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So, I think, the reason people are anxious about this particular crash is because the flight trajectory resembles the trajectories of 737-MAX crashes. Although

by mrtksn 5y ago

So, I think, the reason people are anxious about this particular crash is because the flight trajectory resembles the trajectories of 737-MAX crashes. Although, this is not an MAX but 800 version of the 737, I think the first glance similarities are eere. However, there's no way the reasons are the same since that version of the plane doesn't have the MCAS system that caused the crashes. My bet is on some horrible maintenance mistake making the vertical stabiliser inoperable or a human factor(terrorist attack or pilot suicide). I will be surprised if it turns out to be Boeing's fault as this model is extremely popular and has showed not tendency to nosedive(unlike the MAX).

Markoff 5y ago
no, it doesn't resemble MAX crashes which were under 45 degree descent, this was almost vertical 90 degrees judging by two unverified videos available
- mrtksn 5y ago
  Here is the flight data: https://twitter.com/flightradar24/status/1505863117343014916/photo/3 https://twitter.com/flightradar24/status/1505863117343014916... The crash video only shows the last 1-2 seconds but in reality the plane seems to plunge spontaneously, then recover a bit and climb and finally plunge again. It's not identical(this plane doesn't have MCAS) but it tells a similar story where the plane nosedives, recovers a bit and nosedives again - which is quite similar to the MCAS situations. I would say, the primary difference is that MCAS crashes happened during take off, on this one during a cruise.
mrtksn 5y ago
>vertical stabiliser I meant horizontal stabiliser
asdf9876 5y ago
How about if it was to do with high angle of attack mode of speed trim system on 737 800? Don't think anyone trained on that, mind you they never was told about MCAS either... Either catastrophic failure which is highly unlikely, or something pushed nose down rapidly like on the Max, ie nose down trim. Actually come to think of it, look into the similarities with the Fly Dubai crash! They said the pilot held the trim forwards... yeah right!

by mrtksn 5y ago

Markoff 5y ago

no, it doesn't resemble MAX crashes which were under 45 degree descent, this was almost vertical 90 degrees judging by two unverified videos available

mrtksn 5y ago
Here is the flight data: https://twitter.com/flightradar24/status/1505863117343014916/photo/3 https://twitter.com/flightradar24/status/1505863117343014916... The crash video only shows the last 1-2 seconds but in reality the plane seems to plunge spontaneously, then recover a bit and climb and finally plunge again. It's not identical(this plane doesn't have MCAS) but it tells a similar story where the plane nosedives, recovers a bit and nosedives again - which is quite similar to the MCAS situations. I would say, the primary difference is that MCAS crashes happened during take off, on this one during a cruise.

mrtksn 5y ago

>vertical stabiliser I meant horizontal stabiliser

asdf9876 5y ago

How about if it was to do with high angle of attack mode of speed trim system on 737 800? Don't think anyone trained on that, mind you they never was told about MCAS either... Either catastrophic failure which is highly unlikely, or something pushed nose down rapidly like on the Max, ie nose down trim. Actually come to think of it, look into the similarities with the Fly Dubai crash! They said the pilot held the trim forwards... yeah right!