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Malaysian Airlines MH370 contact lost

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Malaysian Airlines MH370 contact lost

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Old 26th Mar 2014, 13:57
  #8201 (permalink)  
 
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Fire suppression bottle.

LFRT
"Maldives Police Services (MPS) reported that reports of such an object were filed with the department yesterday evening around 5.30 pm and that Maldives National Defense Force (MNDF) had taken in the object.

MNDF Spokesperson Major Hussain Ali said that the object is an explosive and the MNDF Northern Area team is active in the area."
The appearance of the fire suppression bottle is superficially similar, but their are differences. The Maldive item is a mine, not a fire suppression bottle.
I'll bet that the dimensions are different as well. The mine has a circumferential weld that is not visible on the fire bottle. The angle of the "ports" (fuses) is wrong for a fire bottle. There appears to be the remains of an anchor cable attached to the mine.
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Old 26th Mar 2014, 14:01
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Originally Posted by Trim Stab
After MS667 Boeing mandated modifications to the co-pilot oxygen system which had probably caused this fire. Does anybody know if the MH370 aircraft had received this modification?
I'd suggest that if the modification was "mandated", the answer might be yes......

I don't really buy this theory. A fire which on one hand is so severe and fast spreading that it incapacitates the pilots and compromises the structural integrity of the aircraft, yet on the other allows the aircraft to be a) maneuvered and b) continue flying, straight and level, for several hours seems quite implausible.
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Old 26th Mar 2014, 14:10
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Originally Posted by LFRT
[Notice the way it's strapped]



Originally Posted by Machinbird
LFRT
The appearance of the fire suppression bottle is superficially similar, but their are differences. The Maldive item is a mine, not a fire suppression bottle.
I'll bet that the dimensions are different as well. The mine has a circumferential weld that is not visible on the fire bottle. The angle of the "ports" (fuses) is wrong for a fire bottle. There appears to be the remains of an anchor cable attached to the mine.
How large is it? It looks a lot like part of a Biomarine Re-breather.








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Old 26th Mar 2014, 14:10
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Garage man -How do you know the plane is not largely intact?The ocean is full of debris and none has yet been identified as mh370.Even on fuel starvation the fly by wire system on the 777 would not allow a stall and the plane could have impacted at low vertical speed and 200kts airspeed or lower assuming cmd engagement and no pilot input.Waves may have broken off bits but the fuselage could be largely intact?
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Old 26th Mar 2014, 14:16
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Lost,
Good find! That second photo really looks like what they found. Hard to tell the size of it. Yours looks like about the size of a soccer ball...?
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Old 26th Mar 2014, 14:18
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@LFRT

Those "spheres" are very different in construction.

The mark around the one that washed up is a welded join.

I think the one that washed up is more likely a mine than anything off an aircraft

Last edited by Msunduzi; 26th Mar 2014 at 14:23. Reason: clarify
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Old 26th Mar 2014, 14:23
  #8207 (permalink)  
 
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The appearance of the fire suppression bottle is superficially similar, but their are differences. The Maldive item is a mine, not a fire suppression bottle.
Its not a mine. I reckon its a fire bottle; it certainly looks like the ones I have flown. From a 777 not sure. Fire bottles are an absolute nightmare to transport, due to their IATA classification. I believe they are classed as both toxic/non flam gasses as well as UN Class 1.2.

Having flown a couple, I can testify to the large amount of DG paperwork required to fly them. the UN class 1.2 is due to the explosive squib which pierces the burst disk to initiate the release of agent.

http://quick.aero/sterling/blog/how-...on-explosives/

http://aircraftengineering.wordpress...ag/wheel-well/

Sizing wise, could be the poo fire bottle? No reason to suspect its from the 777 though, as its such a long way from the primary search site! If the serials match MH370, there are going to be big headaches as to where the jet went in.

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Old 26th Mar 2014, 14:24
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Turbulence

>Indeed, despite the revelations from the DFDR and CVR when they were recovered that turbulence was not involved, there were still posts claiming that the crash was due to severe turbulence.

But no one suggested that given the storm line turbulence was not present, or that flying attitude without instruments, or intermittent or conflicting instruments, at night without a horizon, would not be more difficult than smooth air. Turbulence probably contributed to confusion in an already confused situation. And my bet is that turbulence would be about the last thing pilots would mention. "Gee its turbulent."
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Old 26th Mar 2014, 14:24
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Where is Debris

GarageYears
Uhhg... what fantasy land do you live in? Please give me one example of a large widebody jet *landing* on the ocean and remaining even close to intact? And if you mention Sully and the A320 on the Hudson... immediate disqualification - a relatively smooth and calm river is NOTHING like the Indian Ocean on ANY day of the year.
Let me use your intuitive assumption in this case, if it is not possible for a big aircraft to stay intact after ditching in waves, coupled with the fact that Inmarsat is pointing in the right direction, we should have found atleast some debris by now. You have to keep in mind that search effort is also going on using satellite imagery by multiple nations and TomNod,not counting ships that arrived into aearch area from different directions.
1. Big plane loaded with passengers, luggage and cargo
2. Thousands or more floatable plastic parts

If the aircraft did not stay intact (a highly logical assumption), atleast some debris should have been spotted by now. However, lack of any debris discovery anywhere (Aircraft,Satellites, Ships) argues that in this case the plane possibly did not break apart.
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Old 26th Mar 2014, 14:28
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Re broken aerial feeds it appears the AD re structural problems did not impact this a/c. Maybe it should have? I also have had a reply that the power source/ feeds for a lot of the comms. VHF HF TSPDR ACARS but not the SATCOM shared a common path. That's hard to believe but it would lead to extra workload for the crew just at the point when they were sorting out a major problem. Any initial calls would be dead & a crew trying to sort out a major emergency would not waste time on this extra minor problem. They would probably believe they had just left VHF range. It also appears the A/P uses a different source which could explain why the a/c made a turn etc.
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Old 26th Mar 2014, 14:34
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Bono

Yes, but two caveats: 1) Even narrowed down, the search area is the size of Texas and Oklahoma combined. 2) There still remains the possibility that they are NOT in fact searching in the right place. In fact the only piece of "stuff" even remotely resembling debris is the fire bottle/mine/breathing gear in the Maldives. I know - very tenuous link indeed, but it's the only thing to come out of the water so far.
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Old 26th Mar 2014, 14:37
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Originally Posted by Walnut
Re broken aerial feeds it appears the AD re structural problems did not impact this a/c. Maybe it should have?
That was mostly cleared up about 200 pages ago. To sum up: absent a certain airframe mod, the bulletin would not apply to this hull. That's the info available to the public so far.
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Old 26th Mar 2014, 14:40
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@minimaman: The Indian Ocean isn't some smooth, unruffled surface where an airliner could skim the surface before coming to rest - even if it were being flown by a great pilot, rather than just relying on its natural stability as you're suggesting. An aircraft hitting water at 200kts is not going to remain intact, it will be smashed to pieces. Imagine what a truck would look like after hitting a motorway bridge at 60mph, then scale that up by a factor of 10 for the higher energy of the aircraft speed you're suggesting. The only large pieces remaining intact will be those torn off at the root by the impact, such as wings and tail surfaces.
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Old 26th Mar 2014, 14:49
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Where Is Debris?

MichaelKPIT
Bono
Yes, but two caveats: 1) Even narrowed down, the search area is the size of Texas and Oklahoma combined. 2) There still remains the possibility that they are NOT in fact searching in the right place. In fact the only piece of "stuff" even remotely resembling debris is the fire bottle/mine/breathing gear in the Maldives. I know - very tenuous link indeed, but it's the only thing to come out of the water so far.
1. Big passenger plane hits water, breaks apart and spews debris of all kinds
2. Roaring forties will spread debris far and wide within days
3. Satellites looking across hundreds of miles will spot atleast some debris within a few days using Inmarsat data
4. Aircraft and ships will be notified and regular search and investigation will follow.


It sounds all logical but nothing, absolutely nothing has been spotted, so cross off #3. If they do not find anything in a week's time, start looking underwater.
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Old 26th Mar 2014, 14:50
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Originally Posted by Leightman 957
>Indeed, despite the revelations from the DFDR and CVR when they were recovered that turbulence was not involved, there were still posts claiming that the crash was due to severe turbulence.

But no one suggested that given the storm line turbulence was not present, or that flying attitude without instruments, or intermittent or conflicting instruments, at night without a horizon, would not be more difficult than smooth air. Turbulence probably contributed to confusion in an already confused situation. And my bet is that turbulence would be about the last thing pilots would mention. "Gee its turbulent."
Actually they did mention the turbulence and told the rear crew that the pax should be strapped in. However, it is always like that flying through the ITCZ. The CVR and DFDR showed the LOC was almost certainly due to lack of experience/practice in limited panel manual flight at altitude with unreliable speed indications when in Alternate Law.
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Old 26th Mar 2014, 14:50
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I'd believe it was a piece of discarded rocket debris before I'd believe it came from a 777. Not least because it's 5,000km away from Oz.
Good point. lots of stuff ends up in the indian ocean from launches in the US and South american launch sites.
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Old 26th Mar 2014, 14:53
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AFAIK MAS do not allow non crew to be in the FD but just like anything else there are rules written on paper and then there is real life. I'll leave it at that.
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Old 26th Mar 2014, 14:57
  #8218 (permalink)  
 
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GarageYears. Uhhg... what fantasy land do you live in? Please give me one example of a large widebody jet *landing* on the ocean and remaining even close to intact? And if you mention Sully and the A320 on the Hudson... immediate disqualification - a relatively smooth and calm river is NOTHING like the Indian Ocean on ANY day of the year.
Did not the Tristar land in the Florida Everglades.
T7 crash in San Fran bounced around a fair bit, just check out the videos on YouTube there should be plenty to choose from. Remainder of Aircraft stayed in tact. Bits of flaps missing.

Anything is possible and actually having some waves to cushion the impact so less chance of a breakup.

Chances are some of the flaps and other control surfaces came off and these are what is likely the debris, if it is actually from MH370.

Please give one example of a wide body attempting to land and breaking up!

Last edited by James7; 26th Mar 2014 at 15:00. Reason: Added
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Old 26th Mar 2014, 14:58
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An 'aviation expert' has stated that, within the console of the B777, there is a satellite 'phone.
I've wondered about that. If the crew were conscious and wanted to communicate, even if the radios and ACARS were out, they should still be able to use the phone. Unless that had somehow become disconnected from the SATCOM terminal by whatever affected the radios.
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Old 26th Mar 2014, 15:03
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Ditching

Originally Posted by GarageYears
what fantasy land do you live in?
I know what you're saying but it does beg the question why the safety briefing for trans-ocean flights doesn't include a caveat something like, "there's no way we can land this thing safely in the ocean but for your comfort and convenience, .....". But let's not go there
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