HUMAN ERROR or MECHANICAL?! | Yeti Airlines flight YT691 illustrated
This aircraft crashed because the propellors went into feather mode or neutral. This is according to the preliminary accident investigation report costing the lives of all 72 on board. The flight path of this ATR-72-212A is replayed over a 3D model of the city is shown according to the timestamps from the official preliminary accident report.
There is something very puzzling why the the propellors were de-powered at the same time the pilot said he was lowering the flaps. The video explains the last 60 seconds and what feathering the props does. You will hear from eyewitness Diwas Bohora who lived next to the crash site. From his video it was possible to retrace the final moments of this tragic flight.
This aircraft crash analysis has mapped the flight path and landing approach through careful cross-triangulation and retiming of a Facebook livestream video captured by Sonu Jaiswal, a passenger from India who was at the back of the plane on the left. Watch his video fb.watch/p2FIgAjUuX/?mibextid...
The accident is centered on a accidental feathering of the props on downwind leg. Feathering the props left the aircraft without forward thrust. It lost flying speed, stalled and fell out of the sky before the pilots could work out why there was no power to the props.
The timestamps from the official preliminary accident report are replayed in a 60 second countdown to impact.
Deepest condolences to those who have lost loved ones.
Pokhara is a tourist town in the centre of Nepal. It was a half hour flight from Kathmandu.
Yet Airlines flight YT691 crashed at 10:57am on Sunday 15 Jan 2023.
Location of the crash site | goo.gl/maps/CE556jwFi8PdGtM3A
Preliminary Aircraft Accident Report | drive.google.com/file/d/1x3fA...
Video of crash filmed from balcony. Thanks to Diwas Bohora for granting permission to use his footage. • I watched this terribl... His KZhead Channel / @channeld4641
I can't believe I can find this quality of work for free. Taking the time to interview the witness was incredible. Your animations are already so well made, talking to him just added a very human element to the situation that many disaster channels lack. I hope the friends and family members of the victims can grieve and heal over time. I wish the same for Mr. Bohora.
Thank you. Your comments are much appreciated. The world needs the kindness and sense of humanity of Mr Diwas Bohora 😊 @channeld4641
@@Mike-BellI wonder if the Beechcraft crashed in Kuala Lumpur is similar
I have a feeling youtube wont be free long
Believe it. Welcome to KZhead
Agreed. Great work
OMG. Mike, this is a brilliant combination of video and animation. It really clarifies the situation. What a shocking error. What a shame! My condolences to the friends and families of those who were lost.
Thanks Maud. My most loyal follower 😄 What a tragic sad crash. At least we know the passengers didn’t know what was coming. Thanks to the rest of the video they had 2 seconds of knowing there was something wrong.
@@Mike-Bell I like your work. Your videos get better each time.
Absolutely the best and most technical reconstruction I've seen of the event so far. Quality job really.
Nah he stops too much... i only got through 3 minutes
5:32 The old runway is frustratingly close. Given how close they were to flying the centerline, they probably had enough energy left to make it too.
Your video was incredibly informative and engaging. I appreciate the time and effort you put into creating it, and I learned a lot from watching it.
Wow, thank you! I appreciate the feedback and hope you are back to watch new videos I make.
@@Mike-Bell mike the pilots accidentally pulled the weathering lever because they were very tired and had already flown that route about 3 times that day
The fact that the plane designers and pilots don't see the risk of anybody making a mistake as this is beyond my understanding
This is one of the very best aviation accident breakdown/animations that I've come across. You deserve every sub and view that you get fine sir! Fantastic!
Wow Joel. Thanks for your high praise. Inspires me to make more and keep improving my skills further.
As an aviation enthusiast, I highly appreciate this video. I’m always interested with aircrafts and want to learn more about them I also often do research and watch videos about aircraft accidents/incidents. I always look for videos showing an accurate animation for the real aircraft accident. I remember watching your videos about Champlain Towers South in 2021 and 2022. I was surprised to see that you also covered on this aviation accident. I do like to see you covering on more aviation accidents.
I really appreciate the effort you put in contacting people who witnessed the accident and the 3D render. Thank you for the amazing content.
Mike, amazing video!!!! I just want to point out, moving the wrong lever is not an inexplicable error. It has been done quite a few times in the past, even with levers and motions as different retract the flaps instead of raising the landing gear after take off. The flaps lever is wing shaped, located in the central pedestal and needs to be moved forward to retract the flaps. The gear lever is wheel shaped, located on the instrument panel and needs to be moved up to raise the landing gear. Flaps and spoilers have also been confused despite being on opposite sides of the central pedestal with the throttle levers in between. There are basic ways for such a mistake to happen: One is intending to move the correct lever and missing. For that mistake, making the levers as different as possible in shape, location and operation is helpful. If you expect to grab a wing-shaped handle and grab instead a wheel shaped one (and you have touched both many times before) your brain will immediately sound an alarm. But the other way is you intending to operate the wrong lever, due to brain far... ehm, fluke. In this case no amount of differentiation will save you because your brain is actually expecting to receive the sensory perception of the wrong lever. What does help, however, is touch-confirm-move-verify-call. The pilot flying calls "flaps 30", you put your hand on the lever, confirm visually that you have your hand in that lever, move the lever to the 30 position, verify the result with the flaps indicator, and call "flaps 30". Another point is the landing checklist. In this accident it was performed after they had called for flaps 30 and they had mistakenly feather the propellers. What kind of landing checklist did they run that they didn't check the flaps position? I'll tell you what kind. Recited checklist. Checklists need to be acted, not recited, you read each item's challenge, then check the condition of the system by actually touching the lever, knob or indicator, then call the condition, then confirm that the condition is what the checklist was expecting as an answer. For example: "Landing gear?" - Touch and look the landing gear lights and then call out "Three green" - Then read the expected response from the checklist "Down and locked". The safety culture at Yeti has to be quite crappy for them not checking the result of the action when they change or attempt to change the condition of a system, and they they don't catch that in the checklist. Especially considering that these were a captain and a captain-instructor, not some junior first officer, So what they did must have been they normal way to operate. And because they cannot operate like this in isolation, because they would be caught and called out by other pilots, that speaks volumes for their safety culture.
That's a good analysis. Although, it assumes that the feathering setting was the cause. it's "possible" it was something else. But yeah, what you typed is most likely.
@@kathrynck . Agreed. But given the sequence of events, I cannot think of any other failure mode other than the propellers having been feathered by mistake. 1) PF: "Flaps 30" 2) Click sound 3) PM: "Flaps 30" 4) Propeller torque and RPM go to zero in both engines simultaneously while the core of the turbine keeps operating at normal RPM 5) Flaps indicator: Remain in 15 (previous setting)
@@adb012 yeah.
Makes sense, but in situations where you have to take quick decisions like if you know your plane will be stalled at any moment especially when that close to ground i think going through the recited checklist procedure might not cross your mind. Your reactions are almost reflexive at that time I guess.
@@harixav ... The landing checklist is a normal checklist that they "performed" (ineffectively) shortly after they made the mistake and before they realized there was any problem. It was NOT when they were about to stall or after the realized that the speed was going down and the engines were not producing power.
You make it so easy to understand. My heart is with everyone that lost loved ones xx
So tragic
Terrific analysis, animation, illustration and narration. Thank you so much for all the work you've clearly put into this.
this is a phenomenal presentation. Great use of animation + explanation that I haven't really seen on other channels. Thanks for sharing. Condolences to those who lost someone on this flight.
Much appreciated Mark
The entire video is downright diagnostic - especially grateful for the detail in narrative and animation - found the segment on the flaps/thrust levers to be comprehensive and concise (a rare commodity in this era). Many thanks 👍🍻
They should make it impossible to reduce power to an extent when the plane has x amount of airspeed. Idk why that's not already implemented.
Exactly. I guess aircraft tech takes years to get upgraded.
Outstanding graphics showing the physical actions that caused this accident. Very easy to visualize and understand the sequence of events that took place in the pattern while preparing to land. Thank you.
It's amazing how you modeled the urban neighborhood so accurately in 3d matching exactly with the videos. And you're also using BLENDER for the animation. As a Blender 3D artist, I can guess the amount of work went into it. BRAVO!👍👍 And my heart goes out to the departed souls of this crash, R.I.P!
I'm not sure whether you would see this or not, but i wanna thank you for the quality work that you provided for free. I will be attending flight school in the near future, and these types of videos help me realize and understand all the different complications that can happen in aviation. I wish these 72 victims Rest in peace.
May you become a fantastic pilot!! Learn the muscle memory and visualise beforehand what you will do in any emergency so you be overcome by panic when things arent according to plan.
Little late to the party, was a mechanic on this airframe type (older freight conversions) for 6 years. For what it’s worth, here is some things I can remember off the top of my head. The older pw127’s didn’t have the “100%, Auto, ftr” gates for the condition levers so keep that in mind for my anecdotal evidence. If the condition levers were somehow pulled into feather (what we called ground idle). You would get a noticeable lurch as the props transitioned from a shallow low air speed pitch into the feather pitch. You would also lose “a/c wild” power which should have thrown several warnings since some anti ice and lights use that power, as well as bleed air changes from low pressure section to hp section. At this point the engine has a different fuel schedule and turbine speed and egt ( translation: the jet part of the turboprop isn’t making power but idling) and trying to correct that by moving the condition levers takes quite a bit of time. Now with the power levers not in flight idle I don’t know if the engines would have done anything once pulled into feather. So the scenario I see happening is, accidental pull of condition levers to feather, may have been corrected after accidental pull. Correction of condition levers back into a flight setting either has no effect because of power levers (throttles) are out of flight idle setting or engines require too much time to spool back into power delivery and inducing a stall. I will say this, pulling a condition lever from any setting into the feather setting is almost an immediate change and has very little transition time. Please take this info with a heaping spoonful of salt though.
And maybe the captain was in the right seat, not his natural habitat, operating those controls with his left hand. Being Tibet, in the mountains, maybe the turbulence masked some of that initial lurching you mentioned. Is that plausible? Would it be way outside the slowing normally associated with flaps full?
In the cockpit voice recording you can hear numerous alarms going off as soon as the props are accidentally/purposefully put into FTR (feather mode). It also doesn't make a lot of sense that the senior pilot feathers the prop when asked for flaps then a few minutes later prior to taking control actually does move the flaps lever. You would think that you would remember moving something that wasn't flaps prior.
Incredible job displaying everything and explaining the story. Such a tragedy I cannot imagine how frightening those moments could be.
I know you’ve read this before but I’ve got to add my 2 cents. First off let me commend you on a very well done video. You’ve explained this very well for those of us who love aviation but know nothing about actually flying. Second, your use of graphics and to the point dialogue combined to show how one wrong lever being pulled is the difference between life and meeting your maker. Good job. Lastly, I really thought that the guy who live-streamed the crash survived but that’s not the case. The video literally goes from happiness to flames in about 10 seconds or less. My heart goes out to the victims and their families. I can’t imagine their loss.
Never seen a more in depth video, clearly taken the time and effort. RIP to all those on board 🙏
Brilliant Mike. What an outstanding re-creation animation of the incident.
Thanks. Inspires me to keep making more. My skills keep improving with each video. Hope to have you back watching future videos.
what a brilliant clip, very informative. Thank you for the time and effort you have put into making this video
Glad it was helpful!
Subscribed!! OMG, this is professional quality or even better!! Absolute gold
So puzzling.. Thank you for this. Excellent format and coverage.
Thanks Jonas. Very puzzling. It doesn’t really make sense. It can’t just be a mistake. I think the cockpit voice recording explains a lot more. But the investigators are holding on to the information until they have established more facts.
Great video presentation. Well explained. Amazing how one's muscle memory could have so failed them at such a critical time on approach. RIP to all.
Incredible work. Thank you so much for making understand in an easy way.Heartfelt condolences to demised soul.
Thanks Diwas for your contribution 👍🏻
It's my pleasure sir
When i want a clear, unbiased, and informative understanding of a subject matter (which is always) i come to you Mike.
What a nice video. You really managed to illustrate such a sometimes complicated topic in an easy way. Keep it up! Groete uit Duitsland! 🇿🇦🇩🇪
Thanks. Greetings from Cape Town...
Brilliant reconstruction of all stages of the crash! This one is beyond baffling, in my opinion there was something else at play here - we shall see!
Great video. Honestly I have seen very similar mistakes cause crashes and near crashes before. It just seems so simple to restrict the ability to feather any prop when airborne.
Unfortunately, feathering is a matter of survival if encountering engine trouble on one or both engines. If you can't feather the engine that's not producing power, you will have too much asymmetrical drag and will unavoidably enter an inverted condition. Likewise, if both engines stop making power, both props need to be feathered to minimize overall drag to give the best glide. That's just the best design we have at the moment and why training etc are so critical.
Holy smokes man! What an amazing video!!! Great job!!! EXACTLY what I wanted to know and see regarding the crash. Thank you bro!!! 🙏
Thanks 😊
Really appreciate the effort you put into this video. The video was very simple to understand and was very informative.
I appreciate that!
Excellent visual simulation! Looks like the pilot was in error for not noticing the blade has changed to feather mode.
The error is far more startling becoz the levers were of different size, height, and functionality.
You need more recognition, this quality of work and research deserves compensation.
Such a great video! Animations are amazing and the interview is really the cherry on top. Keep up the phenomenal work!
This is one best animated and well explained video that I have come accross on an airplane crash investigation. All kudos to Mike. Remarkable job sir. I pray that God gives the family of the people killed in this tragedy strength to bear such a terrible loss.
Thanks Rishi
Perfeito vídeo e perfeita explicação. Muito obrigado pelo tempo e planejamento deste vídeo. Sensacional parabéns! Deus abençoe os familiares dos falecidos neste trágico acidente
Jezuz they had time to fix it and didn't even identify the mistake for a long time.
Just came across this video, your channel is amazing, extremely informative and easy to understand. We need more people like you! Thanks for making these videos!
I appreciate that!
great video Mike and narration concise and clear
The animations and edits are incredible!!! What softwares did you use to create this wonderful piece of art?
Thanks Captain. I use Blender for the 3D animation and Da Vinci Resolve for video editing.
Incredible insight. I honestly can't believe how on earth he feathered both props...
Perhaps he skipped some classes.
Junior pilot was flying the plane, and it was a woman.
@@ruadhanmacainmhire4119 So what? Senior took made the mistake and killed them all. And it was a man. Again. So what? This is one of the jobs where gender doesn't matter. In fact women might even be better pilots than men due to their innate lack of taking risks...
@ruadhanmacainmhire4119 although the inexcusable mistake was committed by the male, experienced instructor
Absolute clearest and concise video I've seen on aviation accidents, thank you!
This is a great video, in such a short video, you explained all the detailed of this incident so clear. Thank you very much.
Incredible work! Really, really impressive. You learn something everyday. Very sad that this happend. Keep up the good work.
Thanks Hadi. I appreciate your comment 😃
If you think about it, pulling the flaps lever up is quite similar (almost the same) as squeezing the locks on the feather lever. If you hold either from below, pull them up (the whole flap lever or the lock rods on the feather) you will unlock them and be able to move them. If you are not paying attention and are used with the feeling of pulling the lever up and moving them, then you could make that mistake (also, the flap lever at 15 is at about the same position as the feathers in auto). As for if it was mechanical error, it is not likely. The preliminary report show the feather was moved back to auto a few seconds before the flat stall - a mechanical failure would not "notice the mistake and move the feather back". But it was too late.
Good point, if you don't put weight on the handle the action is the same. 🤔
Holy Cow! Mike this video is absolutely amazing. I've been trying to understand this air disaster. Now I understand it. I'm totally blown away by this. Thank you so much. Subscribed!!!!❤
Mike would you do one of these on Air France 447? And Aero Peru 609? I would love to see you at work on these. The Air France 447 disaster has had my interest for so long. It's not that I want to understand it, but for some reason I NEED to understand it. I don't even know what that means LOL. With all due respect, I love watching flight Mentor. He's really great, but it's over my head. I have a hard time understanding the things that he's talking about. But you put this all in layman's terms. It is so informative and I totally understood it watching it the first time. I'm so so thankful for you and this in your videos. Air France 447 is something I would really love to see you do.
Thanks! There are so many crashes that can be illustrated. I am keen to explain how the Kobe Bryant was in a hurry to get to the destination and in the process got disorientated in the cloud. And show just how easy pilot disorientation is. And Air France 447 how a pilot trusts instinct instead of instruments and technical knowledge.
This is an insanely high quality video with a good animation/visualization and explaination, way to go
Mike, great job with the video and animation!! I know there is a cockpit voice recorder and a instrument data recorder. Shouldn' t aircraft manufacturers also look into adding a video camera to record cockpit proceedings. Having visuals of what took place, as an additional aid, could be greatly beneficial while analyzing events during investigations. Not to be released to the public, only for internal investigation.
Adding video from cockpit, nose forward facing and tail backwards etc. is technically simple. But the bureaucracy from authorities and pushback from pilot lobbies is the real hurdle. I agree in this case it would have been of major help. Did pilot flying or monitoring finally put the flaps to full? Was pilot monitoring acting normally or sick. These are important questions and just based on cockpit voice involve guesswork.
@@Mike-BellJust an enthusiast here. Isn't there a Flight Data Record of the flight parameters with timestamp that can be checked against the timestamps on the Cockpit Voice Recorder? That may provide more insight as to when the plane started losing power and when did they apply Flaps 30
@@pradeepsahoo7243 Only the investigators have that information. They will make a final determination based on those numbers. Its not certain the public will get to see the data.
@@Mike-Bell Gotcha. Great video and analysis btw
ya, i don't get how how they dont have dashcams on airplanes like how most cars have dashcams nowadays! should have it it auto turn on when approaching landing ... or auto turn on when takeoff! maybe too costly to add cockpit cam lol
Kudos for your brilliant animations and proper explanation 👏
Thank you so much 😀
I'm no pilot but heard of this story today and found your video. Extremely well spoken and well researched, thanks for sharing, I found this video very educational. Hopefully this is useful for future pilots in training.
Very good quality documentary, it must've taken a lot of time! Thank you and may all poor people rest in peace!
Absolutely amazing work. Such good animation and explanations. Still cannot understand why this happened. How could a pilot make such a mistake :(
Because she is still a Junior? and very nervous?
To be honest it's a mistake that I see myself replicating in particular conditions... and I am confident almost any pilot could replicate something like that independently from how many hour of training they went through. Whatever might the conclusion be in the final report, if the preliminary report's finding will be confirmed, a design change of the AC controls would be the SAFEST way to prevent that scenario. Had the junior pilot seen what happened before she would have reacted but she did NOT see and she couldn't probably tell until it was too late. For example a warning for mismatched approach configuration could sound or even a complete relocation of the controls. Both pilots have to picture the situation within seconds of happening.
Hey Tobias. From the cockpit voice I suspect they know a lot more but are waiting till they understand more before they release the information. Rumours are that the pilots were unhappy about the airline and their pay in conversation earlier in the flight. So perhaps he was angry and distracted. But I disagree this is an easy mistake. A pilot doesn’t just switch off his propellers and slip his mind. It simply too silly a mistake. And 6 seconds later they got their warning signal. That required checking engine gauges. Seeing both torque gauges at zero is very serious and an obvious clue to feathering. And if you cant figure it then as pilot you need to put the plane down in an emergency landing right away before you lose flying speed and control of the aircraft. This arrangement of levers and handle shape is standardised across all aircraft. I think there is something more that will be revealed in the final report.
@@Mike-Bell Hello there Mike, I see your point but... have you ever done something out of distraction that you thought it was something else? It's something human in nature. It's not about standards when people's life is at stake. If there is a chance that my distraction can also be overlooked by a second pilot... then there must absolutely be a design implementation that prevents the event in the first place and warns the pilots immediately should it ever happen... not after the AC has lost momentum, that is far too late... we know it for a fact, our ears are full of "pull up, too low terrain" (stall... whatever) warnings and what almost exclusively happens in these tragic circumstances is that they don't PULL up, they don't advance the thrust levers... they don't realize what's happening until it is too late. That's why I claim something must have warned both pilots of the error immediately to take corrective action. But I am sure this not being my area of competence there's who knows better... I still stand behind my concept though, as it would be the only way I see myself being saved from such a deadly oversight.
Excellent presentation. Thank you and rest in peace to all the victims
Thank you so much for your video. I really appreciate it. No annoying sensational tones and shouting. Just straightforward informative. Thank you
I really appreciate your comment. I also have a great distaste for sensationalised hyped content. And it’s great when my calm and accurate approach is appreciated and acknowledged. I value my credibility and will not compromise on that 😃 In turn my viewers can rely on credibility with my channel.
Best video on this so far. I hope they get to the bottom of this. The Nepali people are very special and the impact of this stretches far beyond those poor individuals who lost their lives and their families. I know Nepal is renowned for its resilience but I hope this new airport only provides happy and proud moments in the future and travellers continue to learn that it is the most magical place in the world, to visit.
Hey David Love your comment. It’s plain to see you are special human. If you lived down the street I think we could be coffee friends. 😊
@Mike Bell Hi Mike. I do live in Oregon USA now but did live in South Africa till 1999. I am guessing from your accent you are from SA as well. I have to admit I am very biased about Nepal. I have visited twice and left only a month before this accident. I had been almost as excited as some of the locals I know about how positive the new airport would be for everyone. This made something immeasurably bad even worse. If you have never visited the people in Nepal are incredibly kind, hard working and hospitable and its a very easy place to love. And whilst understanding their transport challenges in terms of equipment and procedures (it does not seem these were a factor here) I have only had the greatest respect for the pilots and bus drivers who do an incredible job under very tough conditions. I can only fault some taxi drivers, which seems to be a problem everywhere. I just hope there is some final explanation which does not add to this tragedy
When I read the prelim report, I was truly boggled. I have to wonder what the Junior was thinking and is there more involved (suicidal?) than what appears.
5 STARS sir, an excellent way to show this terrible occurrence. Please keep up your excellent work. If you are in contact with the young man who observed the accident and it is appropriate give him my condolences and reassure him that his unfortunate experience aids those who work every day to make flying safer and those who fly aircraft to do their job in a better and safer manner.
Thanks. Your comment is great for motivation 😀
cant believe you dont have a million subs yet, please keep doing what you do, your analysis was top notch
best vid so far on this rip
PLEASE NOTE: The preliminary report only confirms both props went to feather. Think of feather like neutral gear in a car. It does not say that the condition (propellor) levers were moved nor who may have moved them. So we can’t be certain who feathered the props or even if they were feathered by pilot action. We only know that when the pilot monitoring said “Flaps 30 and descending” the flaps did not lower and both propellors went to feather, at 60 seconds to go. The possibility exists that a systems malfunction could have feathered the props in error. The prop lever would have remained at the AUTO position. The procedure in the case of an erroneous auto feather would be to advance the prop lever to 100% OVD (override) position. *The flight was operated by two Captains. The "junior" pilot was an experienced Captain with 6,400 hours but was not yet signed off at this new airport. * The black box does not include cockpit video to confirm any actions by the pilots. The black boxes only records flight data and cockpit voice.
I am confused. When she is calling it out, is she saying this is what she going to do? Or when she calls it out, is she instructing the senior pilot to pull the level? Do you mean she is calling it out as she is doing it, but the senior pilot should have been monitoring her to see that she pulling on the right level?? If they made the error and the alarm went off, could they not see that they had made an error and correct it right away? Or is everything happening so fast that they was very little time to react? Awesome graphics by the way. Having that footage of the planes final footage from both inside and outside has made a lot of people wanting to know what happened. So tragic. May they rest in peace.
Pilot monitoring said "Flaps 30 and descending". From the way pilots talk it is widely accepted senior pilot was moving the levers. Pilot flying will often have co-pilot do things especially while landing when there is a lot to do and keep a check on. And yes the alarm should have had them check gauges and instruments to problem solve. Zero torque on both engines was loudly pointing to a prop issue. Sadly their trouble shooting came up empty.
Mike. Amazing analysis and re-traced animation! If only the crew had realized the loss of power a little earlier, they could have made an emergency landing on the old airport runway which was right on their path.
Exactly. Forced landing was the right response at master caution and both engine gauges showing trouble. Although they were already low for the old runway too. Height is always the pilots friend.
Bravo Lad, Outstanding work.
Thanx sir for ur explanation.From Pokhara, Nepal.
You are most welcome. Greetings from Cape Town, South Africa. I'm glad KZhead are now promoting the video in Pokhara. Trajic event for your city and country.
Once again thanx sir for ur reply n expect ur follow up analysis after final report of this tragic plane crash came out.
Excellent video. I don’t see how he could have made such a mistake or why neither of them knew what was wrong.
Thanks. I agree it makes absolutely no sense.
Absolutely brilliant the way you have put this together defo got my sub impressive work 👏 🍻
Welcome aboard!
Fantastic. I've seen multiple videos on this crash - this one explained it the best. Thanks.
I would consider that it may have been something more than just a simple error. The flap handle has an airfoil or flap shape on the top. It was the handle closest to the right seat. The prop pitch controls, of which there are two, have a different shape, are in the middle position between the flaps and throttle, and have a different shape. One can have a very hard time seeing how this could happen accidentally..
Some have said because he was in the right seat but I find it hard to believe. Being a captain he was used to being in the left seat. I think he was either very tired or stressed something was on his mind. Maybe on set of a heart attack. He did not monitor air speed or the engine gauges which are on the glass display. Something is not right was this suicide.
I’m trying to understand why when the senior pilot took control he did an immediate turn towards the runway at stall speed. It kind of seemed like he wanted to just force it to the runway for a quick ego landing instead of keeping wings level until they got thrust back then going around. Also the sharp turn was towards a more populated area. Looks like they were fortunate to crash into that gap instead of into several buildings. Regardless, my heart goes out to everyone who lost their lives 😢
Only thing that makes sense to me is he was having a stroke.
I heard the senior pilot was a woman
I'm left wondering if he realized it was non-recoverable and shot for the canyon.
@@Mike-Bellor that he lacked an unfortunate amount of brain cells. Let’s be real, Senior Pilot pulled a series of idiotic moves here that got people killed.
@@arcosprey4811 The moves were so idiotic that I think it is conceivable that he had a fast onset cognitive impairment. Or high cockpit workload because of landing at an unfamiliar airport. The final report has been handed to the Government and to be released publicly at the end of Jan. Then we will know more.
This man's youtube channel is actually pretty neat, this is the second video I've watched today. Would come back and watch more videos later.
Best; Video, Animation, Script & presentation !!!!!!! I'm from Nepal and thank you very much for this Awesome Video. i hope you'll make another when the Final report comes out. Thank You Very much Mike!
Thanks Sunuwar. So glad you like it a lot. Yes I would like to make a follow up video and hopefully get to explain the unexplained aspect of this tragedy.
Probably today all will be alive if only the plane land on the straight approach rather than the circle approach.....
What you said means that they would have died on another day when they had to land from a circular approach...
Tragic mistake..its possible the right seat pilot may have intended to reduce the power levers for the PF in an attempt to slow airspeed on the downwind...but instead moved the Condition levers which although you need to lift the triggers, they are much more similar to the power levers than the flap...this was probable done by motor memory rather than looking and confirming...because just a few seconds later the flaps were selected to 30...just one possible scenario...
Motor memory - my hypothesis is that the captain was used to flying in the left seat, and his motor memory involved his right hand, not his left hand, which he had to use from the right seat. That happens in aviation.
Thanks for taking the time to explain this accident 👍
Amazing video! Thank you for your work! Goes to show you how much is going on when landing or taking off. There is no time to find and fix a mistake in time.
Glad you enjoyed it!
simply no understanding as to how the senior pilot made this deadly error and did not figure out what he did in time to save the aircraft. A very informative video, thank you.
Thanks. It is too basic an error. Makes no sense at all...!?
Perhaps an audible "props feathered" or "prop condition" chime. But still, it's incomprehensible how he made such an error and didn't catch it after nearly 60 seconds of flying and the pilot flying, I think, twice saying she had no power.
@@karl46 The master caution chime and both props reading zero torque and lowered RPM. That tells any well trained pilot what they need to know. The systems did their job.
@@Mike-Bell I can't disagree with you in any way. As I said above, the whole thing is incomprehensible.
I remember when this was on our National Nine News in Australia and the so called "aircraft expert" said they could have easily recovered it if they had just throttled up!.... Well Mr "Expert" I see you were WRONG yet again. Every time there is an aircraft accident they call upon this muppet who has NEVER actually been right!🙄🙄🙄🙄 Thank you Mike for actually providing factual information on the accident.👍 RIP to all those lost souls, may they find happiness in the afterlife🙏
Thanks 😊
I bet you were nervous - 3 days after publishing, this vid had less than 2K views. Thankfully, 7 days later you're at a quarter-million. Excellent video! Keep up the great work. RIP, to all those people. 🙏
Hey Chuck I'm not yet a big channel so my views are all over the place. Some of my videos get millions of views and others get 2k so I never know what to expect. I will just keep making quality till KZhead discovers my audience and promotes my videos to them and with this video it seems like it is starting to happen... even though this video was dead for a couple of days.
@@Mike-Bell I have no doubt your channel - which is already great, imo - is going to continue to grow much, much, more! Your videos are great, and get to the heart of what we’re curious to know about, in these events. Keep doing what you’re doing! 👍
Hi Mike. Great to hear a friendly accent. 🙂 Your video is excellent. Such a tragedy and the footage is chilling. Thoughts and prayers to all involved.
As a layman, what scares me is not how unthinkable it must be to mistake levers, but rather just how easily they can be confused. Similarly I would not lay a tablet of arsenic next to a vitamin tablet - even if they are different shapes and colours - all it takes is one absent moment of mindfulness.
It's not the levers that are easily confused, it's the seat the captain is sitting in. For someone who normally flies in the left seat, operating all those controls with the left hand is not normal, and it requires clear focus. I don't think this captain would ever have done that from the left seat.
@@beenaplumber8379 That's no excuse. The seating position shouldn't cause this type of egregious mistake to occur because the levels are as different as cheese is to bread. Other than located side by side, there's nothing to cause such confusion. I think the trainer pilot was either experiencing a mental or medical issue, suicidal, very inexperienced, or drugged up and under substance use. Or perhaps he was extremely distracted from his important duties by something or someone while flying? Maybe he was engaged in deep conversation with the female pilot and forgot what he was doing? Why didn't either pilot not respond immediately to the audio and physical warnings that may have made a difference? It's like both pilots were very distracted and caught up in a stupor. Maybe engaged in a physical relationship situation when they should have been flying the plane safely. That's my best guess. Something distracted the two of them to the dangerous degree of not being in their right minds at the most crucial timeline when flying the aircraft. 😢
@@jacquelineoutlaw3252 You can think what you like, but the phenomenon I described is real, and it's a risk among pilots who change seats. It causes confusion when using the opposite hand. Muscle memory works that way. From the captain's seat, the flaps are farther away than the condition levers. From the FO's seat, it's the opposite - the flap lever is closer. People have died because of that type of error. It's a known phenomenon in aviation. Difficulties like this are apparent to anyone from the UK who has had to drive a car in the US, and to American drivers who have driven in the UK, particularly using a manual transmission. It requires careful attention at all times to do relatively mundane tasks, but the training captain has a high workload already during this phase of flight. Your ideas would most likely have been apparent from the CVR analysis. Drug use is always checked after a crash, either in the blood of the dead crew members or in specimens from those who survive. They most likely didn't respond to the warnings because they didn't realize what was happening. With flaps full, the stall speed is lower, so at the airspeed at which the upset happened, they were probably not expecting to stall, and not expecting the need to recover from the approach to stall. (Stalls are very abrupt in modern aircraft, and there is little margin for error.) Pilots sometimes get confused in situations like that. They might not immediately believe the warnings, and they don't respond immediately. That has also killed many people. The trainee captain would not necessarily question what the training captain has done. It might have been her first assumption to assume her teacher had done the correct thing. It takes a moment to realize something like that, but things happen so fast on approach, there's little time for that sort of hesitation. There is no need to come up with novel narratives like the secrets of their relationship or drug use. There are enough simple and common errors to explain what probably happened.
Pilot Error No Doubt !!
Brilliant video Mike, really Impressive 👏👏
Many thanks!
I was wondering how it can be technical or mechanical error as long as the plane was flying okay. But you narrated so good. The display you projected about each errors are so well done. Thank you for providing such great video.
Its a pleasure. Glad you liked it. 😊
please make something like this for another aviation accident.. 🖒🖒
If there is good interest in this video I will be making more.
We need an AI assistant for pilots, which should guide the pilots and takeover when needed, especially after a stale warning.
AI which shouts outs of the potential problem precisely
Identifying and calling out a problem should be enough. Taking over controls from the pilots could just as well lead to crashes, as there have already been numerous instances of crashes or near crashes caused by critical errors in the flight computer. I just watched another video explaining how cosmic rays can cause soft errors in computers. One example given was how an Airbus flight suddenly pitched down hard into a steep nosedive because a single radiation particle flipped a bit in the flight computer which caused the autopilot to read the recorded altitude as attack angle. This made the Autopilot attempt to crazy overcorrect a nonexistent stall which resulted in hundreds of passengers and crew being injured, mostly from slamming their heads into the top of the plane. Now imagine if a similar instance occurred but instead an AI algorithm assumed the pilots were responsible for the error and took control of the aircraft, locking the pilots out while sending the plane in a vertical dive thinking it was doing the right thing to save the aircraft...
@@Mika-ph6ku True, I was about to mention that. Autopilot is a critical hard real time system, We can enhance its security and safety, by replicating the sensors/etc which will prevent one faulty sensor from making the final decision, with multiple flight computers receiving and evaluating the same inputs, and then we can consider the autopilot malfunction/unsafe if any flight computer computed a different result.
I learnt a lot from this video, thank you. So sad for the lives lost 😢
Was waiting for this video since I saw your comment on the eyewitness video. Unbelievable how it happened. I still want to believe that there was technical error and CVR will record the difference between pulling the flap Vs condition lever.
The cockpit voice recorder should reveal much more. Because it does not make any sense
My best guess since I watch MP debrief is both human error and mechanical problems. The pilot is reported to have CRM problem and was distracted easily while the aircraft has an ATPSC issue. I'd say these factors literally melted Dr Reason's Swiss Cheese model into lasagna. RIP to those who had it.
I just don’t get this. Pilot flying calls for flaps, condition lever is moved instead. A little while later flaps are selected, again, without being called. So two actions for the same flap position. Wouldn’t you immediately think heck, what did I select the first time, did I move the condition lever? It just defies belief that the pilot monitoring wouldn’t look down at the throttle quadrant and confirm his actions. Just bizarre.
It defies belief. Such a basic egregious and deadly error. Engine torque on both gauges showing zero and they A. don't realize props on feather or B. go to immediate forced landing on the old runway straight ahead and below. So many other errors too and as you say on discovering flaps weren't fully down this was not called. Terrible communication between pilots. Bizarre! The cockpit voice recording will give much more insight and understanding but so far nothing has been released.
@@Mike-Bell this can happen.. Because of the heavy workload and critical stage. I'm not explaining the wrong lever movement but your post. During this stage you're fully concentrating on configuring the aircraft and landing..ie looking out the window. Could they have noticed the sound of the engine winding down. Most probably no.. Because they were slowing down and already at a low power setting. Should they have noticed the engine indications.. maybe but they're looking out the window. Why didn't they land at the runway in front of them. In heavier airplanes it takes time to lose airspeed.. Call it inertia. That's why they didn't realize they had loss of power until too late. Very busy cockpit.. Flying a 180 turn.. Configuring and also setting up for a landing. It's very difficult coming up with an explanation for the incorrect lever selection, but either pilot should have diagnosed the decreasing airspeed much sooner.
@@Bren39 I never heard of such a accident. For dealing with the high workload there are two pilots in the cockpit. And one of them has to MONITOR and not to fly.
Outstanding video and explanation. It is hard to understand how such a mistake was made. Possibly an audio warning should be installed to warn when props are put into the feathered position?
Its amazing how we can reverse engineer an accident via animations, it really provides a much better veiw of what happened. Thank you for your work sir!!
Primo animation and explanation. May those poor souls in the crash rest in peace
One of the best aviation crash videos you complimented theflightchannel well on this but with unique detail. Please make more
Wow thanks. Aircrash illustrating and explanations do seem like a great topic for me to pursue so yes more to come.
i hv to say it couldnt hv been explained more clearly. great work. thanks.
You are most welcome
Quality graphics and really well explained. Earned a follow.
OMG the animation and everything else is SO good!
Excellent video with animation and explanation. Best I've seen so far. 🙏 RIP
Much appreciated!
I am not from aviation community but because of your simplist explanation and animation i was able to understand what happend during the tradegy 😢, Superier investigative content than news channels
Thanks for the gripping visuals👍🏻
Thank you for this excellent informative videos. Appreciate your effort! Heartfelt condolences to demised soul. 🙏