Missing Malaysia Airlines flight MH370

susan6

Well-Known Member
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4,261
I had a similar question. How far can a radar station track a plane? Maybe it was hijacked and the pilots were forced to make a U-turn and then fly "under the radar" to some undisclosed destination.

Yeah, with the new info, this is becoming a bit more likely....apparently the pilots (if forced by a hijacker) can turn off their transponders, which makes the aircraft invisible to civilian radar but it can still be seen by military radar. So maybe it was hijacked and forced to turn around to go somewhere else.

The effect of turning off the transponder is to make the aircraft inert to secondary radar, so civil controllers cannot identify it. Secondary radar interrogates the transponder and gets information about the plane's identity, speed and height. It would however still be visible to primary radar, which is used by militaries.

http://www.slate.com/blogs/the_slat...ells_reuters_that_mh370_was_last_spotted.html

One question....would passengers be able to text or email, would that be picked up anywhere? (Or would the hijackers turn off the wifi or whatever?) Because it sounds like the plane made a drastic change in course, probably under duress (whether mechanical or human-made), and flew in a different direction for at least an hour.
 

MsZem

I see the sea
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18,495
Yeah, with the new info, this is becoming a bit more likely....apparently the pilots (if forced by a hijacker) can turn off their transponders, which makes the aircraft invisible to civilian radar but it can still be seen by military radar. So maybe it was hijacked and forced to turn around to go somewhere else.
I'm not sure that turning off the transponder necessarily makes the plane invisible to civilian ATC; I think it means that they will be working with a lot less data since what they can get from primary radar is more limited.

Turning off the transponder also means that the collision avoidance system is turned off, though that's not relevant to this case (or we'd have two missing planes...)
 

IceAlisa

discriminating and persnickety ballet aficionado
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37,284
The Malaysian government is handling this strangely to say the least.
 

mag

Well-Known Member
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12,198
Sad that one aspect of the technology should be giving family members false hope. :(

It is sad. It would never occur to me that hearing a phone ring when I call it would have anything to do with the phone ringing on the receiving end. I guess a lot of people have no idea how the technology works.

In the absence of any meaningful information families are understandably clinging to whatever hope they can find. It must be just terrible knowing deep down that your love ones are probably dead, but still not knowing. What a nightmare!
 

Buzz

Socialist Canada
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37,395
There is a report on Australian television that the co-pilot allowed two young Australian women into the cockpit during in 2011 and she has pictures to prove it. Aeroflot flight 593 crashed with no survivors in 1994 when the pilot allowed his children into the cockpit. They accidentally turned off the auto pilot which sent the plane into a steep dive. The pilot realized what was happening too late to do anything about it. So maybe the pilots allowed someone into the cabin and was too distracted to keep a close eye on the controls.

http://www.dailymail.co.uk/news/art...d-friend-ride-cockpit-entire-flight-2011.html

http://en.wikipedia.org/wiki/Aeroflot_Flight_593
 

IceAlisa

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The more information we get, the less it makes sense. If you look at the map, the last recorded position of the plane via military radar was way off course: http://news.yahoo.com/malaysian-military-missing-jet-changed-course-200731719.html?vp=1
But local newspaper Berita Harian quoted Malaysia's air force chief, Gen. Rodzali Daud, as saying that radar at a military base had tracked the jet as it changed its course, with the final signal at 2:40 a.m. showing the plane to be near Pulau Perak at the northern approach to the Strait of Malacca, a busy waterway that separates the western coast of Malaysia and Indonesia's Sumatra island. It was flying slightly lower, at around 29,528 feet, he said.
What was it doing there and why didn't it notify ground control? Rhetorical question at this point.
 

mag

Well-Known Member
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12,198
The more information we get, the less it makes sense. If you look at the map, the last recorded position of the plane via military radar was way off course: http://news.yahoo.com/malaysian-military-missing-jet-changed-course-200731719.html?vp=1

What was it doing there and why didn't it notify ground control? Rhetorical question at this point.

The only explanation I can think of is that the airplane was hijacked and the pilot forced to change course. Then, at some point the pilot or pilots figured out what the hijackers intentions and decided that crashing the plane was the better option. Or, the passengers tried to over power the hijackers and the plane crashed into the ocean.
 

agalisgv

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From the beginning i thought it might be a hijacking. If so, i would assume negotiations would take place without the public knowing. So the lack of info would be something i would expect in such a case.

Course anything could have happened, but i wouldn't expect the media to be told anything regarding the plane's possible whereabouts if hostages were involved.
 

Skittl1321

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17,331
That would be a lot like one of the 9/11 planes, that the passengers forced down. If they thought the plane would be used as a weapon.

Of course, hijackers, if they planned to hold it for ransom, may have just accidentally crashed the plane.
 

IceAlisa

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The only explanation I can think of is that the airplane was hijacked and the pilot forced to change course. Then, at some point the pilot or pilots figured out what the hijackers intentions and decided that crashing the plane was the better option. Or, the passengers tried to over power the hijackers and the plane crashed into the ocean.
But no plane has been found in those relatively shallow waters so far despite the massive search effort involved, that's what's puzzling.
And if the government is aware of the plane's whereabouts, why continue the widespread search effort involving international military and rescue teams?
 

Marge_Simpson

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6,371
Could North Korea have orchestrated this somehow?
They have no gripes with Malaysia, AFAIK, but their relationship with China has been rocky lately. And they've been known to do bizarre things, ie kidnapping Japanese citizens and South Korean filmmakers.
 

Coco

Rotating while Russian!
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Aren't most planes programmed to follow a route? If so, could someone have hacked into the route and altered it?
 

misskarne

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That pilot showed amazing presence of mind during crisis.

Yes, even when he must have realised the plane was doomed because the hijackers were too stupid to understand that just because the plane was capable of carrying that much fuel, it didn't mean it WAS.

He did an impressively good job; it was just such a horrible shame he got caught by the water.
 

zippy

Active Member
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578
But no plane has been found in those relatively shallow waters so far despite the massive search effort involved, that's what's puzzling.
And if the government is aware of the plane's whereabouts, why continue the widespread search effort involving international military and rescue teams?

Actually it looks like there's a huge drop-off not far from the place now marked as the last place it was seen on radar (a depth of 5000 feet just a little northwest of that point, and deeper in the more open waters outside of the Strait of Malacca). If it didn't crash in the Gulf of Thailand or the southern part of Strait of Malacca, it could be really hard to find. Not to mention that if it actually was hijacked, it could be anywhere - radar coverage would be really spotty past that point where it was last seen. The caginess of the Malaysian authorities almost has me wondering if they might have shot the plane down. I think with this new turn of events, hijacking of course looks possible but could also be some kind of profound loss of the plane's electrical systems that resulted in the pilots trying to blindly navigate their way back to Kuala Lumpur by trying to hug the west coast of the peninsula. If they lost the ability to communicate, maybe the military got alarmed by an unidentified aircraft that doesn't communicate, heading toward KL, with the Petronas towers a possible target? Just a crazy theory though. The strait is so heavily trafficked with boats it seems like somebody would have seen something if that plane went down there, so maybe not.

That pilot showed amazing presence of mind during crisis.

Agreed - even if he couldn't save the whole plane (and it looks like he came close to doing so) he did save the lives of 50 people with his quick thinking.
 

IceAlisa

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The shooting down of the plane idea has occurred to me as well.

I have been hearing that the shutting off of the transponder would have involved deliberate and competent action as there are many layers of redundancy on this plane.
 

mag

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But no plane has been found in those relatively shallow waters so far despite the massive search effort involved, that's what's puzzling.
And if the government is aware of the plane's whereabouts, why continue the widespread search effort involving international military and rescue teams?

I agree, it is not a perfect explanation. The whole situation is very bizarre on top of being very sad :(

I guess we just don't know now far the plane could have flown after radar contact was lost. I assume it is possible that searchers are not even in the right area.
 

MsZem

I see the sea
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18,495
That pilot showed amazing presence of mind during crisis.
Yes, even when he must have realised the plane was doomed because the hijackers were too stupid to understand that just because the plane was capable of carrying that much fuel, it didn't mean it WAS.

He did an impressively good job; it was just such a horrible shame he got caught by the water.
Yes, both pilots did such a good job and Leul Abate (the captain) really handled the whole situation well. Very unfortunate that there was a last minute struggle with the hijackers that made it impossible for him to get to the runway on Grande Comore in time, which necessitated the water landing.

He was interviewed for the Air Crash Investigation episode about that crash and it's very touching to hear him speak about how he was trying to will the plane to make it through the landing. And a lot more people would have survived that crash had they not inflated their life vests while still on the plane. If anyone ever ends up in a water landing: don't do that. You'll drown.
 
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misskarne

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And a lot more people would have survived that crash had they not inflated their life vests while still on the plane. If anyone ever ends up in a water landing: don't do that. You'll drown.

It's unbelievable how many times there's a water ditching on ACI and all these idiots do exactly the same thing.

I think it was that one where I got really annoyed that one of the survivors was an idiot who'd not only inflated his lifejacket, but after being immediately and explicitly told not to inflate the lifejacket inside the plane, then proceeded to inflate his girlfriend's as soon as the steward walked away! I mean, I know it sounds harsh, but this guy basically acted like he knew everything better than the stewards, did all the wrong things, and was one of the survivors.
 

MsZem

I see the sea
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It's unbelievable how many times there's a water ditching on ACI and all these idiots do exactly the same thing.
More people need to watch the show and learn from it ;) I mean, sometimes there's nothing anyone can do, but it is very interesting to realize just what kind of stuff an airplane can survive when pilots are professional and quick-thinking. And if I'm ever on an airplane that experiences fuel starvation, at least I'll know there's a chance. And I won't inflate my life jacket too soon!
 

Jenny

From the Bloc
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21,835
The Malaysian military is acting fishy to say the least, and the idea that they might have shot down the plane themselves is intriguing. Otherwise, if they knew the plane's last known position was over the Straits of Malacca with a western trajectory, why did they allow all that effort and several lost days in the Gulf of Thailand if they knew the whole time the plane wasn't likely anywhere near there?

Or conversely, perhaps they do know more than they are saying and needed to actually divert attention to another region, because they are still searching the Gulf and beyond? And this is where China comes into it - if the plane made it across the Gulf and Vietnam (it's original flight path anyway) and went missing over the South China Sea, now we have an international incident as those waters are highly contested, most aggressively by China. What if the Chinese military is involved? Maybe they've already found the wreckage and want to hold their cards closer to their chest for now. Maybe they are negotiating with the Malaysian military now, or the two governments are fighting over jurisdiction due to location and passenger nationality.

ETA - I wonder if the show ACI being referenced is the same as Mayday with a different name - because I also remember the episode about the crash in the Indian Ocean and the lifevests. Every time we fly and they go through the demo I remind my husband - whatever you do, don't inflate until we're off the plane!
 

MsZem

I see the sea
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18,495
ETA - I wonder if the show ACI being referenced is the same as Mayday with a different name - because I also remember the episode about the crash in the Indian Ocean and the lifevests. Every time we fly and they go through the demo I remind my husband - whatever you do, don't inflate until we're off the plane!
It is. They use different names for it in different countries. It's funny because you never expect so many people to watch it, but whenever I bring it up, people mention watching it themselves!
 

Skittl1321

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17,331
If the plane goes underwater, you become bouyant inside the plane and cannot get out the doors (it is very difficult to swim against a life vest).

It also makes you wider, and reduces mobility, so fewer people can get out the doors quickly, but the first reason is the biggie.
 

Tinami Amori

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20,156
Maybe this is a stoopid question, but why is it bad to inflate the life vests beforehand?

1) Small chance the emergency is avoided (no need to have many passengers with inflated vests, which are useless now for remainder of the flight).
2) Exit Door blocking during evac/lesser mobility in the cabin
3) Bouncing off evacuation slide
4) If cabin floods the pax with inflated vests float up/get stuck in sinking cabin/plane
5) If evac-slide n/a and pax must jump in water, with inflated vests they are immediately subjected to waves/water currents and loose control. Waves can through pax against A/C body, or drift away from life-rafts.
 

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