Moscow-Orsk. An-148. Air Disaster Reconstruction.

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English channel / @aircrashinvestigate-2
This reconstruction is based on final and official IAC report and represents its video version.
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Answers to most popular questions:
1. Why can't they just measure speed by standard GPS or smartphone?
In order for an aircraft to take off, it needs lift, created by air pressure. I know, it is pure magic)
PSS sensors measure the air pressure and provide instrumental speed. Typical speed, the way you understand it is also measured, but measured via satellite and most importantly it just doesn't provide one with full understanding of what's happening with the aircraft. More so, all piloting instructions are based on instrumental speed.
AN-148 is equipped with Angle of Attack gauge, which was successfully used by the crew of the flight that is also mentioned in the end of this video. Unfortunately, the crew of the flight that this video concentrates on, didn't make use of it, due to incompetence.
Flight Sim used in the film: X-Plane 11.
AN-148 model by www.jardesign.org
Special thanks to Denis Okan for provided information and knowledge.