner; oliver2002; Prospero
and Community Director
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MH370 Discussion and Speculation Thread

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Old Apr 5, 2014, 6:07 am
  #1546  
 
Join Date: Mar 2014
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Originally Posted by mike1968
Too many things don't add up...from failure to scramble a search plane to insistence of spending a week searching South China Sea knowing where the plane exited Malaysian airspace.
Only in hindsight do these things seem anomalous. Don't forget that there were several reported sightings of the aircraft in flight, of flames in the air, of an aircraft in a steep dive, of floating wreckage - and also at first the primary radar hits were not known to be MH370 so it was not "known" that it exited Malaysian airspace. I think that there were PR failings but I agree with the Malaysian team's own statement that they did all (most of) the right things otherwise.

<redacted>

Last edited by aBroadAbroad; Apr 5, 2014 at 1:03 pm Reason: Characterization without supporting citation
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Old Apr 5, 2014, 6:11 am
  #1547  
 
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Originally Posted by Wickerman
Just reported in the media that the device to detect the 'ping' is being towed at a depth of 3000ft.
Isn't the average depth about 13,000ft?
Sound travels quite well in water. 10,000ft = ~2 miles. I thought the detection range was 'upto' 4-5 miles, so while I see a distance challenge hopefully they can cover a wider area by towing at lower depth?
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Old Apr 5, 2014, 6:19 am
  #1548  
 
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Originally Posted by polarbreeze
........Good old CNN: "37.5 kilohertz per second" - but we can't be sure because there are "many things in the Indian ocean that give out pings at that frequency".
I was led to believe the frequency was chosen because it was unique.
It must be unmistakable as to what it represents, otherwise there is no point.

It might be well to point out that the Chinese have published false alarms before.....

Last edited by cblaisd; Apr 5, 2014 at 7:01 am Reason: Removed reference to a news story where no link is cited
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Old Apr 5, 2014, 7:12 am
  #1549  
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Gentle reminder...

Originally Posted by cblaisd


If you are going to cite, characterize, or quote what another news source is saying, include a link to the story.

Please also take pains to make it clear when you are quoting and when you are not.

Thank you.

cblaisd
On behalf of the moderation team
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Old Apr 5, 2014, 7:40 am
  #1550  
 
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Originally Posted by Wickerman
I was led to believe the frequency was chosen because it was unique.
It must be unmistakable as to what it represents, otherwise there is no point.

It might be well to point out that the Chinese have published false alarms before.....
It is unique. Various news sources (such as this one)are reporting a quote "However, experts have cautioned that the same signal could come from “a variety of things”." Um, no it couldn't. If (and I stress if) it is indeed a verified underwater signal at 37.5khz it's an FDR or CVR pinger.

The location sure looks about right:



Let us all just hope and pray it is shall we?
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Old Apr 5, 2014, 9:06 am
  #1551  
 
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BBC said the ping wasn't recorded by the search ship. The ping emits once hourly, right? So we will know very soon if there is a second ping.
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Old Apr 5, 2014, 9:53 am
  #1552  
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Originally Posted by Wickerman
If true, that is not a secure lock. Any terrorist could force a Flight Attendant to give him the code. To be secure the door should have a manual lock along the lines of a dead-bolt.
Correct.

The co-pilot of the Ethipioan Airlines plane managed to hijack the plane and to keep the other pilot out of the cockpit. Because it is a secure lock.

Occam's razor. One pilot took control of mh370 once the other used the lav.
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Old Apr 5, 2014, 10:34 am
  #1553  
 
Join Date: Mar 2014
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Originally Posted by adamak
BBC said the ping wasn't recorded by the search ship. The ping emits once hourly, right? So we will know very soon if there is a second ping.
Ping from FDR or CVR is emitted once every second. (Are you thinking about ACARS?)
The Chinese stated (as reported via CNN) that the signal lasted for 90 seconds.

Note to Mod. - not sure how to provide a link for that

http://www.cnn.com/2014/04/05/world/...html?hpt=hp_t1

Last edited by cblaisd; Apr 5, 2014 at 11:26 am
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Old Apr 5, 2014, 11:35 am
  #1554  
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Originally Posted by Wickerman
Ping from FDR or CVR is emitted once every second. (Are you thinking about ACARS?)
The Chinese stated (as reported via CNN) that the signal lasted for 90 seconds.

Note to Mod. - not sure how to provide a link for that
The state-run Xinhua news agency which reported that a Chinese ship picked up a pulse signal has not mentioned the length of time that the signal lasted.

Here is a link to a recording of CCTV's China 24 News in English:
NewbieRunner is offline  
Old Apr 5, 2014, 12:10 pm
  #1555  
 
Join Date: Mar 2014
Posts: 80
Originally Posted by NewbieRunner
The state-run Xinhua news agency which reported that a Chinese ship picked up a pulse signal has not mentioned the length of time that the signal lasted.

Here is a link to a recording of CCTV's China 24 News in English:
The newscast that you linked to does indeed mention the length of time the signal lasted. She said it lasted 15 minutes on Friday and then again 90 seconds on Saturday.

If they really did hear 37.5kHz bursts at one-second intervals on two separate occasions (one lasting 90 sec, the other 15 mins) there is no doubt that this is the black box(es) from MH370 since there is no other possible source. But the uncertainty lies in the question as to whether they really did detect those 37.5kHz bursts at one-second intervals. It needs corroboration.

Last edited by polarbreeze; Apr 5, 2014 at 12:20 pm
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Old Apr 5, 2014, 12:14 pm
  #1556  
 
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Are the recorder boxes' pings just that or is there any data encoded in the signal - say a simple ID for example ?
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Old Apr 5, 2014, 12:19 pm
  #1557  
 
Join Date: Mar 2014
Posts: 44
Originally Posted by polarbreeze
The newscast that you linked to does indeed mention the length of time the signal lasted. She said it lasted 15 minutes on Friday and then again 90 seconds on Saturday.
Strange that they previously detected this signal on Friday yet apparently had not informed JACC in Australia, or we might have heard it mentioned in the latest news briefing Saturday morning (local time).
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Old Apr 5, 2014, 12:45 pm
  #1558  
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Originally Posted by polarbreeze
If they really did hear 37.5kHz bursts at one-second intervals on two separate occasions (one lasting 90 sec, the other 15 mins) there is no doubt that this is the black box(es) from MH370 since there is no other possible source. But the uncertainty lies in the question as to whether they really did detect those 37.5kHz bursts at one-second intervals. It needs corroboration.
How can you say 'there is no doubt' when the reporter clearly said that this frequency is not exclusive to the plane's black box, this kind of signal could be from some other equipment, and they cannot confirm that the signals are from the missing plane?
NewbieRunner is offline  
Old Apr 5, 2014, 1:12 pm
  #1559  
 
Join Date: Mar 2014
Posts: 21
Why did the Chinese not announce yesterday they heard a beacon for 5 minutes?
Why is it being reported today's new 90 seconds wasn't recorded when they said the next step is sending it to Boeing for verification of a match?

Last edited by indiekiduk; Apr 5, 2014 at 1:19 pm
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Old Apr 5, 2014, 1:43 pm
  #1560  
 
Join Date: Mar 2014
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Originally Posted by indiekiduk
Why did the Chinese not announce yesterday they heard a beacon for 5 minutes?
Why is it being reported today's new 90 seconds wasn't recorded when they said the next step is sending it to Boeing for verification of a match?
We are dealing with China.
Although China reported that they will join in the search, I am not aware that they signed up for mutual cooperation with anyone.

<redacted>

Last edited by aBroadAbroad; Apr 5, 2014 at 2:18 pm Reason: Removed unhelpful bit
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