Malaysia Airlines loses contact with jet carrying 239 people

[LibCampFireClub 635]

They are unhappy about the fact that ####### happens and sometimes, when flying, people die?

They got that bumper sticker and comprehend it. Most everyone agrees that this was a criminal act.

[LibCampFireClub 635]

18.28 The families gathered in Beijing have delivered a scathing denunciation of Malaysia Airlines and the Malaysian government, branding them "the real executioners" of the MH370 passengers:

"At 10pm on March 25, the Malaysian prime minister sent a statement to the families of MH370 passengers without any direct evidence that MH370 crashed in the south Indian ocean and no people survived.

"From March 8 when they announced that MH370 lost contact to today, 18 days have passed during which the Malaysian government and military constantly tried to delay, deceive the passengers' families and cheat the whole world.

"This shameless behaviour not only fooled and hurt the families of the 154 passengers but also misguided and delayed rescue actions, wasting a large quantity of human resources and materials and lost valuable time for the rescue effort.

"If the 154 passengers did lose their lives, Malaysia Airlines, the Malaysian government and military are the real executioners who killed them. We the families of those on board submit our strongest protest against them.

"We will take every possible means to pursue the unforgivable crimes and responsibility of all three."

http://www.telegraph.co.uk/news/worldnews/asia/malaysia/10718181/Malaysia-Airlines-MH370-live.html

Edited March 24, 2014 by ExExpat

[mota bhai 2,675]

Silly Chinese.

[Mr. Big Dog 10,747]

Criminal act? While there were certainly a lot of theories out there - including that of a heist - I think the most plausible explanation offered to date was this one.

A Startlingly Simple Theory About the Missing Malaysia Airlines Jet

[We Keep Receipts 9,238]

It's easier to blame someone in the face of tragedy...

[Mr. Big Dog 10,747]

It's easier to blame someone in the face of tragedy...

They'll eventually piece this together. Seems that they've narrowed in on the crash site and that will hopefully lead to the recovery of some of the wreckage and the recorders. Then the experts will have something to go on and come to conclusions. This continuous nonsense on all these unsubstantiated theories really isn't helpful.

[Operator 1,927]

It's easier to blame someone in the face of tragedy...

From what I've seen the Malaysian government have done fairly good job of making themselves a target for blame.

[Mr. Big Dog 10,747]

From what I've seen the Malaysian government have done fairly good job of making themselves a target for blame.

That I would agree with. This tragedy was handled just about as poorly as one could imagine.

[We Keep Receipts 9,238]

From what I've seen the Malaysian government have done fairly good job of making themselves a target for blame.

I can't say because I wasn't there, nor do I have any idea how I would have handled the situation if I were in their shoes.

[Pooky 3,840]

They'll eventually piece this together. Seems that they've narrowed in on the crash site and that will hopefully lead to the recovery of some of the wreckage and the recorders. Then the experts will have something to go on and come to conclusions. This continuous nonsense on all these unsubstantiated theories really isn't helpful.

I'm not so optimistic.

Searchers knew where AF447 went down to within a 40 square mile patch of ocean. They had spotted debris on the first day of the search. Yet it still took 2 years to effect the salvage of the flight data recorders.

With MH370, they think it's down somewhere in the Indian Ocean. I doubt they are ever going to solve this one. Which isn't reassuring.

[Mr. Big Dog 10,747]

Give them time. The search for MH370 in the deep waters is just now set to start. They'll get there.

German scientists are readying a deep sea search submarine to join the hunt for the missing Malaysia Airlines flight MH370

[Pooky 3,840]

Give them time. The search for MH370 in the deep waters is just now set to start. They'll get there.

German scientists are readying a deep sea search submarine to join the hunt for the missing Malaysia Airlines flight MH370

It's a big patch of nowhere to search, when we have no clue where to begin.

[Mr. Big Dog 10,747]

It's a big patch of nowhere to search, when we have no clue where to begin.

Nobody says it'll be easy or swift but I think that we'll collectively do all that can be done to find the wreckage and figure out what happened. Is there a chance that we won't find it? Yes, there is. But I am not ready to throw in the towel just yet.

[LibCampFireClub 635]

Several reports are now emerging from Malaysia that detail how Malay authorities have deliberately hidden or impeded investigating the flight disappearance. It not surprising that they are pulling the religious card to legitimize it.

In a separate development, The Mail on Sunday has learned that investigators are now poised to question Captain Shah’s estranged wife in detail. They have waited two weeks out of respect, but will now begin formally interviewing Faizah Khan following pressure from FBI agents assisting the inquiry.

Although the couple – who have three children – were separated, they had been living under the same roof.

A source said: ‘Faizah has been spoken to gently by officers but she has not been questioned in detail to establish her husband’s behaviour and state of mind in the days leading to the incident.

‘This is partly for cultural reasons. It is not considered appropriate in Malaysia to subject people in situations of terrible bereavement to the stress of intensive questioning.’

The softly-softly approach has been challenged by the team of FBI agents working with Malaysian police. They have pointed out that she may hold ‘vital clues and information’ to Zaharie’s mental state.

‘The whole world is looking for this missing plane and the person who arguably knows most about the state of mind of the man who captained the plane is being left alone,’ said a source close to the FBI team.

The source added: ‘If we want to eliminate the chief pilot from the inquiry, we must interview her in detail to find out what his state of mind was.

http://www.dailymail.co.uk/news/article-2587064/Probe-mystery-call-captain-doomed-jet-Unknown-woman-used-fake-ID-buying-phone-bypass-security-checks.html

Edited March 25, 2014 by ExExpat

[LibCampFireClub 635]

25/03/14

on 13 march we received information from uk satellite company inmarsat indicating that routine automatic communications between one of its satellites and the aircraft could be used to determine several possible flight paths. Inmarsat uk has continued to refine this analysis and yesterday the aaib presented its most recent findings, which indicate that the aircraft flew along the southern corridor.

As you have heard, an aircraft is able to communicate with ground stations via satellite.

If the ground station has not heard from an aircraft for an hour it will transmit a 'log on / log off' message, sometimes referred to as a ‘ping’, using the aircraft’s unique identifier. If the aircraft receives its unique identifier it returns a short message indicating that it is still logged on. This process has been described as a “handshake” and takes place automatically.

From the ground station log it was established that after acars stopped sending messages, 6 complete handshakes took place.

The position of the satellite is known, and the time that it takes the signal to be sent and received, via the satellite, to the ground station can be used to establish the range of the aircraft from the satellite. This information was used to generate arcs of possible positions from which the northern and southern corridors were established.

Refined analysis from inmarsat

in recent days inmarsat developed a second innovative technique which considers the velocity of the aircraft relative to the satellite. Depending on this relative movement, the frequency received and transmitted will differ from its normal value, in much the same way that the sound of a passing car changes as it approaches and passes by. This is called the doppler effect. The inmarsat technique analyses the difference between the frequency that the ground station expects to receive and that actually measured. This difference is the result of the doppler effect and is known as the burst frequency offset.

The burst frequency offset changes depending on the location of the aircraft on an arc of possible positions, its direction of travel, and its speed. In order to establish confidence in its theory, inmarsat checked its predictions using information obtained from six other b777 aircraft flying on the same day in various directions. There was good agreement.

While on the ground at kuala lumpur airport, and during the early stage of the flight, mh370 transmitted several messages. At this stage the location of the aircraft and the satellite were known, so it was possible to calculate system characteristics for the aircraft, satellite, and ground station.

During the flight the ground station logged the transmitted and received pulse frequencies at each handshake. Knowing the system characteristics and position of the satellite it was possible, considering aircraft performance, to determine where on each arc the calculated burst frequency offset fit best.

The analysis showed poor correlation with the northern corridor, but good correlation with the southern corridor, and depending on the ground speed of the aircraft it was then possible to estimate positions at 0011 utc, at which the last complete handshake took place. I must emphasise that this is not the final position of the aircraft.

There is evidence of a partial handshake between the aircraft and ground station at 0019 utc. At this time this transmission is not understood and is subject to further ongoing work.

No response was received from the aircraft at 0115 utc, when the ground earth station sent the next log on / log off message. This indicates that the aircraft was no longer logged on to the network.

Therefore, some time between 0011 utc and 0115 utc the aircraft was no longer able to communicate with the ground station. This is consistent with the maximum endurance of the aircraft.

This analysis by inmarsat forms the basis for further study to attempt to determine the final position of the aircraft. Accordingly, the malaysian investigation has set up an international working group, comprising agencies with expertise in satellite communications and aircraft performance, to take this work forward.

In annex i (attached) there are three diagrams, showing:

Doppler correction contributions

this diagram shows the doppler contributions to the burst frequency offset.

Mh370 measured data against predicted tracks

the blue line is the burst frequency offset measured at the ground station for mh370.

The green line is the predicted burst frequency offset for the southern route, which over the last 6 handshakes show close correlation with the measured values for mh370.

The red line is the predicted burst frequency offset for the southern route, which over the last 6 handshakes does not correlate with the measured values for mh370.

Example southern tracks

this shows the southern tracks for a ground speed of 400 and 450 knots ground speed. It should be noted that further work is required to determine the aircraft speed and final position.

http://www.pprune.org/8399949-post8063.html

Edited March 25, 2014 by ExExpat