Many people are asking questions about the recent plane crash in Nepal, it's not obvious why this plane fell out of the sky in such dramatic fashion leading to all 72 souls on board losing their lives. There are a couple of videos around on the internet one showing the plane from the ground (see above) and another a stream from inside the cabin, I think the external one is the more telling. I used to do a bit of flying back in the day and it strikes me from the way that the plane drops that maybe some kind of stall is involved, this happens when the approach angle is too high and/or the air-speed is too low. The wings cease to provide lift and that invariably happens on one side or other first leading to the catastrophic and violent banking that's seen in the short video. Hopefully the black boxes will assist the investigators, airspeed and pitch angle on the approach will be important clues.
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