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Malaysian Airlines MH370 contact lost

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Malaysian Airlines MH370 contact lost

Old 6th Apr 2014, 00:00
  #9241 (permalink)  
 
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A black box detector deployed by the Haixun 01 picked up the signal at around 25 degrees south latitude and 101 degrees east longtitude. It is yet to be established whether it is related to the missing jet.
Does anyone know what the "...black box detector..." is? Is the Haixun 01 using a towed pinger locator?

From a ULD patent;

Experience during past recovery operations has shown the range of the current conventional ULD design to be approximately one mile.
One mile is about 1600m the depth at 25 S 101 E has been quoted as greater than 4000m so roughly 2500m of cable minimum needed. Specialist equipment surly?
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Old 6th Apr 2014, 00:06
  #9242 (permalink)  
 
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To summarise, the 37KHz pings heard near the surface (if true) indicate that wreckage is on the bottom somewhere nearby.

It is not, however, a simple job to narrow the search and determine an exact location because the signal could have bounced around in an underwater mountain range and been deflected by temperature and salinity layers.

The next part of the job, therefore, is to get listening devices as deep as possible whilst avoiding collision with the mountains. This requires specialist kit and is not easy.

This is going to take time and the batteries are nearing their end. It is therfore likely that a deep water sidescan survey will be required, the good bit is that the search area is now much smaller.

When wreckage is eventually located it will still take months rather than weeks to recover anything using UAVs
Once an area of search is established - sonobuoys and towed array will make short work of it. Probably other assets able to find it also...issuieng strong hints at where to look.

Well nothing's been found in the previous "areas of interest". If 25s 101e does prove to be the final resting place, there will be a lot of explaining to do by the likes on Inmarsat, and the Australian defense forces who's radar seemingly missed it
A naive assumption. Why would a nation claim to have / or not to have radar coverage over any given range? See my above.
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Old 6th Apr 2014, 00:17
  #9243 (permalink)  
 
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Australian foreign minister on television: "nothing confirmed, please don't speculate and please wait until Angus Houston confirms one way or the other".
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Old 6th Apr 2014, 00:23
  #9244 (permalink)  
 
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Smile

RSCU75 is currently firing-up at Perth. It will be interesting to see the outbound track, perhaps indicative of the location of the Chinese ship evidence. Out of interest a Falcon 900 owned by a company associated with the AMSA SAR aircraft has been departing out of Canarvan to the west for extended periods for a number of days on a track consistent with the newer northerly search areas. It was apparent almost a day before any announcement was made that the search area had again shifted north by a significant amount.
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Old 6th Apr 2014, 00:52
  #9245 (permalink)  
 
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RSCU75 is currently firing-up at Perth. It will be interesting to see the outbound track, perhaps indicative of the location of the Chinese ship evidence.
Rescue 75 is now airborne. It is a P-8A from VP-16, the War Eagles out of Navy Jacksonville, Florida.

Initial track seems to be 284 degrees.
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Old 6th Apr 2014, 00:56
  #9246 (permalink)  
 
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Originally Posted by Airbubba View Post
Rescue 75 is now airborne. It is a P-8A from VP-16, the War Eagles out of Navy Jacksonville, Florida.

Initial track seems to be 284 degrees.

Last edited by p.j.m; 6th Apr 2014 at 01:35.
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Old 6th Apr 2014, 01:28
  #9247 (permalink)  
 
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I did read in the Chinese press that the ship was directed there by Australian authorities.
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Old 6th Apr 2014, 01:40
  #9248 (permalink)  
 
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Rescue 75 is cruising to the search area at FL325, I would assume this indicates MARSA.

From this morning's JACC media release:

The Australian Maritime Safety Authority (AMSA) has three separate search areas planned for today about 2,000 kilometres north west of Perth, which total approximately 216,000 square kilometres.

Weather in the search area is expected to be good with a cloud base of 2,500 feet and visibility greater than 10 kilometres.

Reports overnight that the Chinese ship, Haixun 01, has detected electronic pulse signals in the Indian Ocean related to MH370 cannot be verified at this point in time.
Search and recovery continues for Malaysian flight MH370
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Old 6th Apr 2014, 01:59
  #9249 (permalink)  
 
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In addition, the Foreign Minister said that the report had come from a media reporter on the Chinese ship. As has been said its best to wait for confirmation by the search authorities.
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Old 6th Apr 2014, 02:26
  #9250 (permalink)  
 
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Tend to agree with the” firsts” for China in relation to all the findings. As already pointed out China appears to be doing its own thing. Why was the ship outside the search area and if it was transiting would it not be quicker to do so without a towed array or can it detect without a towed array.

Conspiracy well yes but not really. Would you wish to reveal just how good your radar etc was. I guess coming from a culture that when you are told, by Government, something you just believe it your mind set is that this is how other cultures operate. So it possibly would be expected that if a ship was operating outside the search area and it was just there cause it just was would not raise questions in this culture.
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Old 6th Apr 2014, 02:31
  #9251 (permalink)  
 
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acting autonomously?

. The decision to release the news via Chinese media rather than the Australian agency set up to co-ordinate the operation is likely to cause friction. CNN said an Australian source connected to the search said the centre had learned of the alert several hours earlier but had not been able to communicate directly with the Haixun. While other search crews report possible evidence connected to the flight directly to the joint research centre, the Chinese teams report it to Beijing first.
MH370: Chinese patrol ship detects ping near suspected location of plane | World news | theguardian.com
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Old 6th Apr 2014, 02:45
  #9252 (permalink)  
 
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Chinese patrol ship Hai Xun 01 searching for MH370

The Chinese patrol ship Hai Xun 01 does not want to have its location tracked since 23rd March

https://www.marinetraffic.com/en/ais...mmsi:412379930
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Old 6th Apr 2014, 03:14
  #9253 (permalink)  
 
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China detection is fishy, so to speak

Agree but given the size of a search area it is unlikely to have been covered, particularly by towed array which also leads into my other query “Why was the ship outside the search area and if it was transiting would it not be quicker to do so without a towed array or can it detect without a towed array.”
Not only that, the odds of it stumbling upon the beacon are very low. With detection ranges of only a few kilometers, only from a deep towed listener, it takes a very long time to cover a wide area.

I suppose they might have found debris using a side looking mapping sonar, but again, pretty unlikely.

Either the Chinese are extremely lucky, have undisclosed but very good intelligence as to the sunken wreckage location (not just surface wreckage), or are wrong about the report.

BTW... after 30 days, the beacon output is supposed to be down only 3 dB (half power).

Last edited by Mesoman; 6th Apr 2014 at 03:59.
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Old 6th Apr 2014, 03:19
  #9254 (permalink)  
 
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Can people not read news stories!!.....
Retired Air Chief Marshal Angus Houston, who is leading the international search effort, said the pulse signals are characteristic of an aircraft black box.
"I have been advised that a series of sounds have been detected by a Chinese ship in the search area," he said in a statement this morning."The characteristics reported are consistent with the aircraft black box.
"A number of white objects were also sighted on the surface about 90 kilometres from the detection area."
"However, there is no confirmation at this stage that the signals and the objects are related to the missing aircraft."


Why are people still speculating that the Chinese were out there doing their own thing and conducting their own search in another area?!!!!
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Old 6th Apr 2014, 03:22
  #9255 (permalink)  
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Not only that, the odds of it stumbling upon the beacon are very low. With detection ranges of only a few kilometers, only from a deep towed listener, it takes a very long time to cover a wide area.
According to ABC news 24 the discovery was made from 'rubber ducky' (their words) with a hydrophone!
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Old 6th Apr 2014, 03:30
  #9256 (permalink)  
 
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Originally Posted by Mesoman View Post
Not only that, the odds of it stumbling upon the beacon are very low. With detection ranges of only a few kilometers, only from a deep towed listener, it takes a very long time to cover a wide area.
And if they were underway, right at the edge of the reception area, that would explain the signal disappearing after 15 minutes, or 90 seconds.

Interestingly the AMSA "planned" search area for today (6/4) hasn't moved towards the 101e 25s location much if at all.

Not sure how far in advance they plan these areas.

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Old 6th Apr 2014, 03:53
  #9257 (permalink)  
 
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Howard Hughes
According to ABC news 24 the discovery was made from 'rubber ducky' (their words) with a hydrophone!
I don't think that's correct at all... I've been watching ABC News 24 since early this morning here in Sydney, and at no time have I heard the term "rubber ducky" used at all. In the below article on their website it clearly states;

PHOTO: Chinese patrol ship Haixun 01 scours the Indian Ocean in the search for missing Malaysia Airlines flight MH370. (Reuters: China News Service)

MAP: Australia

Malaysia Airlines MH370: Tony Abbott urges caution after Chinese ship detects pulse in southern Indian Ocean - ABC News (Australian Broadcasting Corporation)

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Old 6th Apr 2014, 04:16
  #9258 (permalink)  
 
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Obects spotted in search area....

"White floating objects were spotted Saturday by a Chinese military aircraft in remote southern Indian Ocean west of Perth, Chinese military sources said.
The crew of a Chinese Ilyushin IL-76 plane spotted numerous white floating objects in about 20 minutes starting from 11:05 local time and took pictures of them."


Pic here: Chinese aircraft spots new floating objects in search of MH370 - Headlines, features, photo and videos from ecns.cn|china|news|chinanews|ecns|cns
(taken 5 April 2014)
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Old 6th Apr 2014, 04:42
  #9259 (permalink)  
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ABC News 24 - ABC News (Australian Broadcasting Corporation)
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Old 6th Apr 2014, 04:43
  #9260 (permalink)  
 
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White objects STILL cannot be confirmed as MH370 as per my PR last night....

More coming..

Abc.net.au

Speaking well. Finally a non idiot speaking sense.

I suspect (and so far it is) just a way of shutting down idiot speculation.

'We must be aware of the effect on relatives' etc etc

' rest assured every single possible lead will be fully explored and updates will be provided'

More of same. Taking questions...

Interestingly before the PC, it was being discussed why the Chinese were well outside the search area and had picked up signals that the west didn't think they had the capabilities to do - inference, what have they got that they haven't been sharing....

Looks like they seem very interested in what the Chinese found, but do not want anyone jumping at shadows...
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