Malaysia Airlines loses contact with B777-200 / MH370 enroute from KUL to PEK | Page 9 | FerrariChat

Malaysia Airlines loses contact with B777-200 / MH370 enroute from KUL to PEK

Discussion in 'Aviation Chat' started by Peloton25, Mar 7, 2014.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. finnerty

    finnerty F1 World Champ

    Joined:
    May 18, 2004
    Messages:
    10,406
    SBIRS huh ?!?! ;)

    I would love it if SBIRS is involved in helping solve this incident :):)
     
  2. ronzalfa

    ronzalfa Karting

    Joined:
    Sep 25, 2004
    Messages:
    152
    Location:
    SW Washington
    Full Name:
    Ron Deaver
    One more wacko conspiracy set....Is it possible that the signals attributed to the 777 were in fact emitted from a second plane in very close proximity to the MAS plane used as a diversion to allow the 777 time to fly off undectected to a planned destination? This would also be known as the Vegas magician " l shall now make an airliner vanish" theory..would require some ground crew participation.
    Also, at what point was the 777 declared missing and by what official entity? A point not to be missed is the lack of effective air defense systems by multiple governments, eh?
     
  3. finnerty

    finnerty F1 World Champ

    Joined:
    May 18, 2004
    Messages:
    10,406
    That's a very creative idea, but not possible. At least with regard to the ACARS data and the engine data transmitted, it is unique to each individual aircraft and engine via embedded serial / ID information, so another aircraft could not transmit a duplicated signal. Not only would the ghosting aircraft have to be another 777......it would also have to be one manipulated to emit counterfeit signal IDs both from Boeing (the serial ID of the aircraft) and Rolls Royce (the serial IDs of both engines) ---- and only Boeing and Rolls Royce would be capable of doing that. So now you would have to have both those manufacturers involved in the "conspiracy" :).
     
    Last edited: Mar 13, 2014
  4. alexD

    alexD F1 Rookie

    Joined:
    Oct 1, 2006
    Messages:
    4,670
    Location:
    sunnyvale
    Full Name:
    alex d
    I like to dream:)

    Sent from my Nexus 7 using Tapatalk 2
     
  5. eric4

    eric4 Rookie

    Joined:
    Mar 4, 2013
    Messages:
    8
    I don't understand why a commercial airliner would have or need the capability of shutting off it's transponders...Why would this ever be needed??
     
  6. Peloton25

    Peloton25 F1 Veteran

    Joined:
    Jan 24, 2004
    Messages:
    7,646
    Location:
    California, USA
    Full Name:
    Erik
  7. solofast

    solofast Formula 3

    Joined:
    Oct 8, 2007
    Messages:
    1,773
    Location:
    Indianapolis
    Every transponder that I have ever seen has a "Standby" position on the switch which allows them to be powered up, but not transmitting. When you are taxiing on the ground or powering up the airplane for maintenance, you don't want the transponder on. If the transponder were on all the time you would need to set it to something before you turned on the master switches or it will start broadcasting a code. If you haven't contacted ground control yet what code do you put in?

    Typical procedure is to set the transponder to standby, power up the airplane, go through the checklists, get your clearance and transponder code, and then put in the code and after startup turn the transponder to the on position with the proper code already set in. That way you always have the right transponder code whenever you are broadcasting, and that avoids confusion with ATC and ground control.

    In addition, you need to have a breaker for every electrical circuit so that if a piece of wiring to that box gets shorted you can shut it down.

    So there are at least two ways to shut down the transponder and yes they are both necessary.
     
  8. eric4

    eric4 Rookie

    Joined:
    Mar 4, 2013
    Messages:
    8
    Thanks for the reply, makes perfect sense! That's the reason why I always come here for updates, information! Thanks
     
  9. Tcar

    Tcar F1 Rookie

    Joined:
    Jan 2, 2010
    Messages:
    4,739
    Location:
    Denver, Albuquerque


    Does a 777 have a large enough heat signature for SBIRS to follow it?
     
  10. donv

    donv Two Time F1 World Champ Owner Rossa Subscribed

    Joined:
    Jan 5, 2002
    Messages:
    26,107
    Location:
    Portland, Oregon
    Full Name:
    Don
    I've also had transponders fail in such a way that they were sending out inaccurate data.

    Most jet airplanes have two transponders, but you don't use both at the same time. Instead, one is in standby while you use the other one. If you have a problem with the one you're using, you can switch to the number 2.

     
  11. gurslo

    gurslo Formula 3

    Joined:
    Feb 25, 2008
    Messages:
    1,524
    Location:
    Connecticut
    Full Name:
    Peter
    How do you know its data is inaccurate? Are you contacted by a traffic controller inquiring about the related info?
     
  12. KKSBA

    KKSBA F1 World Champ Rossa Subscribed

    Joined:
    Oct 31, 2003
    Messages:
    15,299
    Location:
    SBarbara-La Jolla CA
    Full Name:
    KKSBA
    Yes. ATC will ask you to recycle the transponder because they lost your id. If it is still sending out none or erroneous information like bad altitude data, you switch to your secondary.
     
  13. norcal2

    norcal2 F1 Veteran

    Joined:
    Sep 21, 2007
    Messages:
    6,815
    Location:
    Sierra Nevada Triangle
    multispectral imagery/IR etc has been around for a long time, there are many factors that effect whether or not target recognition, video/still imagery, etc can be acquired...
    Suffice to say what isnt said is more important...
     
  14. garybobileff

    garybobileff Formula 3 Sponsor

    Joined:
    Feb 5, 2004
    Messages:
    1,180
    Location:
    San Diego CA
    Full Name:
    Gary
    Depending on the Manufacture of the transponder, many will have a digital display showing altitude and squawk code.
    Gary Bobileff
     
  15. finnerty

    finnerty F1 World Champ

    Joined:
    May 18, 2004
    Messages:
    10,406
    I worked on SBIRS.

    It was (and is ongoing) a huge project. Many detailed aspects of its capabilities are still classified, and some of the system capability I do not know simply because it was not related to the parts that I was involved with ---- either way, I cannot give out any information along those lines.
     
  16. alexD

    alexD F1 Rookie

    Joined:
    Oct 1, 2006
    Messages:
    4,670
    Location:
    sunnyvale
    Full Name:
    alex d
    Were you at LHM in Sunnyvale?
     
  17. alexD

    alexD F1 Rookie

    Joined:
    Oct 1, 2006
    Messages:
    4,670
    Location:
    sunnyvale
    Full Name:
    alex d
    Sounds like the Malaysian military may have had more radar data than was initially mentioned as well.

    CNN Exclusive: Analysis shows Flight 370 crashed in Indian Ocean - CNN.com
     
  18. finnerty

    finnerty F1 World Champ

    Joined:
    May 18, 2004
    Messages:
    10,406
    No --- BATC in Colorado. We were one of the sub-contractors under NGST's phase of the program.

    Yourself --- are you an LHM guy ?
     
  19. alexD

    alexD F1 Rookie

    Joined:
    Oct 1, 2006
    Messages:
    4,670
    Location:
    sunnyvale
    Full Name:
    alex d
    Yeah, I worked for IS&GS in San Jose. We were pretty closely tied to the goings-on at Sunnyvale...ground stations.
     
  20. thecarreaper

    thecarreaper F1 World Champ Silver Subscribed

    Joined:
    Sep 30, 2003
    Messages:
    18,061
    Location:
    Savannah
    There is the possibility they are being given info to present as their own, to quell the situation some. The intelligence community has really come together this, but none of them want to be anywhere in the spotlight, as that is not how they work and live.

    The new info on the news and the thread in silver spoke of a high altitude maneuver above the normal max ceiling for a 777. Sad to say but it sure reads like a purposeful depressurization maneuver to kill the crew and passengers, as someone in silver alluded to as well.

    So big questions: Is the aircraft intact, somewhere?

    Is the aircraft now a threat to the global community?

    Tensions and security will remain high because of this.
     
  21. kylec

    kylec F1 Rookie Silver Subscribed

    Joined:
    Jun 9, 2005
    Messages:
    3,670
    Location:
    Orlando
    Is there an avionics bay under the cockpit of the 777?
     
  22. Bob Parks

    Bob Parks F1 Veteran Consultant

    Joined:
    Nov 29, 2003
    Messages:
    8,017
    Location:
    Shoreline,Washington
    Full Name:
    Robert Parks
    Yes.
     
  23. kylec

    kylec F1 Rookie Silver Subscribed

    Joined:
    Jun 9, 2005
    Messages:
    3,670
    Location:
    Orlando
    Is it possible for a stowaway to fit in there? Two people?
     
  24. Tcar

    Tcar F1 Rookie

    Joined:
    Jan 2, 2010
    Messages:
    4,739
    Location:
    Denver, Albuquerque
    Is it pressureized?
     
  25. gurslo

    gurslo Formula 3

    Joined:
    Feb 25, 2008
    Messages:
    1,524
    Location:
    Connecticut
    Full Name:
    Peter
    I'm I interpreting this as a pilot suicide that succumbs the entire population on board?
    What was this high altitude maneuver? Decompression some how?
    If the plane was controlled afterwards there must be a way to survive the maneuver right? If I understand correctly the black boxes would have transmitted a signal if they were jarred around, so the black box signal is either out of range (under water , to far away) or never crashed.
     

Share This Page