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

CowgirlInAlaska 20th Mar 2014 07:54

ps
 
Things under water appear a little larger, so if they're stating the largest object is approximately 24 meters, how much of that should be 'shrunk' to result in actual size? IF I'm right as to my guess that it's the tail, would it be accurate that it's 20 meters actual length/height? I defer to you experts! :)

Mesoman 20th Mar 2014 07:54

Not stereo Pair
 

The photos are a stereo pair. If you have the focal length of the camera and the height of the aircraft then you have the (approximate) scale of the photo. Then you can calculate approximately the length of the object.
No, the photos represent different ways of looking at spectral information. The one on the left is brightness from all wavelengths together (monochrome). The one on the right is false color, showing information about various wavelengths and combinations by the color in the image.

This sort of thing is common in remote sensing. Spectral information can tell you interesting things - it is color vision, except the "colors" are not the ones your eyes see.

That being said, I can't tell you what the colors mean. That's why they have specialists.

Silver Shadow 20th Mar 2014 07:57

Object 2
 
Object 2

Note this is Object 2 -- different coordinates to Object 1

Volume 20th Mar 2014 07:57


Anybody have an informed opinion on how long it might take an fbi expert to recover deleted files off a computer?
To identify how many files were deleted and what they were is a matter of minutes. To understand its content can take forever. A file is not like a sheet of paper anybody can readily read. To understand what temporary files of certain programs do contain is a little more complicated. If you want to track back remainders of windows virtual memory file sectors to certain programms, you need to be a real nerd, but may find very conclusive content. There is a good chance that the programm with the highest memory demand recently running was the flight simulator, so there should be a lot of not yet overwritten pieces of virtual memory on that computers hard drive. Windows is not at all optimized for privacy and security...

harrryw 20th Mar 2014 07:58

@PilotMike
On a 777 do you input the s43e80 by typing the letters or do use use an input box with s/n etc?

Scissorlink 20th Mar 2014 08:01

Didn't the Air France and XL/Air New Zealand tails float as well ? How long would they float for ?

Capt Kremin 20th Mar 2014 08:01

To the speculators...

Scenario:

Fire/damage sufficient to disable any chance of communicating with outside world.

*Aircraft made at least four changes to its track. Fire/damage did not destroy Satcom system. No communications indicating problem. Fire/damage of that magnitude unlikely to leave aircraft in condition to fly on.

Contra-indicated.

Rapid depressurisation disabled pilots.

* Aircraft made at least four changes to its track. Transponder and ACARS Intentionally disabled.

Contra-indicated

Slow decompression was not noticed by crew.

* Aircraft made at least four changes to its track. Transponder and ACARS intentionally disabled. EICAS system would have alerted crew to high cabin pressure well before incapacitation. Cabin oxy masks would have fallen in cabin at pre-determined altitude, Flight crew would have been alerted by cabin crew.

Contra-indicated.

Aircraft shadowed other aircraft to escape detection

* Aircraft, on a moonless night, would have had to track and intercept target aircraft visually as TCAS turned off with transponder. Dark night and heavy aircraft. Neither pilot seems to be formation rated. Flight at 35000 feet, and above as target aircraft climbs, leaves no performance margin for close station keeping. Air to air refuelling of large aircraft takes place around FL250 due to aforementioned performance limitations. Air defence radars would have picked up two large paints. Aircraft required to fly dangerously close to target aircraft for many hours.

Contra-indicated.

Aircraft had emergency and tracked towards Langkawi

* Not supported by Satcom ping data.

Contra-indicated

Aircraft went north over Asia

* No record of any unidentified aircraft on various countries Air defence radars. Extremely unlikely to find, intercept and hold position with another aircraft flying between FL350-390 for length of time required.

Contra-indicated

Aircraft hijacked by passengers

*Security procedure make this difficult but not impossible. High degree of technical knowledge required to fly revealed track and disable ACARS. No evidence of any terrorist links to anyone on passenger list. Aircraft disappearance not compatible with usual terrorism objectives. Passengers and crew would be unable to enter cockpit to restore control if locked out.

Contra-indicated but possible.

Interference by flight crew

*No revealed motive to do so.

Possible.

Oldpilot55 20th Mar 2014 08:02

Mesoman
 
Agreed.
Yes, it was a mistake. They are different spectrums. I've corrected the post. The scale calculation is correct though.

glenbrook 20th Mar 2014 08:02


Originally Posted by CowgirlInAlaska (Post 8389579)
I positioned a B777 against the AMSA find... what do you think?

The tail height is 18.5m not 20 meters and that is from the ground to tip of the VS. The actual height of the VS from fuselage is about 10m.
Your superimposed T7 pic looks about 2x too big. Whatever that object is, it can't be the tail (assuming 24m is accurate).

fox niner 20th Mar 2014 08:03

Bono:

Suppose no one was alive on board, but it was happily cruising along at 29500 ft, heading south.

The autopilot would keep this going as long as possible. When fuel starvation sets in, one main tank will be empty before the other main tank. This is because one engine will always consume more, fuel flow wise, than the other.
The first engine flaming out will be corrected by the TAC. No problem. Also, a 777 at zero fuel weight (ZFW) will be able to maintain FL295 with one engine.

A few minutes later the other engine flames out. All generators will drop off, so no electric power is provided. However, the RAT will kick in, providing electrical power to, also, the autopilot. (Actually, only the transfer busses, but the Autopilot is on this)
The autopilot will try to maintain FL295, but is unable to do so due to lack of engine thrust. When top of yellow band is reached, the autopilot will slowly descend with this speed until impact. This is also what happened in london with the BA 777 on the ILS when it flamed out. The A/P flew the aircraft against the ground at heathrow with minimum speed.

All a bit rusty, I last flew the 777 three years back.

nitpicker330 20th Mar 2014 08:07

I'd bet the transfer of power would drop the A/P off......the NBPT ain't that good.

The BA 777 suffered a "Thrust rollback",the engines were still running along with their IDG's powering the Aircraft.

Toruk Macto 20th Mar 2014 08:09

Could it be part of fuselage ? Maybe half a fuselage with 2 or 3 rips ? What's the diameter of fuselage ?

normanton 20th Mar 2014 08:09

The Aussies must think they are onto something....

More images of a 2nd object have been released on social media.

bille1319 20th Mar 2014 08:15

objects or red herrings?
 
The large one: part of a wing, life raft, shipping container; The small one: part of awing, a large canoe?
Given the maneuvres MH-370 was up to as she crossed Malaysia I would doubt she had the range to make to the Southern Ocean!

buttrick 20th Mar 2014 08:16

Scenario debunking
 
I think you are forgetting that NONE of the radar returns after IGARI can be confirmed as mh370!!! Only that there MIGHT have been AN aircraft giving a return!!

Tokyo Geoff 20th Mar 2014 08:16

https://twitter.com/cctvnews/status/446558464005783552

#US P-8 has arrived in Indian Ocean area; US 7th Fleet spokesperson confirms they have located the debris identified by #Australia. #MH370

Shouldn't be long now until we have some clarity on whether this is MH370.

Hunter58 20th Mar 2014 08:20

There is plenty of ships/yachts that have been lost in the souther ocean. Since there is no land obstruction such wrecks have a tendency to circumnavigate the globe several times before going north, and the latter is an if.

24m is no size for a smaller vessel in parts and the second picture looks very much like a yacht.

I fear we will have some disapointment.

itflewinitflewout 20th Mar 2014 08:22

Just as a general coincidence of course, I recall that the empennage of the Air France 330 off the Brazilian coast - was the first part of the aircraft to become apparent in the water. Just an observation, I claim not to know any 'hows'.

(The empennage is relatively light from my humble experience, with much space inside, having been up in and around Boeing tails for various reasons). Rgds

parabellum 20th Mar 2014 08:22


"Following specialist analysis of this satellite imagery, two possible objects related to the search have been identified."

To me, "identified" means they know what they are looking at.


No fuel means the wreckage would have some considerable buoyancy perhaps, if the fuselage is intact then, sadly, the strapped in bodies may now also be providing some buoyancy.

costalpilot 20th Mar 2014 08:26

According to fox and cnn reporters, the search area where this debris was found was defined by information from usa faa, ntsb n intelligence community. This relatively small search area was outlined on CNN maps displayed all day yesterday. That they have found this debris in this area which was highlighted by those agencies gives more expectation for positive ID than any other possible search area find, imo.

anybody know the size of the largest piece of af 447 that was recovered?


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