Malaysian 777 missing
#721
Gets Weekends Off
Joined APC: Feb 2013
Position: CA
Posts: 1,225
Did this flight use CPDLC/ADS, FANS 1/A? Did the flight's FMC downlink a changed route via ACAARS (and if so why don't they look at the last waypoint in that downlink)? If CPDLC was used, there is the ability to uplink a new route, and if the crew accepted and executed an upload the aircraft would fly that route (on AP).
Just curious how sure they are of a pilot installed/uplinked a FMC flight plan vs. a heading select course on AP.
PS. To the media cursing this thread for info, please stop embarrassing yourselves.
#722
On this point, I disagree. Once data has been overwritten once, it becomes very difficult to recover; essentially you'd just be looking for a weak "shadow" signal of the previous magnetic bit.
Once data has been overwritten 4 or more times, it is absolutely impossible to figure out what was there before. And most off-the-shelf data wiping tools will do multiple overwrites.
If there is any source/evidence that a government agency can recover data that has been specifically wiped, I'm willing to listen. But short of that evidence, the idea goes against everything i know about hardware, software, and physics.
Once data has been overwritten 4 or more times, it is absolutely impossible to figure out what was there before. And most off-the-shelf data wiping tools will do multiple overwrites.
If there is any source/evidence that a government agency can recover data that has been specifically wiped, I'm willing to listen. But short of that evidence, the idea goes against everything i know about hardware, software, and physics.
#723
I'm thinking a lot of this info is coming off the ADS-B. It looks like among the info it sends is a sort of Position report including next waypoints. If you had reprogrammed your 2nd and 3rd next fixes it would appear here. And it sounds like it was there 12 mins prior to the final ATC transmission.
#724
On this point, I disagree. Once data has been overwritten once, it becomes very difficult to recover; essentially you'd just be looking for a weak "shadow" signal of the previous magnetic bit.
Once data has been overwritten 4 or more times, it is absolutely impossible to figure out what was there before. And most off-the-shelf data wiping tools will do multiple overwrites.
If there is any source/evidence that a government agency can recover data that has been specifically wiped, I'm willing to listen. But short of that evidence, the idea goes against everything i know about hardware, software, and physics.
Once data has been overwritten 4 or more times, it is absolutely impossible to figure out what was there before. And most off-the-shelf data wiping tools will do multiple overwrites.
If there is any source/evidence that a government agency can recover data that has been specifically wiped, I'm willing to listen. But short of that evidence, the idea goes against everything i know about hardware, software, and physics.
And Edward Snowden has said that properly implemented "encryption works".
The folks who seem to think that the NSA has divine powers don't know anything about computers or forensics.
The way law enforcement "breaks encryption" is to depend on keyloggers or sticky notes with passwords on them. They "recover data" when people hit the "delete" key, not when they deliberately overwrite data.
I, too, am willing to listen to evidence to the contrary.
I haven't seen any.
#725
#727
Yep. I can see it now. Feds mandate GoPros on every flight deck with auto upload to YouTube. That will surely solve any future dilemmas of this nature.
A possible grand idea hatched from a hoot that was forced to resign suddenly becuase he was so inept and despised by just about everyone but possibly Vlad Putin.
A possible grand idea hatched from a hoot that was forced to resign suddenly becuase he was so inept and despised by just about everyone but possibly Vlad Putin.
#728
Gets Weekends Off
Joined APC: Dec 2007
Position: retired
Posts: 992
Looks like we are getting conflicting info, jungle seems to think it is speculation, and there is no way of knowing for certain. (see above) I also just asked an FMS design buddy of mine about this and he is not aware of this sort of ACARS messaging. Said he would to check on it. Speaking of reporters, just now a guy on the news that was being interviewed essentially said it was bunk that we know for certain the FMS was reprogrammed. Newscaster shut him down fast, (was ruining his whole news drama)
#729
On Reserve
Joined APC: Mar 2014
Posts: 21
Nope. It's a non-zero probability, but is virtually zero. All the fire speculation is driving me nuts... we try to get the plane on the ground within 15 minutes with a fire, and it would be even less likely for it to happen exactly at an FIR crossing. This thing kept on going for another 6 hours. There is virtually no logical way that happened with a fire.
That has been my thought re any fire theories...possible, not plausible.
#730
Are we there yet??!!
Joined APC: Apr 2006
Posts: 2,010
FMC route data can get sent to ATC through a mode S transponder.
Those pprune folks talk about it here
ADS and CPDLC - PPRuNe Forums
I've always kept any unofficial waypoints out of Legs 1 just for that reason. I've been told that they can actually see what we have in RTE 2 also
Those pprune folks talk about it here
ADS and CPDLC - PPRuNe Forums
I've always kept any unofficial waypoints out of Legs 1 just for that reason. I've been told that they can actually see what we have in RTE 2 also
At my previous company, we used to use RTE2 to put in ETPs and ETOPS pts. So, I am pretty sure those cannot be seen.
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bgmann
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01-30-2008 11:26 AM