Malaysia airlines plane may have crashed 239 people on board #5

DNA Solves
DNA Solves
DNA Solves

New Posts

Status
Not open for further replies.
Chilly Willy said:
Quoting myself because I have more information on this - from my husband who is a private pilot.

He says there are no bells and whistles that go off when a transponder is shut down, the plane simply disappears from commercial radar. Military radar could still track the plane because it sends out a signal that bounces back off the aircraft and doesn't depend on a transponder signal. He says military radar could track a bird in the sky at pretty much any altitude, even as low as 500 ft so long as there are no obstructions in the way.

So if the transponder was turned off at any time before the plane entered VN airspace, the plane would just be gone, no warning signal, no alarm bells, nada.
Click to expand...

Thank you. That is what I suspected.

However, can you ask if flying under another planes track would confuse military radar.

Not that we need to know on a public board.

I really think the political landscape is hampering find 239 passengers, and I would like to say, how many employees are there? Can we add that to the amount of people media, please!!!

ALSO, planes need a lot more built in alarms and tracking. I know they cost a lot, appropriate to country purchasing and add ons, but some global something needs to be in place, and indestructible in some way, purchasers need not know. (This sentence defies all I believe in, but face it, personal privacy is a myth anyway. If you turn on your HD tv you are tracked, if you use a cell phone all can be heard and tracked, even with the home phones that are hand held, actually even landlines. If you go to the grocer, you are on film, if you toot, someone can hear it if they so choose.)
 
21merc7 said:
Thank you. That is what I suspected.

However, can you ask if flying under another planes track would confuse military radar.

Not that we need to know on a public board.

I really think the political landscape is hampering find 239 passengers, and I would like to say, how many employees are there? Can we add that to the amount of people media, please!!!

ALSO, planes need a lot more built in alarms and tracking. I know they cost a lot, appropriate to country purchasing and add ons, but some global something needs to be in place, and indestructible in some way, purchasers need not know.
Click to expand...

There are 227 passengers, and 12 crew, so 239 in all.
 
Joe Friday said:
I don't believe switching off the transponder will generate an alarm in the cockpit. Air Traffic Control might get an alarm or alert that they are not receiving information passed to them from the transponder if it suddenly is shut off.

I think what was being refereed to as an alarm in the cockpit is when the auto pilot disengages either from a malfunction or the pilot manually disengaging it.

JMO
Click to expand...

I saw that segment on CNN, taped from a cockpit simulator of a 777. The alarm does go off when you veer off the charted course, but not when one turns off the transponder. But the pilot did say that air traffic control would have an alrm sound when a plane in the air turns off or loses it's transponder connection to them.

The pilot claims that ground control would contact the pilot at that time and ask why transponder was off. I wonder if that was ever done in this case. I doubt it.
 
Chilly Willy said:
Quoting myself because I have more information on this - from my husband who is a private pilot.

He says there are no bells and whistles that go off when a transponder is shut down, the plane simply disappears from commercial radar. Military radar could still track the plane because it sends out a signal that bounces back off the aircraft and doesn't depend on a transponder signal. He says military radar could track a bird in the sky at pretty much any altitude, even as low as 500 ft so long as there are no obstructions in the way.

So if the transponder was turned off at any time before the plane entered VN airspace, the plane would just be gone, no warning signal, no alarm bells, nada.
Click to expand...

The plane would not simply disappear if the transponder is turned off. ATC would not receive information specific to the plane.

Even if the transponder was turned off the primary surveillance radar would still show the plane as a blip on the scree.

The only thing a transponder does when interrogated by radar is send back encoded information such as altitude and maybe identify of the plane.
 
ilovepierre said:
I carry my laptop in my carry-on baggage and it uses a lithium battery.
I don't know if this lithium battery theory holds much water. So many electronics (both in checked and carry-on baggage) contain lithium batteries, and I have never heard of a plane catching fire/exploding because of them.
Click to expand...

Lithium batteries started a fire on a UPS plane that crashed in the UAE in 2010.

"That country's General Civil Aviation Authority found that heat from the fire disabled the crew's oxygen system and that toxic smoke filled the cockpit within three minutes of the first alarm, obscuring the view of controls and terrain."

http://www.usatoday.com/story/news/nation/2013/07/24/ups-crash-dubai-lithium/2582213/
 
Joe Friday said:
The plane would not simply disappear if the transponder is turned off. ATC would not receive information specific to the plane.

Even if the transponder was turned off the primary surveillance radar would still show the plane as a blip on the scree.

The only thing a transponder does when interrogated by radar is send back encoded information such as altitude and maybe identify of the plane.
Click to expand...

What do you think happened?
 
Skittles said:
Lithium batteries started a fire on a UPS plane that crashed in the UAE in 2010.

"That country's General Civil Aviation Authority found that heat from the fire disabled the crew's oxygen system and that toxic smoke filled the cockpit within three minutes of the first alarm, obscuring the view of controls and terrain."

http://www.usatoday.com/story/news/nation/2013/07/24/ups-crash-dubai-lithium/2582213/
Click to expand...

But if there was a fire onboard, could the plane continue to stay airborne for four more hours?

I could see it happen in the case of decompression, where the crew dies and the plane stays on autopilot. But that does not explain the transponders shutting off at different times and the sudden change of direction, does it? I am not clear on that.
 
katydid23 said:
But if there was a fire onboard, could the plane continue to stay airborne for four more hours?

I could see it happen in the case of decompression, where the crew dies and the plane stays on autopilot. But that does not explain the transponders shutting off at different times and the sudden change of direction, does it? I am not clear on that.
Click to expand...

I don't think so either. I think it would implode, via fuel or oxygen. (Thank you for figuring out how to ask the direct question my many posts ramble through.)

Maybe Joe Friday or another person here with aviation knowledge can answer.
 
CNN Wire ‏@CNNWire · 1m
#URGENT - Analysis of electronic/satellite data by US & Malaysia calculates #MH370 likely crashed into Indian ocean on 1 of 2 possible paths

https://twitter.com/CNNWire
 
Joe Friday said:
The plane would not simply disappear if the transponder is turned off. ATC would not receive information specific to the plane.

Even if the transponder was turned off the primary surveillance radar would still show the plane as a blip on the scree.

The only thing a transponder does when interrogated by radar is send back encoded information such as altitude and maybe identify of the plane.
Click to expand...

By disappeared or gone, I meant that the transponder information would be gone - poof - with no alerts or alarms on the ground that would bring out fighter jets as the OP suggested. Primary surveillance radar is a rotating antenna that picks up any aircraft within 60 miles from the terminal where the radar is located. The plane was out of that range.
 
My conspiracy theory-subject to change whichever way wind blows

USA is saying it's over here, Indian Ocean. China is saying over here, closer to flight plan-sat image and seismic activity. Malaysia is playing 20 questions and believe Vietnam has picked up most of it's toys and gone home-when China asked them to recheck satellite image.

Considering that 2 nations *may* have capabilities that can spot a freckle on a gnat's rear, could this all be a diversion. USA and China may have a clue, but do not want to tip hand while sorting it all out.

While it is possible, perhaps probable, it did go down in ocean, I don't think it did at this time.
 
katydid23 said:
But if there was a fire onboard, could the plane continue to stay airborne for four more hours?

I could see it happen in the case of decompression, where the crew dies and the plane stays on autopilot. But that does not explain the transponders shutting off at different times and the sudden change of direction, does it? I am not clear on that.
Click to expand...

I don't think batteries brought the Malaysian plane down. I was just replying to a post that said they'd never hear of lithium batteries causing a fire.

That said, it would tie in to the guy on who reported seeing a plane on fire off S. Vietnam.
 
eileenhawkeye said:
I wonder if they will actually find the plane, or if they will just expect us to buy this, and the story will go away...
Click to expand...

Nothing would surprise me at this point. New info is released every day and then the next day, it's denied. I'd really like to hear some concrete news! Something that sticks for more than a day!
 
Chilly Willy said:
Primary and Secondary Surveillance Radar:
The primary surveillance radar uses a continually rotating antenna mounted on a tower to transmit electromagnetic waves that reflect, or backscatter, from the surface of aircraft up to 60 miles from the radar.

http://www.faa.gov/air_traffic/technology/asr-11/
Click to expand...

Are there not other surveillance means now that can track a gnat?

This is a bit disturbing.

Guess I need to buy a cell phone now.
 
Status
Not open for further replies.

DNASolves

Who is Fairfield County Jane Doe (1993)?

Members online

... and 86 more.
Total: 405 (members: 87, guests: 318)

Online statistics

Members online
87
Guests online
318
Total visitors
405
Totals may include hidden visitors.

Forum statistics

Threads
609,255
Messages
18,251,407
Members
234,585
Latest member
Mocha55
Back
Top