I consider this to be a fairly important point
Last radar contact at 2.15 in malacca strait. The position being suggested could quite easily have been UAE405 or UAE343 which would have been pretty much on top of this location at that time. They would have seen it or is the military mixing up this blip as it is also a 777? Just my 2 cents Robbie |
Originally Posted by SeenItAll
(Post 8376026)
Agreed that the "triangulation" that would be used would likely not be based on signal strength because the difference in power attenuation would be miniscule between satellites, the atmospheric fade would be different, and because power is measured not to an adequate level of precision. But time can be and is measured to exquisite levels of precision. Differences in time of receipt of signal from satellites is how GPS works. To the extent that location can be inferred, it would be inferred from the difference in time that each satellite received the signal from the aircraft. But unlikely that more than two satellites received a signal, so you would not be working with triangulation, which can resolve to a point on a plane. You would be working with biangulation (is that a word?), which can only resolve to a line. But that would still be extremely useful.
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If it is an act of piracy, I don't see that they would need to land the plane on a runway. They could land it on the sea, particularly if they were indifferent to the risk of a water landing. If they then had a reception committee to collect any diverted cargo, they would still have accomplished their mission.
That still presumes some kind of valuable cargo of course... |
Moving ahead
"Whatever happens I can see a mandated introduction of GPS location reporting for all long haul aircraft relaying constant position reports via a secure sat comms link with no access or control function from from flight deck"
^^^^^^^This, or something along those lines. Other factors highlighted from MH370 include poor check-in procedures that need to be redressed (not only at KUL but many airports). There have been concerns expressed by many pilots, that theoretically it is possible to exclude a fellow pilot from the flight deck, how this can be combatted is another issue. Personally I have pushed for greater psychological evaluations in the past, rather than the odd questions, "so any problems at home" (and I am not inferring anything regarding this flight crew). And the basics of noshos and procedures highlight the fact unless all procedures are followed to the book, then we increase the risk of an incident. Sadly we are put under pressure to meet your timeslot to avoid delay (for numerous reasons). Above all it requires better internal auditing of crews and their procedures, and this includes every facet of the operation. I am not saying any reasons above caused this incident or could have prevented it, but it does show we have cracks in our systems (and this is systemic throughout the industry). The reasons for this disappearance will not be known until we find the T7 and when the reason is known, we can implement new or improved checks in. That said, sometimes our worst enemy is complacency or "she'll be right mate". |
Mention has been made that although the flight was not full (with 50 or more unoccupied seats) there were passengers who flew standby. The reason given for this in this thread was that cargo uplift may have limited passenger capacity.
Question - how often does routine cargo on a passenger flight displace this much passenger uplift capacity? If it was revealed that the cargo included a heavy valuable substance weighing as much as 50 passengers and their baggage, how many reading this thread would change their mind as to likely cause? Pax list also contained some 30 odd state of the art cyber warfare techies and execs from 5 global organisations, many with direct links to China. Coincidence? |
The plotted path
as it is best understood
https://pbs.twimg.com/media/BirwabjCIAACtVF.png:large as provided by Disparition du Vol MH370 : la zone de recherche étendue à l?Océan Indien | Air Info This is the path before adding on the new statement from the US/Malaysia team, which indicates around the end point of the plotted path one of two directions were taken - one in the SW direction toward MEMEK and one nearly due north toward SANAR According to CNN, the US and India have basically determined one of those directions is where the plane will be found, and that is where the two Countries will be looking headed froward |
Has there ever been a Case that Autopilot does 'weird' things after electrical failure, and Crew being unable due to any reason.
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Sharp Changes in Altitude and Course After Jet Lost Contact
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Quote 'live chat on channel 5 in uk currently, not sure how credible panel is...
Correction...after listening to the pilot on there its channel 5 fodder, hardly surprising i guess.' End Quote Oh my, some dozy 'whatever' just put across a 'cyber hijack' as a credible theory Righto |
Via CNN:
A classified analysis of electronic and satellite data, conducted by the United States and Malaysian governments, calculates Malaysia Airlines Flight 370 likely crashed into the Indian Ocean on one of two possible flight paths, CNN has learned. One flight path suggests the plane crashed into the Bay of Bengal off the coast of India, and the other has it traveling southeast and crashing in the Indian Ocean, according to the analysis. |
TAS is the speed relative to the air.
If you want to get somewhere fast, it's GS (groundspeed) that's relevant. |
1 August 2005 - A Boeing 777-200 operating as Malaysia Airlines Flight 124 departed Perth for Kuala Lumpur. Climbing through 38,000 feet a faulty accelerometer caused the aircraft's Air Data Inertial Reference Unit (ADIRU) to command changes of altitude. The flight crew overrode the ADIRU and manually returned to land the aircraft at Perth. Subsequent NTSB investigation led the US FAA to issue emergency airworthiness directive 2005-18-51 on the fly-by-wire software.
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Gulliver78,
The Chinese "seismic activity" was just that: The U.S. Geological Survey (USGS) did locate an approximately 2.7 magnitude earthquake off the west coast of Sumatra at the time of the "seismic event" noted by the Chinese, said Harley Benz of the USGS National Earthquake Information Center in Denver. |
However, his crazy video did have the aircraft ascending to 45,000 ft... I fear the author of the article in the NY Times may have been duped and is quoting sources but the source is that poorly made youtube video... |
Originally Posted by dmba
(Post 8376092)
I fear the author of the article in the NY Times may have been duped and is quoting sources but the source is that poorly made youtube video... |
@SeenItAll
Differences in time of receipt of signal from satellites is how GPS works. I will leave it to someone more qualified than me to explain, but I know that analysis of spot beam coverage and the transmission on particular spot beams comes into the reckoning. |
Originally Posted by VinRouge
(Post 8375967)
Glen brook, Not impossible using the Doppler info on the signal from each satellite (frequency shift).
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etudiant 3335
Agreed
Jet fuel v Ship Diesel have utterly different Mass Spec signatures screw the Mr Av similarities With the right kit, the work of a moment to differentiate Just a chemist |
slowly but surely..
As we are slowly been fed information by various sources, are we being prepared from something they already know ?...disgruntled F/O ? Colleagues/company may have been aware of this ..?
If you log out of acars, then turn off the transponder, then head west via known waypoints, you are either doing this willingly or with, as the expression goes..."a gun to your head "..... |
45000 feet?
With the fuel load they had at that point, how high could they go without stalling? Other interesting question would obviously be: did it first climb and then change direction, or the opposite, or at the same time? |
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