RSS iconTwitter iconFacebook icon

The Trek BBS title image

The Trek BBS statistics

Threads: 140,362
Posts: 5,446,262
Members: 24,968
Currently online: 459
Newest member: LaciFalor

TrekToday headlines

Kruge Bobble Head
By: T'Bonz on Oct 30

Two Trek Actors In Green Room
By: T'Bonz on Oct 30

Trek UglyDolls First Look
By: T'Bonz on Oct 29

New Star Trek Select Action Figure
By: T'Bonz on Oct 29

Trek Actors In Elsa & Fred
By: T'Bonz on Oct 29

The Red Shirt Diaries #9
By: T'Bonz on Oct 28

Greenwood Cast In Truth
By: T'Bonz on Oct 28

Cumberbatch In Talks For Strange
By: T'Bonz on Oct 28

Two New Trek Bobble Heads
By: T'Bonz on Oct 27

Meaney On Playing Historical Figure Durant
By: T'Bonz on Oct 27


Welcome! The Trek BBS is the number one place to chat about Star Trek with like-minded fans. Please login to see our full range of forums as well as the ability to send and receive private messages, track your favourite topics and of course join in the discussions.

If you are a new visitor, join us for free. If you are an existing member please login below. Note: for members who joined under our old messageboard system, please login with your display name not your login name.


Go Back   The Trek BBS > Lounges & General Chat > Miscellaneous

Miscellaneous Discussion of non-Trek topics.

Reply
 
Thread Tools
Old March 9 2014, 01:05 AM   #16
Brown-Eyed Ghoul
Vice Admiral
 
Brown-Eyed Ghoul's Avatar
 
Location: scotpens
Re: Malaysian airliner feared lost..

Captrek wrote: View Post
After a thorough search of my home, I can confidently report that the missing airliner is definitely not here.

I've done my part.
I don't mind sick humor, but I find this to be in poor taste.
__________________
“All the universe or nothingness. Which shall it be, Passworthy? Which shall it be?”
Brown-Eyed Ghoul is offline   Reply With Quote
Old March 9 2014, 03:37 AM   #17
EmoBorg
Fleet Captain
 
EmoBorg's Avatar
 
Location: in the 10 dimensions of reality
Re: Malaysian airliner feared lost..

More details about the stolen passports.

http://sg.news.yahoo.com/authorities...152800254.html



MH 370 Passenger list as provided by Malaysia Airlines

http://sg.news.yahoo.com/mh-370-pass...151737575.html
__________________
Si vis pacem, para bellum
EmoBorg is offline   Reply With Quote
Old March 9 2014, 08:29 AM   #18
Nociod
Fleet Captain
 
Location: Norway
Re: Malaysian airliner feared lost..

The Malaysias transport and defense minister Hishamuddin Hussein, has reported that four passengers used fake IDs, and they all booked tickets through China Southern Airways. (However this doesn't prove it was terror).

The FBI is now assisting in the investigation, and an American destroyer, USS Pinckney is sent to help with the search.

(Only have Norwegian URLS)
http://www.tv2.no/2014/03/09/nyheter...8#.UxwW3-IpL3A
http://www.vg.no/nyheter/utenriks/ki...artid=10145835
http://www.vg.no/nyheter/utenriks/ar...artid=10145895
Nociod is offline   Reply With Quote
Old March 9 2014, 12:01 PM   #19
EmoBorg
Fleet Captain
 
EmoBorg's Avatar
 
Location: in the 10 dimensions of reality
Re: Malaysian airliner feared lost..

Interesting developments being reported by the LA times. http://touch.latimes.com/#section/-1.../p2p-79568792/
__________________
Si vis pacem, para bellum
EmoBorg is offline   Reply With Quote
Old March 9 2014, 03:50 PM   #20
farmkid
Commodore
 
Re: Malaysian airliner feared lost..

There is a report this morning that radar indicates the plane may have turned around just before it disappeared.

link

That article also addresses the stolen passports. At first I thought that was a good sign this was a terrorist act, but this article points out that with the number of stolen and lost passports in the database, any flight of that size in Asia will likely have a couple of passengers using stolen documents.
__________________
Computers are like the God of the Old Testament: lots of rules and no mercy.
farmkid is offline   Reply With Quote
Old March 9 2014, 09:45 PM   #21
publiusr
Commodore
 
Re: Malaysian airliner feared lost..

Still, it might be another case of a "dry run..."
publiusr is offline   Reply With Quote
Old March 10 2014, 08:15 PM   #22
Trek or Treat!
Rear Admiral
 
Trek or Treat!'s Avatar
 
Location: going batty
Re: Malaysian airliner feared lost..

OK, I'm confused. News reports are saying that radar indicated the plane may have turned back before disappearing.

Is radar the only clue we have as to the location of the plane? Don’t commercial airliners have transponders in constant contact with air control? Taxi companies have GPS devices that tell them the location of every car in the fleet in real time; I'd expect airlines to do the same with their planes.
Trek or Treat! is offline   Reply With Quote
Old March 10 2014, 10:44 PM   #23
Marc
Fleet Admiral
 
Location: An Aussie in Canukistan
Send a message via ICQ to Marc
Re: Malaysian airliner feared lost..

Captrek wrote: View Post
OK, I'm confused. News reports are saying that radar indicated the plane may have turned back before disappearing.

Is radar the only clue we have as to the location of the plane? Don’t commercial airliners have transponders in constant contact with air control? Taxi companies have GPS devices that tell them the location of every car in the fleet in real time; I'd expect airlines to do the same with their planes.
For long haul flights once at cruise altitude and over water contact with ATC is only as necessary (for example adviser that you're leaving a particular airspace or if there's an action that needs to be taken or position reports).

And yes they have a transpoder - that's what identifies the aircraft to the radar. If the trasnpoder goes off the air, yes the radar will know something is there but not which aircraft it is.

The other issue is that radar as a limited range and once outside that range the aircraft can't be tracked (not an issue in this instance as they were only just off shore but was I believe the case with the Air France A330 that went down a couple of years back)
__________________
Gentlemen you can't fight in here - this is the war room.

Pres. Merkin P. Muffly
Marc is offline   Reply With Quote
Old March 10 2014, 11:09 PM   #24
Trek or Treat!
Rear Admiral
 
Trek or Treat!'s Avatar
 
Location: going batty
Re: Malaysian airliner feared lost..

Marc wrote: View Post
Captrek wrote: View Post
OK, I'm confused. News reports are saying that radar indicated the plane may have turned back before disappearing.

Is radar the only clue we have as to the location of the plane? Don’t commercial airliners have transponders in constant contact with air control? Taxi companies have GPS devices that tell them the location of every car in the fleet in real time; I'd expect airlines to do the same with their planes.
For long haul flights once at cruise altitude and over water contact with ATC is only as necessary (for example adviser that you're leaving a particular airspace or if there's an action that needs to be taken or position reports).

And yes they have a transpoder - that's what identifies the aircraft to the radar. If the trasnpoder goes off the air, yes the radar will know something is there but not which aircraft it is.
Why is the transponder not updating its position constantly? Seems like a common sense precaution.

Also, modern airliners have telephones and internet service. Doesn't somebody have to be keeping tabs on their position to maintain that network access?
Trek or Treat! is offline   Reply With Quote
Old March 10 2014, 11:29 PM   #25
WalkerBait
Trekker4747
 
WalkerBait's Avatar
 
Location: Kansas City
Re: Malaysian airliner feared lost..

The transponder sends out a signal on a specific channel to let ATC and other agencies track the plane. Those places assign the plane the transponder number and fill in the details. Change the transponder code and the tracking equipment on the ground won't know the details of that new code. Further, like any devices on a plane, the transponder can be turned off or damaged.

As for GPS and other tracking devices, also able to be damaged or turned off.

As for airphones they're send only, they don't have numbers to call or recieve, Also a rarity these days, doubt they'd be on a new plane.

I've heard stories that family members have tried calling the phones of loved ones and the calls are connecting, just not being answered. Suggesting personal phones in the plane are still active. If they were off, dead, or destroyed the calls wouldn't connect and go either voicemail or an error message.
__________________
Just because it's futuristic doesn't mean it's practical.
WalkerBait is offline   Reply With Quote
Old March 10 2014, 11:41 PM   #26
Marc
Fleet Admiral
 
Location: An Aussie in Canukistan
Send a message via ICQ to Marc
Re: Malaysian airliner feared lost..

Captrek wrote: View Post
Marc wrote: View Post
Captrek wrote: View Post
OK, I'm confused. News reports are saying that radar indicated the plane may have turned back before disappearing.

Is radar the only clue we have as to the location of the plane? Don’t commercial airliners have transponders in constant contact with air control? Taxi companies have GPS devices that tell them the location of every car in the fleet in real time; I'd expect airlines to do the same with their planes.
For long haul flights once at cruise altitude and over water contact with ATC is only as necessary (for example adviser that you're leaving a particular airspace or if there's an action that needs to be taken or position reports).

And yes they have a transpoder - that's what identifies the aircraft to the radar. If the trasnpoder goes off the air, yes the radar will know something is there but not which aircraft it is.
Why is the transponder not updating its position constantly? Seems like a common sense precaution.

Also, modern airliners have telephones and internet service. Doesn't somebody have to be keeping tabs on their position to maintain that network access?
Because transponders don't work that way. The only worked when the aircraft is probed by the radar.
__________________
Gentlemen you can't fight in here - this is the war room.

Pres. Merkin P. Muffly
Marc is offline   Reply With Quote
Old March 11 2014, 01:23 AM   #27
Trek or Treat!
Rear Admiral
 
Trek or Treat!'s Avatar
 
Location: going batty
Re: Malaysian airliner feared lost..

Trekker4747 wrote: View Post
I've heard stories that family members have tried calling the phones of loved ones and the calls are connecting, just not being answered. Suggesting personal phones in the plane are still active. If they were off, dead, or destroyed the calls wouldn't connect and go either voicemail or an error message.
If the phones were connecting, they'd be located.
Trek or Treat! is offline   Reply With Quote
Old March 11 2014, 01:33 AM   #28
RobertVA
Fleet Captain
 
RobertVA's Avatar
 
Location: Virginia USA
Re: Malaysian airliner feared lost..

Radar is line of sight, so unless there's a tracking station at sea (an island, ship or one of the tracking planes like those deployed from aircraft carriers) the plane disappears from radar for any period it's beyond the distance where it would be able to see the radar site in clear weather.

The transponder is designed to identify the aircraft on radar screens. The pilots dial in a four digit code assigned by air traffic control. As each digit is limited to the range of zero to seven the system was apparently designed for compatibility with the octal technology available in the mid twentieth century. Since radar is better for determining direction and range, the transponder is connected to the aircraft's barometric altimeter. The transponder sends the ID number and altitude when it detects the signal from the radar site so the computer can match the ID and altitude to the radar reflection.

Some airlines maintain communication between computers monitoring the plane's mechanical operation and the airline's maintenance division. Bandwidth limitations associated with long range communications might have a role in restricting the frequency of those reports. Those systems might be manually or automatically shut down in favor of other functions in an emergency (if they aren't already off line from whatever caused the emergency).
RobertVA is offline   Reply With Quote
Old March 11 2014, 01:51 AM   #29
WalkerBait
Trekker4747
 
WalkerBait's Avatar
 
Location: Kansas City
Re: Malaysian airliner feared lost..

Captrek wrote: View Post
Trekker4747 wrote: View Post
I've heard stories that family members have tried calling the phones of loved ones and the calls are connecting, just not being answered. Suggesting personal phones in the plane are still active. If they were off, dead, or destroyed the calls wouldn't connect and go either voicemail or an error message.
If the phones were connecting, they'd be located.
Which is what has the families upset wondering why the airline/authorities aren't doing anything. Though, supposedly, they're looking into that avenue. I don't think those in the investigation are being 100% open.
__________________
Just because it's futuristic doesn't mean it's practical.
WalkerBait is offline   Reply With Quote
Old March 11 2014, 02:00 AM   #30
Trek or Treat!
Rear Admiral
 
Trek or Treat!'s Avatar
 
Location: going batty
Re: Malaysian airliner feared lost..

Malaysia Airlines Flight MH370: Why is it taking so long to find?

Likely scenario, if I'm understanding this right: catastrophic systems failure causes loss of radio, pressure, and navigation. Pilots, unable to communicate, turn the plane back toward Malaysia, as accurately as they can under the circumstances, which may include only a few seconds of useful consciousness. Plane continues to fly for quite some distance with no communications and nobody conscious at the wheel. Not sure of its exact heading, the search area could be enormous.

Alternatively, they were grabbed by Martians and are currently dining with Amelia Earhart. Or Amelia Pond. Or both.
Trek or Treat! is offline   Reply With Quote
Reply

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT +1. The time now is 02:39 PM.

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
FireFox 2+ or Internet Explorer 7+ highly recommended.