Missing 777

[yelbike]

This time line has a significant variation from the one you are referring to. According to CBS, the significant change in course happened 2 minutes after the sign off. The transponder stop transmitting after the pilot said "all right good night".
From takeoff to final satellite signal - a timeline of Malaysia Airlines Flight 370 - CBS News

Just add to the confusion. I read this morning the "new" flight coordinates were entered two minutes prior to the good night sign off but turn was initiated a short time there after.

So the fire theory only partially fits. Imo

 

[MossRoad]

Had to do some more research to clarify what I thought I had heard. I guess it might be "sort of" flyable with a computer failure.

From:
http://www.davi.ws/avionics/TheAvionicsHandbook_Cap_11.pdf

11.5.2 Mechanical Control
Spoiler panel 4 and 11 and the alternate stabilizer pitch trim system are controlled mechanically rather
than electrically.


From:
question about 777 flight controls [Archive] - PPRuNe Forums

Part of post 1:
I was wondering if the 777 fbw controls allow for manual reversion.

Part of post 2:
The above modes still require electric power. When it is not available, the mechanical backup you refer to is used to control the plane.

It consists of cables from the flight deck to selected spoilers, and the stabilizer. As far as I know, there are no cables to the rudders.

Part of post 8:
The only control surfaces mechanically connected to the flight deck on a 777 are a pair of flight spoilers and the horizotal stab trim system.


Bruce

Yes, I read about 4 & 11. You can't fly that airplane with 4 & 11. Its the equivalent of putting your hand up into the air when riding a motorcycle, or dangling your hand in the water when gliding in a canoe.

 

[MossRoad]

This time line has a significant variation from the one you are referring to. According to CBS, the significant change in course happened 2 minutes after the sign off. The transponder stop transmitting after the pilot said "all right good night".
From takeoff to final satellite signal - a timeline of Malaysia Airlines Flight 370 - CBS News

That's what I was reading as well. The turn happened after the "good night". Anyhow, the post you linked to is plausible and probably best explanation I've heard so far if there was no criminal intent by anyone. Good find. :thumbsup:

 

[aczlan]

Just add to the confusion. I read this morning the "new" flight coordinates were entered two minutes prior to the good night sign off but turn was initiated a short time there after.
So the fire theory only partially fits. Imo

Yep.

That's what I was reading as well. The turn happened after the "good night". Anyhow, the post you linked to is plausible and probably best explanation I've heard so far if there was no criminal intent by anyone. Good find. :thumbsup:

While the turn happened AFTER the 1:19AM "Good night", it was programmed into the Flight Management System BEFORE 1:07AM (the time of the last "Call Home" from the Flight Management System). If they were having an issue and decided at 1:07AM to change course, why didn't they say something on the radio before they signed off with the Malaysian ATC 12+ minutes later (at 1:19AM)?
See the CBS timeline (which I forgot to link in my previous post #256): http://www.cbsnews.com/news/from-ta...l-a-timeline-of-malaysia-airlines-flight-370/

Aaron Z

 

[aczlan]

This time line has a significant variation from the one you are referring to. According to CBS, the significant change in course happened 2 minutes after the sign off. The transponder stop transmitting after the pilot said "all right good night".
From takeoff to final satellite signal - a timeline of Malaysia Airlines Flight 370 - CBS News

I misunderstood the timeline earlier and mixed up the actual turn with when it was programmed into the system. As described in your link (starting at ~0:28), the change in course was programmed into the Flight Management System before 1:07AM, well before the 1:19AM signoff with the Malaysian ATC.

Aaron Z

 

[MossRoad]

It may have just been a good habit to put other coordinates in as you go along in case something happens. I don't know. When I drive in South Bend at night, I always look for escape routes at stop lights, curbs I can jump, trees I can slip through, etc... in case of car jackings. (I know that's sad, but that's life in this hades-hole :laughing. And I have heard and read that it was programmed into the computer ahead of time, but I was never clear how anyone knows the time it was programmed in. Was that transmitted to the airline before communications died?

 

[MossRoad]

Ahh, the flight management system. Thanks.

 

[chopped]

http://news.yahoo.com/cnn-black-hole-malaysia-flight-370-theories-144151381.html

 

[k0ua]

The cartoon pretty sums it up. I have never heard so many "experts" that don't even seem to know how to answer the questions supposedly in their field, let alone any questions that drifted out of their scope. Where do they get these people? Just grab mooks off of the street?

 

[MossRoad]

Don't disparage the mooks. :laughing: