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Malaysian airlines has lost a 777

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The black box should work, but you have to practically stumble on it to find it. Now the possible search area is the size of the the continental US. Good luck.
Better?
 
Dari said:
Why is there no talk about the black box? Shouldn't it be findable no matter what for 30 days?
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I think it's more like 7 days. They also have to get close enough to it. ex: it's it's own transmitter, it's not actually talking with a satellite. At least I think that's how it works. In most crashes the plane is found before the black box. This is a unique (somewhat) case since the whole plane can't be found and it's location is completely unknown.

Even 9/11, it took a while to find the box, but they knew where it was, generally speaking.
 
skyking said:
The black box should work, but you have to practically stumble on it to find it. Now the possible search area is the size of the the continental US. Good luck.
Better?
Click to expand...

Red Squirrel said:
I think it's more like 7 days. They also have to get close enough to it. ex: it's it's own transmitter, it's not actually talking with a satellite. At least I think that's how it works. In most crashes the plane is found before the black box. This is a unique (somewhat) case since the whole plane can't be found and it's location is completely unknown.

Even 9/11, it took a while to find the box, but they knew where it was, generally speaking.
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Thanks, I had no idea it was so difficult to find. Also, I thought it was good for 30 days, not 7. You'd think, in this day and age, the black box would be upgraded so that it can communicate with GPS and some other established navigational system.
 
Dari said:
Thanks, I had no idea it was so difficult to find. Also, I thought it was good for 30 days, not 7. You'd think, in this day and age, the black box would be upgraded so that it can communicate with GPS and some other established navigational system.
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They have other systems for that which were disabled for one reason or another (be it intentionally or mechanical).
 
Dari said:
Thanks, I had no idea it was so difficult to find. Also, I thought it was good for 30 days, not 7. You'd think, in this day and age, the black box would be upgraded so that it can communicate with GPS and some other established navigational system.
Click to expand...

According to a "timer" website I was reading from linked in this thread somewhere. The box had a 27 day limit. And the timer was at 21 days, and that was iirc, 3 days ago.
 
humm people in the Maldives calim to see a low flying jet at round 6:30am that had marking matching Malaysia airlines.

http://www.firstpost.com/world/live-maldives-island-residents-see-low-flying-jumbo-jet-1424627.html

The aircraft was travelling at a very low attitude making tremendous noise from "North to South-East, towards the Southern tip of the Maldives – Addu".

"I've never seen a jet flying so low over our island before. We've seen seaplanes, but I'm sure that this was not one of those. I could even make out the doors on the plane clearly," said an eyewitness to Haveeruonline.

"It's not just me either, several other residents have reported seeing the exact same thing. Some people got out of their houses to see what was causing the tremendous noise too," the witness said.

Read more at: http://www.firstpost.com/world/live...jumbo-jet-1424627.html?utm_source=ref_article
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and Thailand waited 10 days to cough up radar data that may be the jet?? wtf
 
Dari said:
Thanks, I had no idea it was so difficult to find. Also, I thought it was good for 30 days, not 7. You'd think, in this day and age, the black box would be upgraded so that it can communicate with GPS and some other established navigational system.
Click to expand...

Obviously there's a ton of different answers, but I heard it was good for 30 days as well. I also saw that the signal from the black box is only detectable if you're within a 15 NM range of it. I may have read that in this thread. I can't even imagine how long it would take if you had to split the entire US into 15x15 grids and search it.........
 
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02ranger said:
Obviously there's a ton of different answers, but I heard it was good for 30 days as well. I also saw that the signal from the black box is only detectable if you're within a 15 nm range of it. I may have read that in this thread. I can't even imagine how long it would take if you had to split the entire US into 15x15 grids and search it.........
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The sad part is 'average folks' are throwing up so much misinformation and they truly believe it.

The scary thing to me is why would you ever need a transponder to turn off on a commercial airliner. I can understand Air Force One, but I would think that would be a specialized transponder to begin with.

Also most don't realize the value just trying for payouts on the average flyer on an aircraft like this also flying internationally (that said most don't realize this 777-300 requires special airports as well).

Just the pure looting the luggage and people would be very profitable.

There are a lot of options in this.
 
Has it been mentioned that if the black box is at the bottom of the sea, its signal will not penetrate the seawater in any case.
 
alkemyst said:
The sad part is 'average folks' are throwing up so much misinformation and they truly believe it.

The scary thing to me is why would you ever need a transponder to turn off on a commercial airliner. I can understand Air Force One, but I would think that would be a specialized transponder to begin with.

Also most don't realize the value just trying for payouts on the average flyer on an aircraft like this also flying internationally (that said most don't realize this 777-300 requires special airports as well).

Just the pure looting the luggage and people would be very profitable.

There are a lot of options in this.
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I think I read that the transponder has to be switched off when the plane is on the ground at the airport, I guess so they don't have a ton of "irrelevant" planes showing on radar at ATC. I'm honestly a little surprised there isn't more equipment on a plane to help keep track of it, although I'm not sure what that would be. I was also very surprised when I read about the limitations on the black box.
 
crashtech said:
Has it been mentioned that if the black box is at the bottom of the sea, its signal will not penetrate the seawater in any case.
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N/M, reading disappoint's answer cleared that up. I knew that the 15 NM is in any direction, so if it's >15 NM deep then obviously the signal wouldn't reach the surface. I just haven't checked to see how deep the indian ocean is........

Edit: Just checked, at it's deepest point Google says the Indian Ocean is 4.34 NM deep. Is there something about the water that impedes the signal?
 
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02ranger said:
Obviously there's a ton of different answers, but I heard it was good for 30 days as well. I also saw that the signal from the black box is only detectable if you're within a 15 nm range of it. I may have read that in this thread. I can't even imagine how long it would take if you had to split the entire US into 15x15 grids and search it.........
Click to expand...

15 nanometers, you have to get it under a microscope to get within range.

nautical miles: NM or nmi
nanometers: nm
 
02ranger said:
N/M, reading disappoint's answer cleared that up. I knew that the 15 nm is in any direction, so if it's >15 nm deep then obviously the signal wouldn't reach the surface. I just haven't checked to see how deep the indian ocean is........

Edit: Just checked, at it's deepest point Google says the Indian Ocean is 4.34 nm deep. Is there something about the water that impedes the signal?
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Yes.
 
disappoint said:
15 nanometers, you have to get it under a microscope to get within range.

nautical miles: NM or nmi
nanometers: nm
Click to expand...

Whoops, my bad. I have never seen nautical miles' notation until yesterday, and he had it as nm.

disappoint said:
Yes.
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Looks like I'm off to google again................

Edit: OK, I just educated myself a little bit, and I have this overwhelming sense it's something I should've learned in middle school, maybe earlier. Radio waves don't travel well through water, salt water even worse, so even going 4 NM would be impressive. I did read on Forbes (IDK how reliabe this is) that the black box emits a sonar signal as well. Maybe that's the 15 NM range I read about earlier?
 
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OutHouse said:
many reasons it can be turned off one of them is because it would be total chaos for atc while planes are on the ground.
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not true. the transponder can be turned off the same reason why you can shut down an engine in flight - something like a fire.

ATC requires that pilots keep their transponders on while on the ground - equipment like ASDE-X functions off the aircraft's transponder and helps ground controllers.

Kaido said:
Big update:
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Yeah, thats huge. It pretty much rules out fire or mechanical issues and points squarely at the plane being hijacked.
 
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