How Pulling The Wrong Lever Caused Nepal's Worst Crash In 30 Years | Yeti Airlines 691
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- Опубликовано: 1 янв 2024
- This is the story of Yeti flight 691. On the 15th of January 2023 the pilots of an ATR 72 tail number 9N-ANC of Yeti Airlines were having a busy morning, they were constantly shuttling the ATR 72 between the airports of Kathmandu and Pokhara. The thing about flight 691 was that it had two captains on board, the pilot in the left hand seat was being familiarised with the pokhara airport. the pilot flying and the pilot in the right hand seat was the pilot monitoring, who was the instructor. Now the thing is that the airport at Pokara was quite new, the old airport was very small and now a new international airport had been built in the vicinity and pilots were still learning all the new procedures for the new airport. So with that on that fateful day, they set off from kathmandu in the ATR 72 with 68 passengers and 4 crew members on board. The plane took off and everything was normal the weather was good, soo good that they were in visual conditions all the way to their destination and nothing appeared to be wrong. As flight 691 got closer to the airport of pokhara they got in touch with air traffic control and dlight 691 was assigned runway 30 for the landing. Now we dont know why but later on in the flight they asked for that to be changed to runway 12. They had already landed on runway 30 earlier on in the day and maybe they wanted to try landing on runway 30 so that the pilot flying could get some experience with both runways. We dont know why they made the change that they did, if you have any idea as to why they made the change that they did then please do let me know in the comments below.
Then at 10:51 am local time the plane was at 6500 feet and they joined the pattern for runway 12 just north of the runway, ATC at this point was able to visually identify the plane and from their point everything looked good. As flight 691 flew the pattern, the pilots slowed the plane down and brought out the flaps to 15 degrees and 46 seconds later they dropped the gear. They were getting this plane ready to land. In the cabin people were excited about the landing with many of them looking out the window eager to capture a view of the city of Pokhara.
At this point the plane was just 721 off of the ground and were on the downwind leg . The pilot flying called out flaps 30 and the pilot monitoring just replied with “flaps 30 continue descent”. This is when the problems started to show up for flight 691, The propeller rotation speed of both engines started to fall and then before you knew it they were less than 25%, we dont know how low they actually went because the flight data recorder does not record values below 25%. At the same time the torque being produced by the engines also fell to 0%. At 10:56 am and 36 seconds, a solitary little chime was heard in the cockpit, this was the master caution chime, but the pilots were just wrapping up the before-landing checklist at the time and didnt really notice the warning. As they made the left turn to get on to the base leg for the approach, that is they were now flying at a 90 degree angle to the runway and they still needed one final turn to line up with the runway , the engines had both gone into flight idle mode. Then in the cockpit the automated call out for 500 feet was made and it was followed up with the sound of a click meaning that someone in the cockpit silenced the master caution warning. The plane was then put into a left turn of 30 degrees, the pilot flying felt that something was wrong, so she asked the pilot monitoring, who was the more experienced pilot in this case if the left turn should be continued, he asked her to keep turning. Once the turn was done the pilot flying felt that things were still not right and asked the pilot monitoring if the approach should be continued. He didn't feel like it should be and asked asked the pilot flying to add more power. But this didnt fix the problem with flight 691. On the ground the controller cleared flight 691 for the landing, 
Наука
Guys just heard about JAL 516, Do you want me to make a video about that?
Yes please
I imagine it's gonna be more of a "what we know" video rather than your regular one?
Yep!
Yes it’s jal 516
It’s probably a error on the smaller plane that taxied out to the runway and nobody’s noticed, possibly heard something wrong and thought to taxi.
It simultaneously feel as if this crash had happened yesterday and a decade ago. Today's JAL accident makes this one feel so distant.
This one happened 15th jan last year
What really makes this doubly triply devastating is that the pilot flying lost her husband in a plane crash, which inspired her to become a pilot herself, and she met the same fate her spouse did
At least they’re together now 😢
The word for that is tragedy
@Pwnulolumad that's many tragedy(s) x (?)
Oh that’s this one
@@desdicadoricikr i was thinking that too
In this crash, one of the passengers recorded a video from inside the cabin as it happened. It appeared that he was just posting a live video of the landing until things went horribly wrong
@@geraldh.8047thanks for including the link
@@geraldh.8047 Thank you for adding the link. In the past, I have had problems with RUclips shadow-blocking whenever I put links in comments
Those who want to can find that video on youtube.
Yeah, I remember that, he was livestreaming the landing. I watched it once, back then, not ever watching it again, it was truly horrifying.
No reason to be bitchy
Man, if i were the pilot flying I would've been PISSED to find out why i died
If you were the spirit of the pilot flying you mean..
Lmao sorry I have to laugh at this one
I wonder if the pilot monitoring was not usually in the right-hand seat, and just used 'memory' to pull the 'further set of levers' from when he was in the left-hand seat (Flap control) but in the right seat that becomes the pitch control (feather)...
The only logical explanation i've read. Thanks.
Why there's still no voice assist whenever such a change is made in the cockpit, like Flaps configured, or Altitude set? This would help the crew to validate the changes. This can be silenced during heavy workloads, optionally. This can be done in a soothing voice so that the crew doesn't feel annoyed.
I've seen a few on this. Training /Senior Captain Kamala KC is 100% responsible to my mind. Despite the difference in how the levers are moved, he moves the wrong TWO levers instead of the correct ONE. Doesn't verify the position. The PF twice tells him about the lack of power. He does nothing and still doesn't verify his lever positions. He does move to "flaps 30" but again doesn't look at the console or prop positions (apparently)
They had good weather, good ATC, a good airplane, plenty of time. The workload was no more than there would have been for any other landing.
For me, he completely failed in his responsibilities as a Pilot.
I usually avoid "zero sympathy" conclusions but this seems unavoidable.
She either didn't know what feathering meant Or she didn't know about that lever in this plane (he mentioned it was a new plane)? If it was the second case, there was a chance she might have picked up on the hints...
Stop hating on her, instead hate the system, ask how she became a Senior?
@@sriracha9729You mean "he". Kamal KC is the one being referred to here - the "she" was the PF, training to be captain.
But I agree with your last statement. Assigning blame to an individual (especially one who is deceased) does nothing to improve aviation safety going forward. How was it possible that this was overlooked? What aspect of training could be improved to reduce the likelihood of it happening again?
@@cooperised I meant the instructor. Yeah, just have a difficult test or something, both theory and practical.
As a pilot or co pilot they should k ow every inch of the controls of that plane. In the same way a train driver should know the controls of their train.
They were both captains? He says it at the beginning of the video. He was monitoring as she had very little experience on the new runway/airport. Was gross negligence by the male pilot in my opinion. A major one at that.
Oh, I remember seeing this on the news, and reading all the speculation about what might have caused it. I don't think anyone had "accidentally reduced rpm instead of extending flaps" on their bingo card. Thanks for covering this one!
I remember this incident very well mainly because of the two videos that went viral on twitter. One of which was footage from inside the cabin and the other from an eye-witness on the ground.
This isn't the first time something like this has happened in a high wing turboprop.
Never change anything in the cockpit without a visual confirmation that the right control is the one in your grasp!! This change was ignored by the crew when the master caution warning came on and it was silenced by another ignorant flight crewmember. The pilot flying stalled the wing in a 30 degree bank. Airspeed is clearly displayed because speed is life and lift. They lost both.
They must have dropped below 1.3 VSO while banking.
There's a number of aircraft accidents that are associated with pilots not bothering to look at what lever or button they are pressing or not looking at their instruments to see if their action does what they expect it to do. Or even when things go wrong, look at their instruments for clues as to what went wrong.
Still very much subscribed and glad to see you back. Glad that things have gotten less busy for you!
Dude I saw a video of a passenger live streaming the landing, you can see him smiling and then realizing what was about to happen. He screamed twice, then the crash happened, and its all super loud but dark because I guess the phone was flying everywhere, and then you ca only see debris and flames. Horrific
I'm glad to see you uploading again. I was worried when you stopped posting for a while there.
What I question is how experiment pilots can pull a lever, flip a switch, or whatever, and completely fail to associate that action with the fact that something completely different happening as a result.
You pull the (not) flaps lever, flaps don't deploy, and you lose power. How is the first thought anything but, "What did I just do?"
You would think one of the pilots at least would have heard the difference in engine/prop sounds.
I’ve never flown a plane, but I was going to say the same thing. Surely there would be a noticeable difference in the engine sound?
Yeah, the headset noise isolation is good, but not _that_ good.
Thanks for the upload bro! Was really looking forward to somebody doing a video on this.
so happy you're back!
and pumping out the videos!
Thank you for another amazing story
Could a pilot please tell me why the feathering lever is in that location at all? Is it common to adjust the feathering in a normal flight? If so I'd be interested to know what it's used for. If not, then a lever with such dier ramifications should probably be placed somewhere more secluded, surely?
Paging @74gear
To me it feels like letting the airspeed decay, despite a lack of power, shows that they weren't flying the airplane. They weren't following the basic principles of flight. They didn't appear to be aware of the aerodynamic characteristics of their aircraft. Which leads me to think that poor training is probably a big factor.
I still get your notifications, and mightily glad I am. Cheers 🍻!
Still auto subscribed but I really haven’t seen many new videos. I like your channel bc they aren’t really long and you get a lot of info in this short time😊
Fantastic video thank you!
I was born and raised in Pokhara and moved to Seattle in 1997. This flight is a sad incident that could have been easily avoided. Nepali pilots are extremely competent and able to fly in one of the world's most difficult terrains. It is hard to believe he made such a simple mistake. At the end of the day we are humans.
"This"🤗
Great job as usual 👌🏾👏🏾👏🏾👏🏾👏🏾👏🏾
Why don't they have a audio warning when the auto feather is engaged out the speaker? A single "Auto Feather" should sound. I always wondered being a science fiction geek why planes don't do more voice audio warnings? Will A.I. be introduced into aircraft as a advisory warning system only one day?
Looks like AI will be integrated to Monitor the Pilots…
One reason is not wanting to add more lights and bells to an already busy environment. Another, probably bigger reason is how much trouble (expense) it is to incorporate a new feature like that. Testing, evaluation, updating manuals and procedures, training....
The only major crash of 2023 - travelling by air has become incredibly safe nowadays //
A piece of an airplane flew off last January 7. It was Alaska Airlines. There is no such thing as safe as accidents can happen anytime🤷♀️
@dannielynsalison2979 it's safest way of transport. Almost a billion passengers last year and more people die on their way to the airport than flying
@@juanda680 People should be afraid leaving the plane rather than while boarding //
@@dannielynsalison2979lmao be afraid when you step in your car you can die 1000x times more likely than getting on a plane.
I just want to thank you for doing these informative videos without any music. I really wish more and more YT hosts would do as you do. If you're speaking, then no music should be playing.
Oh, I am happy to report that my sub is still active. No unsubbing taking place.
I kind of disagree on the music thing. Not sure if it's just my computer, but I find on a lot of YT videos that the audio cuts out completely during pauses in speech. There's a slight pause before the audio starts up again, so it's like the audio is muted and the speaker starts talking again slightly before unmuting. Quiet background music prevents it from happening.
I had a lot of trouble understanding the narration. The microphone sounded muffled to me. A lot of words I missed completely. I guess we’re all different. Nice video regardless. 🫡
I am beginning to wonder, if it might have played a rule that de FO was also a captain. Normally as a captain you sit in the left seat of course, and when you do that for some time, you are used to that seat and the positions of buttons and levers from that position. You can find them (almost) blindly. However now that captain sat on the right seat, in which he might have been sitting for the last time many years ago. He was used to reach out quite far to move the flap lever, however from the right seat it is the very first lever to his left. It is just a thought. How do you think of this?
The legend dropped a video
Mine looks good still subscribed and notifications are on 😊
Great video again my friend .. love to watch .. I’m only a Sheila but love commercial flight watching ! 👀.. take care and have a great day 🎉🎉❤❤
Im still subscribed but the bell wasnt activated anymore. Happens again and again with other channels. Pretty annoying that it's not getting fixed. Well done investigation and a happy new year.
This crash video was a viral video here in the Indian Subcontinent. Just thanks for for this detailed analysis of the actual reasons behind the crash.
As you suggested, landing runway 12 was probably a familiarization decision.
What was the wind direction at the destination aerodrome? Planes will not land with a tailwind unless they have no other choice.
With excellent visual conditions and the captain familiarising herself with the new airport, just wanting to get some experience with the different runways sounds like a good theory for why they changed. Seems like the perfect time.
I am curious about potential issues a function to prevent this mishap could cause.
Panic-slamming the throttle on both engines to full could have a feature to un-feather the propellers.
but there are surely some problems it would cause, if just stickier levers or mechanical complexity.
I'm not a specialist, but I can foresee at least one problem with such implementation. Say you have an engine failure, so you need to feather the damaged engine and go for an emergency landing. While in landing configuration (low altitude, low speed, flaps extended, landing gear down, so lots of drag), you have to do an escape maneuver (go around, wind shear, or TCAS), and reach for both throttles by mistake. If the damaged one becomes automatically unfeathered, the drag induced by it would add to all the drag already present and asymmetric thrust and could bring the plane down in seconds.
@rodolfoptx If the engine has had its prop feathered due to engine failure, the engine has also been completely shut down. You can move the prop leaver all day long and nothing will happen.
@@stevewhite3424 What's the point of feathering then? (my knowledge is limited to a couple air crash videos, so you might have to explain more 😳)
@@stevewhite3424 Of course, the engine won't do anything if it's shut down, but if the prop is unfeathered automatically by moving the thrust lever, as the main comment proposed, it would add back that drag you were trying to avoid when you feathered it in the first place.
@@sriracha9729 Feathering a prop means changing the pitch angle of the blades to a neutral position, close to 90º: they won't make any thrust (speed you up) with the engine running, but also won't induce drag (slow you down) with the engine stopped. A great way to understand this is to put your hand out of a car window while traveling at highway speeds: when your palm is against the wind, you'll feel some pressure against it (unfeathered prop), but when you turn your hand sideways, that pressure is greatly reduced and you'll even feel some lift instead (feathered prop).
Im subscribed Im not sure why your not showing in my recommendations new vedios usually show.
Great video, why wasn't there a warning to indicate the propeller was feathered? This looks like a basic thing to have to enable the pilots to troubleshoot
I stopped seeing these in the feed, glad to see enough people fixed their sub so I got notified.
When i heard "her" 🥺 thanks for the upload
Thanks for announcement at beginning I had been unsubbed! What the hell?! Man, being a creator would drive me nuts. Well done for sticking with it and enduring the BS. It’s no joke.
How could this happen? I'm genuinely curious. RUclips doesn't automatically unsubscribe people from things?
subbed nice channel
I'm not sure if I agree that "taking the wrong lever" is unheard of... I was flying gliders for 15 years and I have seen people mistakingly pulling flaps instead of airbrakes. One of those occasions resulted in a crashed glider at the end of the runway... No injuries luckily...
I have also seen people flying around with gear down just to don't gear up on the downwind...
I can see this as both scary because it’s so simple of a mistake with such drastic consequences, and yet also as reassuring, because when you explain it it sounds like it’s almost unheard of because it’s like mistaking pulling the emergency brake with putting the car into reverse or something. It’s a minor mistake with huge implications, sure. But it’s just not a mistake drivers normally struggle with each time they drive a car. Thanks for the clear and un opinionated breakdown.
My prayers are with all these families right now. ❤
u feelin okay bro?
Wow this was quick. The final report for this accident was only released last week.
I wanted to pull a Kronk lever gag here, but as the video went on, it just got more depressing
Was still subscribed but notifications were off. I think I had them on before but unfortunately, don't remember.
this guy sounds like he's recording this as quietly as possible, like he's trying not to wake up his mom or something
yes please do a video about jal 516.
🇸🇪🇸🇪🇸🇪👍👍👍👍👍👍👍
Requesting video on 2020 Coulson Aviation Lockheed C-130 Hercules crash, love your work :3
2020 Coulson Aviation Lockheed C-130 Hercules crash
2020 Coulson Aviation Lockheed C-130 Hercules crash
How can pilot get the license then if they mistook that toggle?
Nice presentation @MiniAirCrashInvestigation. Unfortunate incident , pilots could have been more cautious.
Watching from 1 km away from pokhara international airport
Still Subscribed.
What could have saved the airplane, if the pilot looked at the flap position.
Which ironically was the job of the Pilot Not Flying...the Instructor. Who probably has confirmation bias and did take the concern of the Pilot Flying.
At 5:18, the video shows what MAY BE a body. Maybe not, but it's possible.
It is, Infact i see 2-3 bodies.
If this was on Mayday soon, I bet the episode would be titled "WRONG LEVER".
Oh my god
Is that a burnt body at 5:26?
I was not unsubscribed. In fact, I was never auto-unsubscribed for anything. I have only 36 channels subscribed and I don't use notifications. Maybe for some it auto-unsubscribed if they'd have many many more subscriptions. Or maybe it happens if one has many subscriptions, combined with your posting gap of nearly 3 months?
I don't know.
I noticed that you still were not able to fix your audio level? I always need to turn up the volume at your videos.
still here and notifications are active. for this video, can you even imagine how cuold someone move the incorrect lever? happened down here on LAPA's flight with a crew not fit to fly (or even drive)
Oh my goodness. The circumstances of LAPA Flight 3142 make me want to scream. Absolutely disgusting how the airline dispatched faulty aircraft and taught pilots to ignore warnings, on top of a flight crew that prioritized smoking and ranting over doing their dang jobs. How they were allowed to be within eleven miles of an airplane cockpit baffles me.
it sound familiar of similarly to two Taiwan planes crashes few years back
*2023 was a record year for flight safety. There were only 2 crashes in 2023.*
2 crashes in 2023? Total Bs
@@MisterKatz Yes it's true. Only 2 fatal accidents in 2023 in Commecial Aviation, not General Aviation. No fatal passenger jets crashes recorded in 2023 (not sure about Russia given the sanctions). The two crashes were both turboprop aircraft, Yeti Airlines in this video and Manaus Airlines in Brazil in September.
This was the only major one
There were 2 plane crashes in Brazil killing over 25 people in total, and a few other serious incidents like the firefighting 737 crashing in Australia, the ural airlines a320 ditching on a field, and a rogue pilot attempting to shut down the engines of a horizon air embraer mid flight
And 2024 two plane crashes within the second day of the year.
This is definitely not true. There were many crashes last year.
The L3 FA2100 FDR does not record that many parameters, not sure where you got your info for that… and since you said “only” 187, you’d be surprised then how many are actually required per federal regulations… 😅
Please remodel where these levers are so no one else get confused this is very scary
It seems like there should be an added safety feature present in this airplane when the propellers are feathered, whether on purpose or otherwise, there should be a flashing light on the instrument panel, informing the crew that the propellers are feathered just like the stick will shake when there is an impending stall going to occur in this situation described here propellers were feathered and there wasn’t enough time or thinking available for the pilots to diagnose that. It was a problem with the propeller being feathered and there by not having any thrust although if they had been thinking, they should’ve figured that out mentally but let’s assume that they were Stressed over how to land at this alternate runway andwere distracted from making an appropriate conclusion about the lack of power when they put the engines back to full power. A bright, red, blinking warning light should exist when the propellers are feathered.
As experienced as that training captain was only for this to happen. The lever is shaped like an airfoil. How couldn't it be felt?
I live in Nepal
He made the change because he want’s to land on a new runway
WyngX posted a video about this explaining why the runway was chosen.
Thanks for the intro I was also Auto unsubscribed!?
That’s what I’m talking about!
One thing is it is not safe to hand over control that close to Landing in that far into the landing process
Is there any suggestion that the monitoring pilot feathered the engines deliberately, suicidal?
I imagine if he was suicidal he could have just nosed it into the ground. Relying on your copilot not noticing the feathered props seems pretty unlikely.
Can't remember if I was subscribed or not, but I've watched your vids before so I just subbed when you talked about the auto-unsubscribe thing.. Not saying it was intentional, but it'd be a pretty sweet little tactic for getting extra subs if it was!).. 😉
I thought you were about to freestyle there for a minute.
"They set out from Kathmandu"
"In the A.T. R. seventy-two"
"With sixty-eight passengers ... and FOUR CREW!"
Highly odd situation. The difference in shape of controlls is just to prevent this.
To bad....
Nothing like this should happen because both pilots are required to confirm first before actuating any such lever
Sad this had happend more than once…
Well why the f does RUclips auto-unsubscribe people? YT seems to be mistreating their content creators more & more all the time 😠
Sounds almost like another problem done to another ATR 72..TransAsia Airways Flight 235..except Flight 235 was just taking off
Pull the lever, Kronk.
Thanks for the heads up about being auto unsubscribed. I checked and sure enough I'd been unsubscribed.
Sounds very similar to that Transasia captain who pulled the wrong lever in his plane, causing the plane to hit a taxi and crash into a river.
Normally a plane can glide down to the runway without engine considering the altitude and distance. Wondering why this plane just fell right down.
They turned too steeply without any power and it stalled.
Rip
And this is exactly why I can't understand why the fuck isn't there a cockpit AI monitoring what is being done, and while NEVER interfering with actual actions, nonetheless calling out "hey, I just noticed (you idiots) feathered the props (for no good reason) - you sure you wanted to DO THAT...? Like, on purpose? For sure? Are you certain...?
Called a cockpit for a reason
Wrong lever, Kronk!
Woaw. I just checked. RUclips automatically unsubscribed me. Weird!
Even if they were landing to old aiport , they could have been saved.
Yeah... I'm going to call bs on a 721' AGL downwind in a commercial airliner 2:38
I was automatically unsubscribed but I’ve re-subscribed ❤
BIT - Built-in In Test (or Built-in In self Test) is pronounced the same as a single bit (i.e. a one or a zero) of data and not like "A byte of data" or "I took a bite out of an apple".
Its called BITE not BIT,
It's 'Built In Test *Equipment*... Hence 'BITE'...
@@Chris-hx3om Ahhh, that makes sense now - forgive me, I'm a 55yo stroke-ridden software engineer 😉
Yet another crash caused by the inability to actually FLY an aircraft. The change in tone of the engines SHOULD have told both what had happened
Voice goes quiet at the end of sentences - sounds like ' mmphhttmmppttrr '
Pilot error 😢