An Antonov An-148 operated by Saratov Airlines and carrying 65 passengers and six crew went missing shortly after take-off from Moscow’s Domodedovo airport, an emergency services source told Russian media.
Dahlgardo wrote:RA-61704
godsbeloved wrote:Are the fluctuations in airspeed as seen in FR24 normal?
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conaly wrote:1TV Rus just showed some pictures, apparently only smaller pieces were found and reports say, there have been falling burning parts in the sky. So it seems the airplane blew up mid air. I'll post a source, once I get one on the net.
edu2703 wrote:-3400 fpm before signal loss
edu2703 wrote:-3400 fpm before signal loss
Solidus wrote:Some sources say that is collision with helicopter, but no confirmation yet
zeke wrote:edu2703 wrote:-3400 fpm before signal loss
The speed altitude readout to me may suggest airframe icing.
sudenmorsian wrote:According to the BBC, there unfortunately does not seem to be any survivors.
B777LRF wrote:Judging from the speed/altitude graph in reply 10, the speed dropped at 2000ft and it stopped climbing for a brief while (ca 11:22:30).Weather indicates broken/overcast at 2600ft with a chance of CB. The aircraft reached a height of around 6000ft. There's little to no chance of a helicopter flying above 2000ft in those conditions, making the chance of an in-flight collision with such an object at an altitude of around 6000ft extremely small.
Dahlgardo wrote:conaly wrote:1TV Rus just showed some pictures, apparently only smaller pieces were found and reports say, there have been falling burning parts in the sky. So it seems the airplane blew up mid air. I'll post a source, once I get one on the net.
If the aircraft blows up mid-air you would likely find much larger pieces, especially wing and tail sections as the would fall a lot slower.
If there's only small pieces found on the ground, it would suggest the aircraft hit the ground intact at high speed.
These eyewitness accounts are notoriously inaccurate.
The weather also looks foggy with low clouds.
Nicoeddf wrote:As stated, my money is on icing as well. -10 to -15 with up and down drafts in CBs sounds like the perfect environment.
Anybody familiar with anti-icing systems on the AN148?
Raptormodeller wrote:If it wasn't a mid air collision then the pitot tubes probably iced, but if they did, why the speed fluctuations? Speed didn't fluctuate like that if we take a pitot tube related incident like AF447 iirc.
edu2703 wrote:According to ADS-B data, the aircraft was falling with 22,000 feet per minute when the signal was lost.
https://twitter.com/flightradar24/statu ... 3429860352
FabDiva wrote:Raptormodeller wrote:If it wasn't a mid air collision then the pitot tubes probably iced, but if they did, why the speed fluctuations? Speed didn't fluctuate like that if we take a pitot tube related incident like AF447 iirc.
Isn't the FR24 speed the Ground Speed which is calculated by the aircraft's navigation system and accounts for winds/air density. The Speed on the PFD will be different as that's the speed relative to the air around the aircraft. If they lost airspeed, then Groundspeed will still function (but isn't very useful to the pilots)
I'm wondering if the aircraft had icing given the weather.
Raptormodeller wrote:If it wasn't a mid air collision then the pitot tubes probably iced, but if they did, why the speed fluctuations? Speed didn't fluctuate like that if we take a pitot tube related incident like AF447 iirc.
WIederling wrote:Raptormodeller wrote:If it wasn't a mid air collision then the pitot tubes probably iced, but if they did, why the speed fluctuations? Speed didn't fluctuate like that if we take a pitot tube related incident like AF447 iirc.
AF447 was in a flat stable stall.
Imagine a spin or what the KC-390 prototype experienced.
Raptormodeller wrote:If it wasn't a mid air collision then the pitot tubes probably iced, but if they did, why the speed fluctuations? Speed didn't fluctuate like that if we take a pitot tube related incident like AF447 iirc.
Cush wrote:Reports now state that the pilot refused de-icing prior to departing from Domodedovo (DME).