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-   -   Malaysian Airlines MH370 contact lost (https://www.pprune.org/rumours-news/535538-malaysian-airlines-mh370-contact-lost.html)

Pace 27th Mar 2014 02:25

There was an interesting discussion with Cousteau the son of the famous Jaques Cousteau and an expert in the suspect area.
Firstly millions of tons of waste are tipped into the Oceans.
second point he made is that the wreckage could be in 25000 feet of water.
The bottom is not flat but made up of mountains and valleys.
The currents are some of the strongest in the world not just horizontal but vertical currents.
After this length of time any floating parts could be hundreds of miles from the impact point!

It is exceptionally unlikely that there will ever be a definitive answer to this mystery and that this tragic event will be discussed for years with theories that it and its PAX are being held on some remote reef to a disturbed member of the crew doing something crazy.Probably even that some Galactic visitor took the aircraft away and its PAX for scientific study :ugh:

With the huge insurance claims come vested interest??? probably that this was some sort of hijack of a serviceable aircraft to the aircraft faulty to the operator at fault.
So keep guessing guys as we will never get an answer

Contact Approach 27th Mar 2014 02:33

Southern Ocean is littered with rubbish
 
It is well documented that the southern Indian Ocean is littered with waste, so it is more than likely these satellite images are just that.

Is perhaps likely that this is a reoccurrence of something similar to the Adam air crash in Indonesia? Flight crew distracted by inflight-non-serious failure of a particular system and they simply forgot to fly the plane? In the case of the Adam Air crash the aircraft wasn't found for sometime!

oldoberon 27th Mar 2014 02:40

CNBC news, sources say some files have been recovered from the pilot hard drive but nothing suspicious was found.

A sea expert? stated the french debris could even be from the Bandar Aceh Tsunami

Contact Approach 27th Mar 2014 02:47

MH370 similar to Adam Air 782?
 

Adam Air Flight 782
On February 11, 2006, Flight 782, registration number PK-KKE (c/n 23773), lost navigational and communications systems twenty minutes into a flight from Jakarta to Makassar, Sulawesi. The plane was subsequently flown into a radar "black spot" and was lost for several hours, eventually making an emergency landing at Tambolaka Airport, Sumba (on a different island 481 km away from their intended destination, and southeast from their origin, instead of northeast).
Adam Air - Wikipedia, the free encyclopedia

CaptainEmad 27th Mar 2014 02:52

Thanks for your gloomy predictions Pace,


second point he made is that the wreckage could be in 25000 feet of water.
Probably not, that is the approximate depth of the Java trench, not the relatively flat plain beneath the search area (2500m-3500m deep) of the Indo-Australian plate.

Wiki image of the Indian Ocean sea floor...

http://upload.wikimedia.org/wikipedi...an_surface.jpg


So keep guessing guys as we will never get an answer
OK, we will keep guessing. :ok:

onetrack 27th Mar 2014 03:11

UPDATE - The ADV Ocean Shield is on its way to Fremantle where it will be fitted with the U.S. Navys Towed Pinger Locator 25 System, which has already arrived in Perth.
It appears it will take a couple of days to fit up the Ocean Shield with the towed Pinger Locator.
Then there will be another couple of days travel to the search area, as the Ocean Shield only does 16kts maximum.
On its way West from Sydney, it was only making 13.2kts headway through the Gt Australian Bight, running against fairly constant prevailing Westerly winds.
It really is a race against time, before the FDR battery fails. :(

ADV Ocean Shield - Wikipedia, the free encyclopedia

If the FDR is found, the acoustic signal of the FDR pinger is transmitted up the Pinger Locator cable and can be output to either an oscilloscope or a signal processing computer (I didn't know oscilloscopes were still in use, in the U.S. Navy!).
The operator monitors the greatest signal strength and records the navigation coordinates, and then the ship repeats the procedure on multiple track lines until the final position is triangulated.

The Pinger Locator has a capability of 20,000' (over 6,000M). The sea bed in the region of the search zone is up to 4,500M deep.

What would be of concern, is the width of coverage of the Pinger Locators. If the width of coverage is only around the maximum operational depth quoted, that means a lot of track lines to be done!

Those "bright, reflective, possible debris objects" in the sat pics could also be remnant ice floes, too!

Another cold front with increased rain, cloud and wind is going to pass through the search zone this (Thurs 27th) afternoon, and will hamper search efforts until the weather clears again, possibly Friday afternoon.

hamster3null 27th Mar 2014 04:06


Originally Posted by auraflyer (Post 8401469)
Interesting, hamster3null. One question - how does it look at lower or higher speeds? Do you get the same profile but just at a different heading? Or does the plot actually differ?

(As I understand it, and I may be wrong or missing something, they don't know the actual speed of the aircraft, or even that that speed was constant over the 7 hrs. Rather, they only know the difference in relative velocities at points in time. As a result, while the velocity and position for the satellite are known, one has to posit assumed heading/assumed speed pairs for the aircraft, each of which give the same difference in relative velocity, but correspond to a different track in real life.)

The plot differs somewhat depending on the speed. An agreement is good at 450 kts and heading 185, it could have gone a bit faster, but on a slightly more westerly heading, or, conversely, slower but further east. In either case the difference in course can't be large. I only get semi-decent fits for headings between ~182 and 188.

CaptainEmad 27th Mar 2014 04:07

Jbr76:

If the aircraft crashed into sea, why hasn't there been an activation of the ELT?
  • The ELT antenna was broken off in an impact
  • The aircraft went in inverted
  • The ELT was not working
  • The touchdown was not violent enough to activate it
  • The ELT was destroyed by impact forces
  • The ELT is like all other ELTs and does not work underwater

This list could be only 1% of the many reasons you could use to explain why there was no signal detected.

Hedge36 27th Mar 2014 04:14


Originally Posted by jbr76
Correct me if I am wrong but a u/s ELT is not MEL-able. There must be a serviceable ELT for the aircraft.

The ELTs are designed to survive a pretty harsh impact and have g-sensors which activate upon imact.

ELT's are very much water resistant.

Some of your responses are flawed.

You appear to put a lot of faith in your equipment.

onetrack 27th Mar 2014 04:20

ZAZ - "Oscilloscope" was precisely the word, the U.S. Navy officer used in the interview.

Towhee 27th Mar 2014 04:24

attesting to the difficulty of obtaining any evidence:
 
MH370 search zone: rough seas and strong currents pose string of problems | World news | theguardian.com

Coagie 27th Mar 2014 04:37

"ZAZ - "Oscilloscope" was precisely the word, the U.S. Navy officer used in the interview."

Nothing wrong with using an oscilloscope to look for a voltage (amplitude) at a particular frequency. If they were looking at a range of frequencies, they'd use a spectrum analyzer. They'd need to look at the 37.5khz, since it's beyond human hearing range, unless they down convert it to human hearing range.

Tokyo Geoff 27th Mar 2014 04:53

All SAR activity cancelled for the rest of the day due to the weather. :(

500N 27th Mar 2014 05:02

Here is a photo you won't see very often (not everyone is in the picture)
but Aust, NZ, US, Chinese, South Korean and Japanese military personnel all
in the same room and working together.

The guy speaking is Australia's defense minister, the Chinese are in Blueish Camo
and the guy in the suit.

http://i61.tinypic.com/df9kk5.jpg

Frequent SLF 27th Mar 2014 05:06

All in the same room
 
500N - thank you for posting that. A nice image and a touch of sanity among the madness and posturing. That is what international aviation ir actually about.

Machinbird 27th Mar 2014 06:01

A method to find the actual crash location?
 
During the search for AF447, France's BEA commissioned a working group (The Drift Group) to evaluate all the methods of backtracking wreckage floating on the surface.

This did not produce sufficient accuracy for a viable search and actually seems to have delayed the location of the wreckage.

The Drift Group report can be found here:
http://www.bea.aero/en/enquetes/flig...oup.report.pdf

There was one useful jewel in the report, but it didn't fit the group think concept and so was ignored. Appendix 7 of the report contained an anomalous "pollution spot" detected by the Cosmo-skymed synthetic aperture radar satellite. The shape of the spot was unusual and it was very close to the LKP.
http://i37.tinypic.com/1h7ytg.jpg


MH370 was likely flown to fuel exhaustion however there would still be some fuel retained in the tanks which would have spread out on the surface and changed its radar reflectivity slightly. Jet fuel would evaporate fairly quickly with the rate likely dependent on temperature and surface turbulence and wind velocity. In the case of AF447, the slick was predicted to evaporate within 30 hours. MH370 would undoubtedly be a shorter period.

There is some chance of a detectable slick. The Cosmo Skymed is a small constellation of satellites designed to revisit areas relatively quickly, and there may be a fair chance of detection of a fuel slick from the crash of MH370.

Here is a link to the Cosmo Skymed information and tasking site:
https://directory.eoportal.org/web/e...s/cosmo-skymed


To improve the odds of detection it would really be useful to narrow down the area of interest by finding actual floating wreckage and backtracking it using whatever means possible.

The collected data from the Cosmo skymed satellites appears to be stored in bulk and is extracted as needed based on tasking requests.

mickjoebill 27th Mar 2014 06:36

Interview with commander of HMAS Success
 
ABC news live radio interview with the skipper of HMAS Success, Captain Allison Norris.

HMAS Success is a supply and support vessel of Australian navy.
1400NM SW of Perth
Despite news reports to the contrary they are continuing to search despite the poor weather.
Sometimes 30-40 crew on lookout
8-12 crew on lookout as a minimum 24/7
Has a crane that can lift debris.
Connectivity with crew and their families is limited due to being "far out"
Their task is continue to search until asked to stop by authorities.
Highly trained and professional crew who are up to the task.
Previous task was to the North of oz mainland in support of operations.

The skipper has an impressive cv with an interest in aviation.
https://www.navy.gov.au/biography/ca...allison-norris

AU-501 27th Mar 2014 06:54

G,day Earl,

I am not B773 rated. However and if any triple types can say otherwise, I do believe that the A/C has conventional PWRs assisted controls not FBW the exception being a spoiler on each wing and T/E flaps.

Not trying to be a smart arse, just like a bit of clarity.

Comments anyone without departing fm the subject of the thread

wiggy 27th Mar 2014 07:11

AU-501
 
The T7 is fully FBW, with three different modes, from full blown "normal" mode with the likes of envelope protection through the more basic "secondary" down to "direct" where you get rid of the computers and are signalling the actuators directly but still electronically from the flight deck controls. There is also a very limited manual "backup" capability to some of it's control surfaces.

Wannabe Flyer 27th Mar 2014 07:13

Is there any website that would be able to give water and weather conditions between the partial handshake (8:19) to no Handshake (9:15) am in the area under investigation on the date of the incident?

This would show the probability of a largely intact set down with a smaller initial scattering of debris field (if water were calmer) or a much larger surface break up accounting for multiple spotting of large pieces of debris as is now showing up on various Satellites.

Any attempt to keep the aircraft as intact as possible to hide it as seems the case would have taken this into account......:\

Any experts out there to advise if 2005 Tsunami Debris could still be around in that part of the world? :sad:


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