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The Plane That Was Ripped Apart | Inter-Canadien Flight 1678 

Mini Air Crash Investigation
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ATR Image: christian hanuise - Gallery page www.jetphotos.... Photo cdn.jetphotos....
Equation Image: Public Domain
Corrosion Image: Cafe Nervosa Derek Mawhinney, Corrosion Engineer - Own work
This is the story of inter canadien flight flight 1678. On the 13th of march 1994 an ATR 42 was to fly from Val D’or airport in quebec to Dorval airport also in quebec. At about 10 am the ATR 42 took off from runway 18. As the plane climbed the first officer was the one at the controls, theyd been asked to climb to 21000 feet by ATC. The plane climbed as the canadian countryside stretched out in front of them. This went on for some time, suddenly as the plane climbed through 17,000 feet an explosion rocked the ATR 42. The plane rocked from side to side in the the air in the cabin was sucked out as it depressurized in a matter of seconds. The pilots immediately stopped climbing and started a descent. It looked like the right hand engine had failed so as the plane descended down to a safer altitude the pilots started work on the the single engine failure checklist.
The first officer contacted Montreal area control and told them about their situation. they cleared flight 1678 down to 11,000 feet. In the cockpit the pilots were worried about a potential inflight fire on the right hand engine as they observed fuel leaking from the engine. The first officer pulled the fire handle and declared an emergency with ATC. 7 minutes had passed since an explosion rocked flight 1678, they were still airborne and things were under control. The first officer decided to go into the cabin and survey to see what had happened. The first officer could see a gash on the right hand side of the plane below a window seat. To their shock they noticed that the frame of the seat itself had been sliced through by something. Once back in the cockpit the pilots had some tough decisions to make. Obviously something had gone catastrophically wrong and the fuselage itself sustained a lot of damage, but they couldnt judge the full extent of the damage from inside the cabin, the damage on the outside could be a lot bigger than the tiny gash that they could see. As they didnt know how badly their plane was damaged they tried to turn as little as possible to avoid stressing the aircraft too much. If the crack grew any further well that could end very badly. Minimising further damage was of paramount importance as they were still about half an hour away from all of their diversion airports. For example mirabel was 39 minutes away, val d'or was 36 minutes away and dor val was 44 minutes away. They opted to continue on to dorval. Its not explicitly stated in the report but i think they opted to continue onto dorval because thats the flight path that required the fewest amount of turns, think about it to get back to val d’or theyd need to do a 180 and they really didn't wanna do that.
At 10:28 am the plane cautiously started a descent to 9000 feet, it stayed there till it entered the Montreal terminal zone and then after that it continued its descent, on their way down the pilots requested the airport to have emergency vehicles on standby just in case something went wrong. Fight 1678 lined up with runway 06L, I imagine that that was stressful, with them just hoping that their plane held it together for a few more minutes till they reached the runway. Thankfully it did at 11:16 am flight 1678 touched down safely and all onboard were okay.
Once on the ground the pilots got a first hand look at what had happened. The right hand propellor was missing One of the blades on the right hand propeller had broken off and the blade went right through the fuselage, it was so close that it went through the cabin and cut through a seat that was unoccupied, thank god for that. The seat isnt the only think that was spared; they found two slightly bend hydraulic lines where the blade had gone through, had the

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26 авг 2024

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Комментарии : 416   
@egvijayanand
@egvijayanand 2 года назад
Kudos to those mathematicians who figured out the precise location of the fractured metal pieces in both the scenarios. And let's take a moment to appreciate this flight crew for their commendable action in bringing the airplane safely to the ground.
@abebuckingham8198
@abebuckingham8198 2 года назад
I'm a math guy and the technique they use to find stuff is really cool. They basically treat it like a scientific profess where they incorporate new information as it's acquired to improve their probabilistic model and narrow down the search area as they go. It's relatively simple mathematically but the fact that it works so often blows my mind.
@dimitarivanov3817
@dimitarivanov3817 2 года назад
WOW. Just WOW. You are definitely a storyteller. Words can not describe the accuracy of the mathematicians. I am really happy with the way they handled everything. Absolutely blown away by this story.
@jaggerdfletcher1618
@jaggerdfletcher1618 2 года назад
Bruh he can't even spell Canadian correctly...
@dimitarivanov3817
@dimitarivanov3817 2 года назад
@@jaggerdfletcher1618He made a typo. Is that so much trouble for you?
@suresh1957
@suresh1957 2 года назад
@@dimitarivanov3817 Very well said Sir. Easier to find faults than to create something like this wonderful analysis
@onlyme112
@onlyme112 2 года назад
@@suresh1957 Indeed. "Pay no attention to what the critics say. A statue has never been erected in honor of a critic." -- Finnish composer Jean Sibelius
@MiniAirCrashInvestigation
@MiniAirCrashInvestigation 2 года назад
Dude the airline is literally called inter canadien That’s how they chose to spell their name what can I do? 🤷‍♂️
@FlywithMagnar
@FlywithMagnar 2 года назад
Indeed a very good presentation. Just a minor correction: The dent hydraulic lines have nothing to do with the controllability of the aircraft. The primary flight controls of the ATR are manual. The hydraulic lines are for the landing gear, the the landing gear extension system has a manual backup.
@MiniAirCrashInvestigation
@MiniAirCrashInvestigation 2 года назад
Good catch! My bad!
@Jfjcjfjfjf
@Jfjcjfjfjf 2 года назад
English please
@tabittheha
@tabittheha 2 года назад
@@Jfjcjfjfjf even if the hydraulic line were cut by the propellor, the pilots would still be able to control the plane.
@090giver090
@090giver090 2 года назад
@@tabittheha But belly landing the plane with compromised structure would not be a pleasant experience...
@tabittheha
@tabittheha 2 года назад
@@090giver090 oh, sorry I’m not trying to make my own point! I’m just saying what the other poster said in shorter terms bc Simplex said “English please”
@thomaswest5931
@thomaswest5931 2 года назад
Metal fatigue on my Cessna 172 prop caused an inflight loss of a tip. The fracture was probably the result of a small stone ding about 3 inches inboard of the tip when the prior owner hit a snow bank under power. It felt like the engine was about to rip off the mounts. Quickly shut down and dead sticked it into a small airport that happened to be close by. Very “exciting” experience. Metal fatigue is a major issue in all machinery. Keep vigilant!
@stevengill1736
@stevengill1736 2 года назад
Yikes! Glad it wasn't more serious.
@stanislavkostarnov2157
@stanislavkostarnov2157 2 года назад
hopefully you got all the gears or whatever other internal components thoroughly checked too... nasty issues from such overstress events can tend to crop up hundreds of hours later.
@That_Freedom_Guy
@That_Freedom_Guy 2 года назад
Nothing like the threat of death to make us sit up straight and take notice! I'm glad you're okay too. 👍
@thomaswest5931
@thomaswest5931 2 года назад
@@stanislavkostarnov2157 True. Did a tear down and some inspection but ended up getting a new engine. LYC-360
@sixstringedthing
@sixstringedthing 2 года назад
I bet that beer tasted pretty good after you got her down safely. Good call replacing the engine. Wouldn't want to have it seize and need to do another dead-stick landing. Better safe than sorry eh, especially with aircraft.
@crai-crai
@crai-crai 2 года назад
"Where's the propeller now?" "Canada" Mathematician: "I can figure this out"
@jiks270
@jiks270 2 года назад
Just wanted to say what a great job you do on these investigations. Your knowledge and emotional involvement shine through while you avoid the classic pitfalls of the videos becoming dry or overly-dramatic. Well done and thanks for the great content!
@MiniAirCrashInvestigation
@MiniAirCrashInvestigation 2 года назад
Thank you!
@rolandguiscard
@rolandguiscard 2 года назад
I think we should take the time to thank the hard-working engineers and guys on the assembly line who built a plane so tough that it could survive a propeller blade slicing into it at 19,000 feet. A lot of guys and their factory really took the time to do the job right, and thanks to that, nobody had to die in this freak accident This is why the guys who put stuff together like this need to be well trained, healthy, and well compensated. Part somebody messes up because they are tired or sick or hungry could turn something like this into a mass casualty event.
@adamfox1669
@adamfox1669 2 года назад
So true. Great point
@daviddunsmore103
@daviddunsmore103 2 года назад
Given all the quality control issues that Boeing has been having lately, they'd do well to heed your excellent and timeless advice! 🤔
@ashkebora7262
@ashkebora7262 2 года назад
@@daviddunsmore103 Naaahhh, profits are more important to the suits. Cover up any shortcomings.
@higueraft571
@higueraft571 2 года назад
@@daviddunsmore103 Honestly, i'd ask SpaceX to build your plane at this point...
@williamgreene4834
@williamgreene4834 2 года назад
@@higueraft571 Yes, SpaceX has a culture of actively seeking out potential problems and fixing them. Any employee can go straight to the COO or CEO if they think their problem isn't being addressed. They also have a " no ahole" clause written into their employee contract. I think that would be a great addition to any company's employment contract. Yes I am a fan-boy don't sue me. :)
@briant7265
@briant7265 2 года назад
This video is a prime example of all the things you do right. Length, style, insight! The information on what improvements were made based on the incident and investigation really sets you above the pack.
@davidjb3671
@davidjb3671 2 года назад
I love flying in those ATR72's, but I always make a point of NOT sitting in the row in-line with the props or the one in front 😉
@kdrapertrucker
@kdrapertrucker 2 года назад
Don't fly on them in cold weather, their driving systems suck.
@shreddder999
@shreddder999 2 года назад
And don't order wine during the flight.
@flycubfly
@flycubfly 2 года назад
The prop arc is one thing . Sitting two seats back and being in line with the compressor wheels is just as if not more dangerous than the prop.
@Milesco
@Milesco 2 года назад
@@kdrapertrucker _"Don't fly on them in cold weather, their driving systems suck."_ Did you mean their *deicing* systems? If so, that's true. Their deicing systems are notoriously -- fatally -- ineffective.
@blackandgold676
@blackandgold676 2 года назад
@@shreddder999 Unless it's got a synthetic cork or screw-top.
@danh6720
@danh6720 2 года назад
Fantastic! Road salt is prohibited from use at airports for this reason, and chlorinated chemicals in general are generally unwelcome. Even A-B-C fire extinguishers are prohibited due to corrosive effects on aluminum. Only B-C fire extinguishers are permitted in the AOA. I love videos like this because I teach many people how to operate safely in an airfield environment and references like this help me explain how small things can have an effect or why rules that may seem over-burdensome exist. It really helps when there is a rule that needs to be complied with if I have a concrete incident to point to that reinforces the importance.
@mikekeenan8450
@mikekeenan8450 2 года назад
I gather there are also severe restrictions on shipping gallium by air, because if it melted (I believe it melts at about 30 °C, so sitting on the tarmac on a hot day could do the job) and leaked from its container, it could alloy with the aluminum of the fuselage skin and create a weak spot.
@josephmassaro
@josephmassaro 2 года назад
Mini Air Crash: "Guys, I can't find my wallet. Can you help?" Mathematicians: "We're mathematicians...not miracle workers."
@Maciej-Komosinski
@Maciej-Komosinski 2 года назад
Mathematicians: at what location, altitude and direction did you throw your wallet?
@stevengill1736
@stevengill1736 2 года назад
Statisticians: "There's a 30% probability of it being within a mile of your present location, a 15% probability of it being in your pants pocket in the dirty laundry basket, and a 65% probability of it being between the couch cushions where you took a nap yesterday afternoon" ;*p
@josephmassaro
@josephmassaro 2 года назад
@@stevengill1736 "73.6% of all statistics are made up."
@stevengill1736
@stevengill1736 2 года назад
@@josephmassaro LOL
@trent3872
@trent3872 2 года назад
I have this little card called a tile, it's the size of a credit card, if you lose your wallet you can use your phone to make an alarm go off. It's pretty cool. Also, if you lose your phone theres a button on the tile you press and your phones sounds off even if its turned off.
@TheFULLMETALCHEF
@TheFULLMETALCHEF 2 года назад
Great detective story on so many levels. really enjoy your sense of humor, too!
@sixstringedthing
@sixstringedthing 2 года назад
Finding that prop blade is like finding a needle in a haystack that's in a massive field full of haystacks. Amazing stuff, great video once again!
@thedevilinthecircuit1414
@thedevilinthecircuit1414 2 года назад
The premium quality of your presentations is unequalled anywhere. Fine work!
@FilosophicalPharmer
@FilosophicalPharmer 2 года назад
Thanks for giving mathematicians their due. Being taken for granted can add up!
@benjaminsagan5861
@benjaminsagan5861 2 года назад
I see whatcha did there.
@virginiaviola5097
@virginiaviola5097 2 года назад
Your narration makes watching these mini investigations a pleasure, and the content is always first class. Thank you
@hazevthewolf178
@hazevthewolf178 2 года назад
I love that your videos appear on Wednesday mornings, my time, at about 5 hours. This was really interesting and the fact that investigators were able to find that lost propeller is just another example of the unreasonable effectiveness of mathematics (math rules!). Mini Aircraft Investigation and Mentour are the only two channels about air crashes that I watch. BTW, one of your viewers turned me on to Mentour. These channels compliment each other in some sense. Both of you are gifted investigators and commentators, each with your own unique talents. Mentour satisfies my retired engineer's craving for technical details. You have the gift of breaking down complex scenarios in such a way that we non-pilot mortals can understand. Forgive me, if I'm being cheeky in saying this, but I'd love to watch a collaboration between the two of you discussing some major event.
@restojon1
@restojon1 2 года назад
May I give you a tip for another channel that, judging by your comment I think may be "up your street"? Have a look at the "Blancolirio" channel presented by Juan Browne. Factual aviation stories, well presented by a well qualified pilot. It's a great channel to learn from, too. All the best, safe travels 👍 ✈
@hazevthewolf178
@hazevthewolf178 2 года назад
@@restojon1 Thanks! I'll check it out.
@bikeny
@bikeny 2 года назад
And one more channel to check out if you wish: 74 Gear. From his 'about' page: "74 Gear / Pilot Kelsey, Boeing 747 Airline Pilot , All about aviation from passengers to pilots." And, yes, I, too, follow MAI and Mentour.
@yakacm
@yakacm 2 года назад
Those mathematicians were better detectives than Reddit and 4Chan combined.
@Relkond
@Relkond 2 года назад
I dunno.... 4chan does superpermutations better than mathematicians...
@swift8821
@swift8821 2 года назад
No shit Sherlock
@stevengill1736
@stevengill1736 2 года назад
I'm amazed, for sure. Corrosion is no fun on an aircraft, definitely!
@topiasr628
@topiasr628 2 года назад
@@Relkond I award you the best comment award 🏆 👏
@R2Bl3nd
@R2Bl3nd 2 года назад
What an insane chain of events!! Great storytelling, you summed up everything very well and kept it quite interesting.
@thatguyalex2835
@thatguyalex2835 2 года назад
There is actually a term that I learned a few days ago* for a chain of events that leads to a disaster: The Swiss Cheese Model of Accident Causation :) Whew, that's a long one. *From another comment made by a viewer on a different vid by Mini Air Crash Investigations. :) It is a theory that was discovered in the 1990s. It states that for a chain of events, where some go minor problems unnoticed, and lead to higher probabilities for problems to arise down the line (series of events lead to accident).
@briant7265
@briant7265 2 года назад
I had an old pickup throw a fan blade straight up through the hood on the freeway. That was scary. This is like ×1000 and in the air. Eeek!
@SeadogDriftwood
@SeadogDriftwood 2 года назад
Excellent narration as always! One minor quibble: "Quebec" ought to be pronounced either as "kuh-BECK", "kay-BECK" (which is the French-Canadian pronunciation), or "kwa-BECK", rather than "kyu". Also, as @MarcDennis and @dmav522 noted, "Val d'Or" (literally Golden Valley) is pronounced like "Val Door".
@jamesturner2126
@jamesturner2126 2 года назад
"Kwa-beck" is NewYorker/NewEnglander pronunciation
@peterjeffery8495
@peterjeffery8495 2 года назад
The subject of metal fatigue was the subject of 1948 book by Nevil Shute called No Highway In The Sky later made into a film starring Jimmy Stewart as an aeronautical engineer convinced that metal fatigue was going to cause catastrophic failure of an airframe during flight. Its an old relic of a movie that every aviation buff should see. Note that the late Mr. Stewart was a WW2 B17 pilot with 20 missions to his credit. He was eventually promoted to Lt General of the USAF Reserve. I hope all the channels viewers are wearing their red poppy's in recognition of Armistice/Remembrance day on Nov 11. Good video, well done!
@bigmikeh5827
@bigmikeh5827 2 года назад
Great presentation. While flying in helicopters in Hawaii a soldier in my unit had is M16 rifle fall out. A very serious issue for a fully automatic rifle that must be accounted for and secured. About 1500 soldiers were walking all over a very difficult part of the North Shore. One of the Lieutenants who was a math major got all the parameters and told us where to look in a 100 meter area. And yup, that’s where we found it. Gotta love math in a practical application. 👍
@PanduPoluan
@PanduPoluan 2 года назад
It's true that Safety Rules & Regulations are written in blood... But I always enjoy stories where no casualties happen.
@abelq8008
@abelq8008 2 года назад
This video title had me stressed out, glad this awesome crew got down safely!
@vap57
@vap57 2 года назад
As a Canadian, Val d'or is pronounced "Val door". while Dorval is pronounced “Dor-val" (as in valley).
@felixar90
@felixar90 2 года назад
As a a French Canadian, from Abitibi, Val D'Or is just pronounced Val dor. And Dorval is pronounced exactly the same but backward. Which is kinda funny. valdorvaldorval.
@amazing7633
@amazing7633 2 года назад
​@@felixar90 Abitibi? I've got a great song for you. Wait, you've heard it already. Mouches noires la chanson de Wade Hemsworth.
@felixar90
@felixar90 2 года назад
@@amazing7633 Yes. Although Little Abitibi River is in North Ontario-i-o. I live in the Abitibi region of Quebec. Near the Abitibi Lake which flows into the Abitibi River.
@pepebeezon772
@pepebeezon772 2 года назад
>as a canadian It's a french name
@roderickcampbell2105
@roderickcampbell2105 2 года назад
Brilliant post. I didn't know about this one. And I really like the appreciation for mathematicians. I have a brother who is a mathematician, a nephew who has a degree in math, my son has a degree in math, as do I. I watched an MIT Open Course (?) earlier today on math. I couldn't quite follow it all although it was undergrad!
@roderickcampbell2105
@roderickcampbell2105 2 года назад
There was another accident involving prop disintegration on a similar aircraft that related to actual prop examination techniques. That accident had fatalities sadly. I don't have the link handy. You may be happy about this.
@TheAutisticOwl
@TheAutisticOwl 2 года назад
5:27 "Link on your screen right now" Perfect timing.
@papanoel3999
@papanoel3999 2 года назад
This channel gets better and better. Visuals are on point, and the commentry is clear and precise,with lots of information to absorb. Brilliant.
@x-planeliveriesandstuffsho1074
@x-planeliveriesandstuffsho1074 2 года назад
4:08 Just short information about the ATR controlles. The ATR is a cable controlled plane. The hydraulic is just used to work the flaps and landing gear.
@PilotExplorer
@PilotExplorer 2 года назад
ATR has mechanical controls and hydraulics are used for landing gear(can be extended manually), flaps, braking, etc. It would have been a tough day nevertheless if the hydraulics were lost. Well done to the crew for safely landing the plane.
@chloescat
@chloescat 2 года назад
Love your channel, man. Thank you for adding a little bit of sunshine into my day. 👏👍❤️
@pilotpeego1820
@pilotpeego1820 2 года назад
This video is fantastic. Well done!👏
@steve3291
@steve3291 2 года назад
As always, an informative vid. It's always a good thing when the passengers walk away.
@piyushkanthak1087
@piyushkanthak1087 2 года назад
You make great videos man!
@MiniAirCrashInvestigation
@MiniAirCrashInvestigation 2 года назад
Thank you!
@deadpoetoftheyear
@deadpoetoftheyear 2 года назад
Youre my favourite aviation youtuber. You spend time on reports so much i adore your passion. Much love.
@Agent__42
@Agent__42 2 года назад
congrats on 100 k
@MiniAirCrashInvestigation
@MiniAirCrashInvestigation 2 года назад
Thank you!
@Agent__42
@Agent__42 2 года назад
@@MiniAirCrashInvestigation cant wait to see that silver play button keep it up well hit 1million soon
@jfdavis668
@jfdavis668 2 года назад
I still don't know why they don't put cameras on planes that let the pilots see the engines. If SpaceX can live stream during launches, cameras can work on a plane.
@hermannbose7347
@hermannbose7347 2 года назад
It’s quite easy Cost and workload for pilots. Cameras means more displays, more displays mean extra training. Extra training is expensive. Taking care of displays and cameras is expensive. Buying them in the first place is expensive
@Sashazur
@Sashazur 2 года назад
On top of what the other commenters said, the number of crashes that could have been avoided by having cameras all over is negligible, and you wouldn’t be able to view every part of the plane anyway. It’s just not worth doing.
@thatguyalex2835
@thatguyalex2835 2 года назад
@@Sashazur It might be worth doing, since planes already cost $10M-$100M. :) Even if a camera system costs $10,000, and 5 hours of training, that is nothing in comparison to the cost of the aircraft. Plus also, onboard AI could monitor the camera data on such a future aircraft design. That is just my opinion. Anyways, merry Christmas/happy holidays. 🎄🕎
@janicesullivan8942
@janicesullivan8942 2 года назад
Always happy to hear that everyone survived.
@GurpreetSinghmadsfan
@GurpreetSinghmadsfan 2 года назад
what a story & so beautifully narrated!!
@censored1430
@censored1430 2 года назад
My brain shut off for a second and I read the thumbnail as "How a bit of chlorine ripped a fart"
@YasminCarli
@YasminCarli 2 года назад
One of the few channels that make videos about incidents. So many videos with tragic flights were everyone died, good job covering these 99% worst-case scenarios. Great to know this histories.
@krzych91krk
@krzych91krk 2 года назад
"Looking for a needle in a haystack, when you don't know where the haystack is" - this one had me chuckle, I like your humour... (luckily no one got hurt here, so there's room for it)
@whoever6458
@whoever6458 2 года назад
My parents are mathematicians but I screw math up because I sometimes switch the order of the individual digits in a number. In any case, I have a hint for being able to always know where your pocket things (like your wallet) are. I always put all of mine into a plastic container and put it near the door. When I leave, I simply put all the stuff in the container into my pockets and can rest assured that I'm not forgetting anything. Then, when I come home, I take those pocket things out of my pockets again and put them back into the plastic container. There are lots of things that can be done through checklists or by having everything that has to be done in a short amount of time together. Might as well save the real thinking for problems you hadn't anticipated because there's no way to be alive without having quite a number of those kinds of problems.
@MovieMakingMan
@MovieMakingMan 2 года назад
Who says you don’t need to know math? The mathematicians in this video are heroes. If the missing parts of the propellers weren’t found other propellers in service on other planes could have failed and led to crashes.
@EstorilEm
@EstorilEm 2 года назад
And yet a yet later on Atlantic Southeast Airlines Flight 529, a nearly identical blade corrosion issue happened with much more serious consequences. :(
@michaelhope7620
@michaelhope7620 2 года назад
Correct, but the blade that failed on the ASA flight had issues passing the original Ultra Sound inspection from the first two failures. It is possible that some of the corrosion pitting on the blade caused it to fail about 17 months after this in August 1995.
@russiantyphlosion2205
@russiantyphlosion2205 2 года назад
Mind I make a suggestion? I recommend looking into Avianca flight 011, it’s an interesting crash which resulted in a large loss of life but yet is never really mentioned. Also interesting circumstances surrounding it. Even a book was made about it a few years back too
@ngwamakai1773
@ngwamakai1773 2 года назад
There many videos on Avianca 011 that I have watched on Mayday and Air Disaster Investigation.
@harrickvharrick3957
@harrickvharrick3957 2 года назад
"Looking for a needle... when you don't even know where the haystack is!"
@walshamite
@walshamite 2 года назад
I love the detail and the focus here. We owe a debt to Neville Shute and his story No Highway in the Sky (made into a film) for raising the awareness of the public about metal fatigue back in the 1950s. There was a lot of scepticism at first. Famously the breakup of early Comet aircraft confirmed it.
@mikekeenan8450
@mikekeenan8450 2 года назад
Though Shute was actually right for the wrong reasons; he imagined fatigue happening from a nuclear reaction in the aluminum atoms IIRC.
@1000CalorieSnackPack
@1000CalorieSnackPack 2 года назад
It's a good morning when you wake up and see a new video was just posted by Mini Air Crash Investigation.
@AshishKumar-fn9en
@AshishKumar-fn9en 2 года назад
Our mothers are also mathematician cause they are also able to tell were we have kept our stuff with pin point accuracy 🤣🤣🤣🤣
@kaooabunga
@kaooabunga 2 года назад
This video shows the importance of regular non destructive testings and inspections not only in aviation but in all fields of engineering and construction.
@michaelhope7620
@michaelhope7620 2 года назад
At the time of the accident, there was no non destructive testing available to find the corrosion. This includes visual inspection, as the lead wool that was used for the individual blade balance did not need to be removed, it was also not encouraged to be completely remove due to possible mechanical damage.
@APR1037
@APR1037 2 года назад
Whew! You got me with the title of the video. Yay for the mathematicians (truly amazing accomplishment) and thank you for NOT walking us through all the equations. 😅😅
@danholstein411
@danholstein411 2 года назад
Excellent job! I really look forward to each new video your produce. Thanks for all the time and effort you put into your art!
@Eruthian
@Eruthian 2 года назад
I worked in the aluminum industry a while ago. One time there had been rumors, that we would get contracts by the aero industry. As someone with privat pilot background and somewhat being an aircraft nerd, I was excited and shocked at the same time. Excited for obvious reasons, but shocked because I knew about the high safety responibilitys and my doubts about if my direct superiours would know aswell. Anyways, the contract never came, so there is that.
@BunkerFox
@BunkerFox 2 года назад
"cumulatively accumulated" is a phrase I never knew I needed to hear
@jacekatalakis8316
@jacekatalakis8316 2 года назад
Another interesting episode, sweet
@timnewton9610
@timnewton9610 2 года назад
You do an excellent job with these videos
@mohdakram4837
@mohdakram4837 2 года назад
Appreciate your presentation.......All the best 👍
@alphalunamare
@alphalunamare 2 года назад
I think you give Mathematicians too much Kudos, it was the Physics that enabled the numbers to be crunched so successfully. In particular: Sir Isaac Newton. On a tangent however, this pitting, due to electrickery, is a constant problem even today. Carbon Composites are becoming increasingly common and yet Aluminium is still being used in close proximity ... an absolute disaster in the making. Only a fool puts Carbon Composites and Aluminium together for they are doomed to destroy each other on quite a noble scale! Boeing take heed. :-)
@HweolRidda
@HweolRidda 2 года назад
I have degrees in both math and physics. This was definitely applied physics with some unremarkable university level math. Newton laid much of the ground work for both the physics and the math involved.
@alphalunamare
@alphalunamare 2 года назад
@@HweolRidda Yes ... Both! :-)
@edsonherald3720
@edsonherald3720 2 года назад
! ! ! ALMOST UNBELIEVABLE ! ! ! ! ! ! AWESOME REPORT ! ! !
@surferdude4487
@surferdude4487 2 года назад
A piece of the propeller penetrating the fuselage is another night-mare scenario. But much more srvivable than having a wing torn off. It really helps me to feel better about flying because I know the extent to which they investigate these crashes. "There is no such thing as 100% reliability.". Truth! But, thanks to investigations into incidents, we keep moving the march of 9's further every year.
@TheLastPhoen1x
@TheLastPhoen1x 2 года назад
Val-d'Or? Sounds like an ancient dwarf fortress, lol.
@ydro11
@ydro11 2 года назад
Val D'Or is french meaning valley of gold . There is gold mining there (obviously)
@TheLastPhoen1x
@TheLastPhoen1x 2 года назад
@@ydro11 Dwarves mining gold, got it.
@cal-native
@cal-native 2 года назад
Deformation mechanics (especially fatigue crack propagation) were a specialty of mine back in the mid-eighties as a materials engineer. It's amazing how cracks propagating from material defects (especially pitting and inclusions) can cause failures at levels so far below actual strength limits simply due to cyclical fatigue. This was not fully appreciated until after the crash of the Dehavilland Comets in the early fifties.
@jamesstuart3346
@jamesstuart3346 2 года назад
4:18 And the crew was so confident in the aircraft that they took off again
@blackandgold676
@blackandgold676 2 года назад
HAHAHAH!!!
@oldbeardedguy
@oldbeardedguy 2 года назад
I was eating pea-soup, watching this story. The spoon were held in position in front of my mouth, mustache and beard (poor spoon), for a rather long time, as you told about the ordeal, from the bang, down to :..... And thankfully it did (held together until they landed). I did not eat the soup in that spoon, before that plane touched down! I'm deeply impressed by your storytelling, the way you use your voice, it's just an awesome channel, where you present us for the fruits of your investigations! Love it :) And what's the story about the 15 "nope" folks????
@dodoubleg2356
@dodoubleg2356 2 года назад
"I can't even find my wallet," haha 🤣. Good one, but yeah, using math to find a prop blade that was only a few ft long?!? They should be working @NASA, ha.
@N8570E
@N8570E 2 года назад
An incredible level of detail. And thank you for praising mathematicians. I only have a bachelor's degree in mathematics and it made my brain hurt. Mini Air Crash Investigation, thank you for your efforts. May you and yours stay well and prosper.
@johnbailey3877
@johnbailey3877 2 года назад
What a pleasure to listen to a video where the “speaker“ is a human being with mastery of English - the bots And ESL speakers need editors
@galfisk
@galfisk 2 года назад
I'm annoyed at the programmer who made the meteorologically inaccurate double layer of flat-bottomed cumulus clouds. Many other clouds can form layers, but not those. Good video though. Such tiny details are sometimes the downfall of our most brilliant machines. I can't imagine the effort that goes into such investigations.
@thatguyalex2835
@thatguyalex2835 2 года назад
That's an MSFS 2020 error, the multiple cumulus cloud layers. :) But yeah, this turn of events definitely shows that the Swiss Cheese Model can have direct consequences to aviation starting from one issue, leading to other issues in the future.
@johnkern7075
@johnkern7075 2 года назад
Man! That's wild! A cork. Glad no one was in that seat.
@CenturyOfCid
@CenturyOfCid 2 года назад
This same problem also happened to Reeve Aleutian Airways Flight 8
@zacktong8105
@zacktong8105 2 года назад
You give the impression that the number two engine was kept running which seems impossible given the blade imbalance. Indeed a fascinating story digging back to the root cause.
@michaelhope7620
@michaelhope7620 2 года назад
After the portion of the blade broke off, the rest of the propeller imbalance caused it to break off the front of the gear box and leave the aircraft. So there was no thrust from the right/#2 engine.
@jamesturner2126
@jamesturner2126 2 года назад
Near miss MACI videos! The pilots' crisis management was great. Wild story.
@portuguesnomundo
@portuguesnomundo 2 года назад
Nice video my friend!
@oboealto
@oboealto 11 месяцев назад
"here's the thing about metal fatigue though, it's never going away, not unless we make a drastic leap in material science", I swear I thought a Skillshare sponsorship announcement was going to follow!
@00muinamir
@00muinamir 2 года назад
Imagine being in the seat next to the one that got sliced in half by the propeller blade...
@FlightData101
@FlightData101 2 года назад
Fantastic summary of this occurrence, thanks!
@torgeirbrandsnes1916
@torgeirbrandsnes1916 2 года назад
A Brasilia from ASA was subject to the same thing in 1994 I think. They made an episode of it on Air crach investigation. Great job as always!
@th.h.4947
@th.h.4947 2 года назад
Well from steel or iron water pipes it is known, that wood under lied to equalize the pipeline during installation leads to local pit corrosion in the steel or iron tube, due to organic acids formed when covered with earth and humidity, this can destroy iron tubes with 1 cm wall strength within 20 years.But water storages from the Bronze Age build entirely from wood lasted nearly 2800 years and where removed finally due to mud accumulation. So wood itself properly cut in winter, so as to reduce its sugar content, and probably treated with its own oil and resin can last very very long! Unfortunately when they removed it and put it in the museum of San Murezzan, St. Moritz Switzerland, they painted it with black coal tar and cut a big hole.
@4325air
@4325air 2 года назад
This accident is eerily familiar. The USMC C-130 tanker that crashed in Mississippi (?) recently was brought down by a thrown #2 propeller (metal corrosion) that went thorough the fuselage, consequently the skin started coming off, then a gearbox failed on #3 due to vibration and prop #3 came off causing the cockpit area to break off the fuselage.
@majorvonhapenallthetime8602
@majorvonhapenallthetime8602 2 года назад
Stuff the number crunchers, the pilots were the heroes here. Wise decision not to stress the hull any further than needed, but testament to a good design.
@uzaiyaro
@uzaiyaro 2 года назад
Interesting way to balance things. Typically with balancing, they will remove material, usually by drilling/milling or with a laser, from points where the balancing machine determines. But I suppose it was designed this way for a reason.
@milantrcka121
@milantrcka121 2 года назад
Any material removed from the prop blade will change its shape thus aerodynamic characteristics (and stiffness, vibration resonances and so on). So other means had to be developed. Dynamic balance is also dependent on the mass distribution throughout the blade (where the material is removed). Consider balancing a car wheel. Mass is added, not subtracted.
@ianr
@ianr 2 года назад
Great video, had not heard of this before.👏🙂
@nitsgupta6670
@nitsgupta6670 2 года назад
Great job I can already say!
@joecrammond6221
@joecrammond6221 2 года назад
this video reminds me of reeve aleutian airways flight 8, only that plane was more crippled than this one but luckily they made it down
@ih302
@ih302 2 года назад
That crew was top notch.
@joecrammond6221
@joecrammond6221 2 года назад
they sure were, great team work always helps safe a plane
@jerrychen6610
@jerrychen6610 2 года назад
Have you tried a ballistic trajectory calculator for finding your wallet?
@mrkiplingreallywasanexceed8311
@mrkiplingreallywasanexceed8311 2 года назад
Loved this episode like all of them! Of course we got another example of pilot skill and coolness under pressure - but this time the emphasis was a bit more on some science. Not just the clever maths employed in locating the propeller, but the metallurgy, physics and chemistry involved in designing, testing, manufacturing, monitoring and developing all parts of an aircraft but particularly really critical parts like prop blades. Mind you - and this is the thing with aircraft and aviation which totally differentiates it from all other forms of transport(excepting Space) - basically EVERYTHING is critical!!!!
@friendlyreptile9931
@friendlyreptile9931 Год назад
4:05 There is a big missinformation. The ATR is a cable plane, no hydralics are used for the alerons, elevator or rudder. The only thing that would have not worked, would be the flaps and the hydraulics for the landinggear but this has a backup function.
@andreadiamond7115
@andreadiamond7115 Год назад
Mathematics deserves so much more respect than many people give it. Some people have no clue they use math everyday, esp algebra.
@ronjon7942
@ronjon7942 Год назад
I always liked the ATR, I guess it epitomizes the regional aircraft to me. But til now, I didn’t realize how small the wing is relative to the fuselage. This is the 2nd incident I’ve learned about where the cork in the propeller was the nugget.
@cotochris
@cotochris 2 года назад
Interesting regarding the cork. Cork is no longer washed or steamed with chlorinated water as it produces TCA - the compound that causes the 'corked taint in wine. However for industrial use production of the cork is very different.
@themoley91
@themoley91 2 года назад
I like these lesser known ones where the ending could have been horrible but the pilots (and luck) managed to save the day and everyone was okay. Maybe less dramatic than the big crashes but cool to see how even if something goes horribly wrong, a lot of the time things work out. I’m Canadian and had never heard of this one.
@cogitoergospud1
@cogitoergospud1 2 года назад
“Not my chair, not my problem.”
@marcdennis6374
@marcdennis6374 2 года назад
Great presentation. Your pronunciation of Val D'Or does need improvement.
@aviationofnepal178
@aviationofnepal178 2 года назад
Wow this ATR 72 has King air cockpit
@ghostsofpunk
@ghostsofpunk 2 года назад
Your videos get better every time! Well done.
@scottydawg1234567
@scottydawg1234567 2 года назад
There's also the American Airlines Flight 191 incident where metal fatigue (stress crack) caused an entire engine to rip away during takeoff. Although that was a result of airlines caring more about savings vs. safety rather than a chemical reaction.
@JoshuaC923
@JoshuaC923 2 года назад
Legend mathematicians!
@MiniAirCrashInvestigation
@MiniAirCrashInvestigation 2 года назад
I agree!
@paullacey2999
@paullacey2999 2 года назад
Fascinating!👏👏👏
@rafaelwilks
@rafaelwilks 5 месяцев назад
Considering this is practically the same sort of failure experienced in two turboprops in the US by ASA, the manufacturer must have been Hamilton Standard. Regardless of the manufacturer, this just goes to show that hollow metallic propeller/fan blades are really not the best - hollow fan blades have disintegrated spontaneously in flight several times, whereas carbon fiber composite fan blades have never, ever spontaneously disintegrated.
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