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#111
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01-17-2023, 09:34 PM
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Re: Yeti Airlines Crashes a Mile Before Runway in Nepal
Nope At least if people looking for plane crash related death footage it can be found instead of being buried by the gazillion Brazilian/south American/asian death threads |
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#115
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01-18-2023, 04:04 PM
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| My Rank: PRIVATE Poster Rank:10831 Join Date: Apr 2010 Posts: 12 Mentioned: 0 Post(s) Quoted: 6 Post(s)
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Re: Yeti Airlines Crashes a Mile Before Runway in Nepal
When approaching the stall, there is no noticeable change in the ATR behavior; that is the reason why the aircraft is equipped with two “artificial” devices -stick shaker and stick pusher- based on the angle of attack measurement to detect the approach to stall. Natural or artificial clues may be detected as a consequence of an approaching or imminent stall: • buffeting • reduced roll stability and aileron effectiveness • low airspeed visual or aural indications • reduced elevator (pitch) authority • inability to maintain altitude or rate of descent • stick shaker that warns the pilot on approaching the stall • stick pusher if angle of attack continues increasing despite stick shaker alerts |
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#116
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01-18-2023, 07:55 PM
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Re: Yeti Airlines Crashes a Mile Before Runway in Nepal
Exactly! this plane should have warned the pilots of the impending stall and pitched down on its own as it approached stall unless the system was disabled, broken or overridden. |
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#117
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01-18-2023, 09:37 PM
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Re: Yeti Airlines Crashes a Mile Before Runway in Nepal
I wasn't whining. I was pointing out a repost for the mods to address. DR does not allow parallel threads, especially at the same time. Might be worth your while to snoop around in other forums once in a while, so you don't miss more good stuff. |
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#119
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01-18-2023, 09:53 PM
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Re: Yeti Airlines Crashes a Mile Before Runway in Nepal
Agree. I heard that breathing but assumed it was noise from the wreckage. I was in denial that anybody could survive a 150mph crash even for an instant, while holding onto their phone! |
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#120
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01-18-2023, 09:53 PM
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Re: Yeti Airlines Crashes a Mile Before Runway in Nepal
That was a classic stall-spin behavior common to all planes/jets that lose their lift due to one or a combination of factors: 1. too slow 2. too nose high 3. turning too steep 4. environment degrades lift (wind sheer, icing, etc.) 5. other pilot control error or mechanical failure (flaps, rudder) that lowers lift During a stall-spin, the lift is no longer holding up the wings, so the plane will rotate on its long axis and arc down to earth like a lead weight, just like we saw on the video. The flight recorders have been recovered. Nobody will know the cause until the investigation concludes, but basic current speculation leans to one or more of these factors causing the stall-spin: 1. too nose high - a pilot will raise the nose to drop altitude for the landing - this jet was dropping altitude to land and some observers think this flight looked nose high in the video 2. turning too steep - the flight path to the target runway involved two steep 90-degree turns in succession - this it the normal path for this flight 3. wind sheer - the jet was descending into a river valley in mountainous terrain - this setting is subject to wind currents that can buffet the jet and momentarily lower or erase the lift 4. other pilot control error - interior video showed flaps were 50% during part of descent where 100% may have been called for - a number of observations that the engines appeared to be at lower RPM/thrust settings than called for 5. mechanical failure - always a possibility - may have affected engine settings in this case |