The Economics That Made Boeing Build the 737 Max

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Animation by Josh Sherrington
Sound by Graham Haerther (www.Haerther.net)
Thumbnail by Simon Buckmaster
Special thanks to Patreon supporters Adam Chelminski, Arkadiy Kulev, Charles Zilinski, Chris Allen, Connor J Smith, Daddy Donald, Etienne Dechamps, Eyal Matsliah, Hank Green, John & Becki Johnston, Kyle, MyNameIsKir, Plinio Correa, Qui Le, Remi_Scarlet, Tom Dooner, Tyler Hamm, and Vaughn Mudrick
Music by epidemicsound.com
Select footage courtesy the AP Archive
Select footage courtesy Bigstock: bit.ly/bigstock-videofreetrial
Southwest 737 MAX landing and takeoff shots, Spirit a320 taxi shot courtesy PDX aviation
References:
[1] www.nytimes.com/2019/04/08/bu...
[2] en.wikipedia.org/wiki/List_of...
[3] www.flightglobal.com/news/art...
[4] web.mit.edu/airlinedata/www/20... web.mit.edu/airlinedata/www/20...
[5] web.mit.edu/airlinedata/www/20... web.mit.edu/airlinedata/www/20...
[6] www.boeing.com/company/about-...
[7] sites.google.com/site/unitedf...
[8] web.mit.edu/airlinedata/www/20... web.mit.edu/airlinedata/www/20...
[9] www.airbus.com/newsroom/press...
[10] www.nytimes.com/2011/07/21/bu...
[11] news.aa.com/news/news-details/...
[12] www.nytimes.com/2011/07/21/bu...
[13] www.panamacademy.com/boeing-7...
[14] www.nytimes.com/2019/04/08/bu...
[15] www.boeing.com/commercial/737m... www.b737.org.uk/737max.htm
[16] aircanada.mediaroom.com/2019-...
[17] thepointsguy.com/2018/01/gol-...
[18] www.grc.nasa.gov/www/k-12/air...
[19] www.nytimes.com/2019/04/08/bu...

Опубликовано:

29 апр 2019

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Комментарии : 3,7 тыс.

@Wendoverproductions 5 лет назад

Hey all, I hope you find this video interesting. It is meant to provide an overview of what led to Boeing creating the 737 MAX rather than giving a comprehensive overview of the factors leading to the two crashes and the issues with MCAS so the explanation on that is quick. If you want to learn more about that, I would suggest starting with this article: theaircurrent.com/aviation-safety/vestigal-design-issue-clouds-737-max-crash-investigations/ Also, for the first time ever, we're taking topic suggestions for future Wendover videos. If we end up using your topic, we'll send you a free Wendover t-shirt in gratitude. Submit your ideas here: docs.google.com/forms/d/e/1FAIpQLSdMAoo9CfGxr5OvZdz3qCCEkeQSVJpak3YYTHQFLRwXOyTOXA/viewform?usp=sf_link

@DemoEvolvedGaming 5 лет назад

Good video, but it feels like there should be a part 2 that's missing. Like why did the 737 only have 2 AOA sensors, and why check only a single sensor? Why wasn't redundancy designed in? And so on... At some point it is not because of our "poor primitive brains" and becomes just negligence.

@gabrielelibutti1361 5 лет назад

Great and interesting video

@Soordhin 5 лет назад

Interesting video. Just one thing, the A320 is still a 30 year old design itself. And yes, it still uses a paper checklist concept for normal operation. That checklist can be put onto an EFB, but that is still not a feature of the airplane, just a feature of directly replacing a paper checklist by the same thing on a screen. Unlike the 737, the Airbus avionics were never updated, which leads to the weird fact that the 737 avionic system is actually a generation ahead of the A320, but its automation is 2 generations behind. By the way, at least in many parts of the world, the 737 100/200 is a different typerating than the 737-300-MAX10. So no, a 737 rated pilot cannot fly all variants, just most. And differences training between variants can actually be extensive, the minimum differences course between a Boeing 777 and Boeing 787 (legally they are two variants of the same type rating) takes at least 7 working days including quite a few simulator missions. Same for the differences training between the 757 and 767 or the A330 and A350, all of those are one type rating for very different planes which are seen as variants of each other.

@buckstarchaser2376 5 лет назад

The end of this video sounds like every third episode of Air Crash Investigation. "Boeing is totally going to loose face." ...and I'm like "So, I see they got over the doors-opening-midflight thing, various fallapart issues, and the occasional Oops-it-blew."

@jec6613 5 лет назад

@@DemoEvolvedGaming Also, the crashes are far more complicated than just MCAS. For instance, why did no US pilots have much difficulty when they had AOA disagree, despite MCAS engaging? The answer appears to be that US pilots get more mandated rest than the rest of the world, which is also why no US passenger carrier has had a hull loss crash in over 10 years, when they used to occur at the rate of 1-2 per year before the new regulations. Every air accident is a chain of events that gets past a number of safety barriers, and the 737 MAX is no exception. Break any one link in the chain, and the accident doesn't occur. There's also the question of why is MCAS on the 737 MAX different than it is on the older Boeing KC-46 MCAS design, and that decision tree and FAA approval I'm sure is going to be looked at heavily, as the updated 737 MAX MCAS software is ripped straight out of the KC-46.

@muhammadabdullah4392 5 лет назад

'There is one other big difference between modern aircrafts and 737 MAX, most modern airplanes are flying up above right now, the 737 MAX is not...." Most SAVAGE line of 2019

@RonniebonGaming 5 лет назад

Actually it's only the 737 MAX 8 model, the rest are flying

@pryn.darkstorm 5 лет назад

@@RonniebonGaming Actually some regions banned ALL MAX models, not just the 8.

@sticksteves7499 5 лет назад

@@RonniebonGaming To my knowledge, MAX 8 and 9 are grounded worldwide.

@samib3589 5 лет назад

an old plane that has been renovated with compromises to safety.

@trilomann 5 лет назад

Nailed it

@newmono7341 5 лет назад

I really like the thumnail of this video and the previous one. They blend in with their respective topics so well.

@brunoglopes 5 лет назад

Newmono I thought the same! Such care and consideration put in to those thumbs. Really nice and satisfying to see.

@winst2000 4 года назад

What I've found disturbing is that today, Boeing fired its CEO for the aftermath of the 737 Max mess. But he was not the person who made the decision to move forward with the re-engine program. It was during James McNerney's tenor that Boeing was under the pressure to offer 737 Max from its biggest customer American Airline. The constant pressure from Wall Street for each public company to perform every quarter is the root of the problems.

@os2958 4 года назад

But he is the person that oversees the current processes. He assured President Trump that the airplane was fine after the first crash. He definitely deserved to be fired and more.

@hagalazmultiverze3411 4 года назад

No matter the reason, he is still responsible for all f*ckups done by the company : He's getting paid for it...

@fynkozari9271 4 года назад

All that money, still Boeing being the cheapo.

@aztro187 4 года назад

Ohhh the wall street devils pffff

@erikbakker1531 4 года назад

Wallstreet "pressure"? I just see context-dropping at Boeing. Everything one does, has future consequences. One should therefore never fail to grasp the big picture. Especially that of time. You want to go for the money? Then grasp the big picture. Especially that of time.

@deusexaethera 4 года назад

"The 737 Max only has a warning light." Great, that's just what you need at 30,000 feet in the air -- a Check Engine Light telling you to go visit a mechanic.

@clayyosten2833 4 года назад

That was a misleading sentence. It has multiple lights all over the cockpit for different instruments/systems. The pilots will know what's wrong when it happens. Newer planes have what's called an EICAS (Engine Indicating and Crew Alerting System) and it works pretty well but the 737 isn't lacking.

@clayyosten2833 4 года назад

@bigbodyrover Hilarious. How did you come up with such a clever joke?

@rasputin4u1 4 года назад

@@clayyosten2833I think some Boeing 737 Max did not even have that light ..it was an option offered by Boeing at extra cost

@ianmuir3640 4 года назад

Wanst the warning light an optional extra ?

@tomstravels520 4 года назад

Clay Yosten yeah but compare it to an airbus which gives you step by step instruction on what to do and it is a really outdated way of fault finding. The pilots of Helios 522 didn’t even know what warning they were getting

@jerry3790 5 лет назад

Everyone else: Have you seen Endgame? Wendover: Have you seen the economics that made the 737 max?

@jesusdiscipledon1499 5 лет назад

Jerry Rupprecht IS THIS A SPOILER!?!? ARE THERE PLANES IN ENDGAME!? YOUVE RUINED IT!!!! How about this.... SNAPE KILLS DUMBLEDORE!!!

@E1craZ4life 5 лет назад

Turok, not the dinosaur hunter, the adult film star These are spoilers: m.ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ZfyZnpA1AFM.html

@dmacrolens 5 лет назад

Yawn.

@dressrosa1918 5 лет назад

@Micah Lall-Trail Antman goes into Thanos's ass and kills him

@niccatipay 5 лет назад

Ant man *E X P A N D S* inside Thanos' ass.

@Ryio5 5 лет назад

That is the most beautiful thumbnail I've ever seen.

@Mufasa737 5 лет назад

Ryio5 the thumbnail shows the max with 230 seats which it doesn’t even have that much

@khalidhebshi5318 5 лет назад

True

@ajithkumarr19 5 лет назад

This thumbnail was made possible by wix.com :)

@MohammadAsadullaShareef 5 лет назад

@@Mufasa737 Max 10 can be configured in an all-economy layout to have 230 passengers. It's good that the thumbnail shows the full potential capacity of the plane.

@kiradotee 5 лет назад

Should have used the number of deaths for the seats.

@stewie1237 4 года назад

“It has a few aspects that make it unique” *Its the first aircraft to be able to intentionally crash without pilot input*

@ThatGuy-te9wh 4 года назад

747SP - China Airlines 006. 1985.

@eh4822 4 года назад

Im pretty sure any plane would crash without pilot input

@michaelho4014 4 года назад

I Set Some Grass On Fire DC-10 rear cargo door locking handle: Am I a joke to you?

@karlosbricks2413 4 года назад

@@ThatGuy-te9wh well, it did it's best, it's just those guys tried to restart an engine as FL350.... and forgot to check the planes bank angle...

@andymadden8183 4 года назад

Airbus was the first to cause crashes without pilot input.

@brezhnev89 5 лет назад

I rarely leave comments but the structure and logic of this video is great. Well explained and put together.

@DroopyPenguin95 5 лет назад

All honor to you, this video is amazing compared to every other "what happened to the 737 MAX"-video I've seen. The fact that you started from scratch and explained everything is amazing. Also, your point about the investors not being happy if they chose to build a new plane which lead to the decision to make the MAX is so important. People who decide over something they don't understand... Thanks for the awesome video :)

@XR190190 5 лет назад

You should check Vox video about it as well. Maybe less precise but very good as well !

@karlosbricks2413 5 лет назад

@@XR190190 yes, although you seem to end up with loads of people who now think they know all there is to know about the B38M, which leads to some actually rather uninformed comments on other videos. The video itself is good though

@DroopyPenguin95 5 лет назад

@@XR190190 I have seen Vox's video :)

@ellawhite5167 5 лет назад

@@XR190190 the vox was crap because the people making it did not under stan planes so they said it staled eazyer which is not really true

@youngalwyn1124 5 лет назад

Many commentators have complained of factual inaccuracies in this video.

@Finkelfunk 5 лет назад

With the amount of airplane related videos this channel should really be called "Wingover Productions"

@karnadyjuan 5 лет назад

Windover Productions

@cmonkey63 5 лет назад

There is an alternative you don't want: LegOver Productions. I'm pretty sure that's a very different channel.

@HiyasuJ 5 лет назад

I ain't even mad, all of his videos are interesting

@ph11p3540 5 лет назад

@@karnadyjuan Windover the wing foil generates lift. Windover is quite fitting. Besides the he probably did an online trade name search and discovered that name was likely copyrighted. He did right.

@karnadyjuan 5 лет назад

@@ph11p3540 im not even aware of windover is actually a thing, and i have 0 knowledge of trademark too.. just a wordplay :)

@massimookissed1023 4 года назад

The 737max is not a cheap, small plane. It is an expensive, large paperweight.

@JostVanWair 4 года назад

yes

@car24dude 4 года назад

More like a airplane junkyard.

@rogerrussell9544 4 года назад

@@vincentdow5899 How does an Airbus failure that didn't crash and kill passengers make Boeing 737 Max sound better?

@rogerrussell9544 4 года назад

@@vincentdow5899 There are 346 people that know enough about it.

@swapnilgohil7280 2 года назад

That's a big ass paper you got 😂

@xenomorphbiologist-xx1214 4 года назад

“Most airplanes are flying right now, the 737 Max is not” *EVISCERATED*

@SupremeM 5 лет назад

You've made me obsessed with planes Wendover

@stevenjlovelace 5 лет назад

Me too. Just like Geoff Marshall's gotten me obsessed with trains. All the transportation videos!

@michaelkitchin9665 5 лет назад

@@stevenjlovelace Yep. Geoff's enthusiasm is terrifying.

@Soniti1324 5 лет назад

Your mom *would* name your ass Supreme.

@davec5613 5 лет назад

When I was 17 I was headed back to Orlando from Oahu. The L-1011 I was on was flexing and bowing and all sorts of stuff while taking off down the runway. I melted in my seat (rear of the plane looking down the aisle). The stewardess sitting in a jumpseat told me it was fine. Way out over the Pacific the pilot came back with a pen and pad and described to me how the plane is supposed to be able to flex. Because if the whole thing were rigid it would break apart. I learned so much from him in that maybe ten minutes that I don't freak when I see the wings bouncing up and down and watch the cabin bow and flex. Modern airplanes are marvels of engineering.

@nickgehr6916 5 лет назад

Airplanes : **exist* Wendover: *hey baby, wanna make a video*

@jody.lumbantoruan 5 лет назад

no surprise there

@adamp.3739 5 лет назад

Also Wendover: It's free REAL ESTATE!

@biggerdaddy123 5 лет назад

Reading comments before watching! Getting my fix before immersing into another brilliantly informative episode. BTW, More than PlanePorn, WP is making sweet love to anything regarding aviation. #PlanesMatterWP #PlanesFantasizeWP

@Jayfive276 5 лет назад

Who is upvoting this lazy shite? This doesnt even make sense.

@tabaks 5 лет назад

Someone makes a video. Zenn: Let's make a shitty comment that means absoultely nothing.

@Ratplague707 4 года назад

And meanwhile, throughout this entire process, Boeing was investing billions into stock buyback programs to prop up the share price, (and boost the stock-based compensation for its executives), instead of investing that money into actual engineering r&d. I hate to see a storied American company like Boeing and all the jobs that it brings facing such an uncertain future, but I believe that this kind of corporate greed and narrow-mindedness should not go unpunished and Boeing is reaping what they sowed.

@Kolan_Koala 4 года назад

No mention that they cut costs by only using one AOA sensor instead of two and didnt even mention the MCAS system to pilots.

@hayleyxyz 4 года назад

Planes have 2 AOA sensors. The issue was they only used the input of one into the MCAS. If they fed data in for both, and MCAS got mismatched data then that would need to trigger a warning to the pilots (which would have required training). So it was down to cost; pilot training. But not cost for the AOA sensor.

@joshhouse6857 5 лет назад

Just wanted to say I love your videos. You make learning airport logistics interesting. That's basically magic.

@darealphantom 5 лет назад

I’ve watched lots of videos on the 737 max but by far you explained it in more detail and overall better

@aejazahmed7768 5 лет назад

Watch video by Vox

@mangos2888 5 лет назад

@@aejazahmed7768 2.

@34Clipper 5 лет назад

Mäander wow. I had no idea. That’s so sad.

@johnstuartsmith 4 года назад

The fact that Boeing kept redesigning and updating the 737 to be able to sell the plane on price instead of fuel efficiency wasn't what led to the crashes and grounding. Where Boeing messed up was by designing MCAS in such a way that it took all of its critical Angle Of Attack data from a single sensor. When that one sensor was defective, damaged, or frozen, it sent erroneous readings into the MCAS system, which ordered the plane to go nose-down to "correct" a stall condition that was not actually happening. Depending on one sensor created a "single point of failure", which is a design flaw that good "belt and suspenders" engineers avoid. Two independent sensors feeding the MCAS and a warning signal to pilots that that the sensors aren't agreeing would be better. Three independent sensors feeding a logic circuit that disregards a sensor that is not in agreement with the other two and "assumes" the two that agree are correct, doesn't feed the bad sensor's bad data to MCAS, AND warns pilots of the sensor issue is probably what SHOULD have been designed in the first place, but some non-engineering middle manager came up with a cheaper idea on behalf of Boeing's shareholders.

@user-sn7ho7yf8n 4 года назад

ARABIA

@roytoy 4 года назад

There is a variance to your argument about type rating for you to consider. Airbus from the very first 300 series aircraft has had as its design directive to keep the flight deck as similar as possible across the range. In theory, the crew of an A320 could, with minimal to no additional training could take the control of an A330, A350 or even the A380. This follows the Shneiderman's Eight Golden Rules of Interface Design, a theory that was design for software development and UI/UX but applies very well to the design of hardware as well... like for instance, the flight controls of an airplane. Bottom line, Airbus, as a younger more dynamic company has a vision facing forward, where Boeing is relying on steam from the past. An argument could be made that the Dreamliner was Boeing's attempt to look ahead, but again that airliner has also been plagued with issues emanating from poor management decisions.

@ArcticWolf124_ 4 года назад

Atleast the 787 is still considered successful as it replaced the 767 and airlines like it.

@rkan2 4 года назад

Both the 777 designed in the 80s and early 90s and also the 787 are FBW aircraft. While they still maintain Boeing philosophy of giving the pilot "direct" control at any stage of the flight, they are still FBW aircraft, just like an Airbus. The only reason Boeing did what they did with the 737 Max was because of profits. Everything was in place to design a new single aisle FBW aircraft. Of course it is likely that it would have sold much less...

@paullockyer9793 4 года назад

Rogelio Hernandez jn

@lostn65 5 лет назад

You could have also mentioned that Boeing did not provide sufficient training to pilots, told them it flies the same as the previous 737 and they wouldn't need any training or simulator experience. All the pilots got was a 1 hour ipad course. The MCAS system was NEVER mentioned to the pilots. When the AoA sensor malfunctioned and caused MCAS to nosedive the plane, the pilots did not know how to turn off MCAS, because they didn't even know the system existed. It's not mentioned in the manual, and Boeing themselves did not think it was important enough to inform them. This is criminal negligence if you ask me. Additionally, it relied on a single AoA sensor even though there were two. If that one went faulty like it did, the plane was in trouble.

@eugeniustheodidactus8890 5 лет назад

lostn65 .... you are mostly correct, however with one caveat about MCAS... when MCAS deploys, it will actually mimic a STAB TRIM RUNAWAY which we are all trained for, which is defined as: *un-commanded pitch trim* . Boeing's culpability for conspiracy and deception notwithstanding, they were relying on pilots to comply with the published checklist procedure for the runaway stab trim situation. And these items are MEMORY ITEMS which every Boeing pilot trains for. The Ethiopian pilots did in fact comply with shutting off the cutout switches. But they *turned them back on* , which delivered the final kill shot from MCAS. I agree that knowing about the existence of this system would very likely have led to a far different outcome. Armchair piloting hindsight is 2020, and I was not there. I don't wish to throw shade on those pilots.

@dannyvdmoo 5 лет назад

fully agree

@KevinLindsay1 5 лет назад

They did no how to turn it off and they did, but then they turned it back on, bad pilots cause bad flights the max has been flying in the US for 3 years with no issue.

@JoseLopez-hh8uh 5 лет назад

@Jayson Davis Right on. I will never fly in a Max. Boeing's people FUCKED up. Evil pure evil. Taking short cuts on lives. WRONG DOING. I hope the FBI finds criminal negligence from the responsible individuals. I DO NOT TRUST BOEING'S "software fixes." What ELSE is wrong with the MAX?

@JoseLopez-hh8uh 5 лет назад

@Jayson Davis Let him speak (to show his ignorance). Very sad it is when people refuse to see the truth.

@advaygupta1989 5 лет назад

The thumbnail is *pretty fly*

@serraramayfield9230 5 лет назад

For a Wendover Guy

@c0t556 5 лет назад

Literally

@AnimeSunglasses 4 года назад

So, as usual, the deepest foundation of the accident is that our economy holds next quarter's and next year's profits as more important than literally everything else.

@dannybarcenas9701 4 года назад

So sad to say

@stemogstel22 4 года назад

And what is interesting is that time-and-time-again business case studies show that companies who plan around short term profitability are frequently unable to maintain long-term viability.

@AnimeSunglasses 4 года назад

Yup!

@miscbits6399 4 года назад

This has been the case ever since the mass deregulation events of the 1980s. The noisiest shareholders ONLY care about quarterly profits and don't care if that kills the company as they'll have ditched the shares long before that happens. Some other sucker always gets the losses. These are the same mentality as those who think that business is all about "winning" and "losing" - that's the kind of mentality that goes to war for the "booty". Peace grows markets and makes far fewer enemies.

@AnimeSunglasses 4 года назад

@@miscbits6399 Yep. If we don't find a way to outlaw that behaviour, or at least make it lose money fast, they're gonna wreck the economy and planet for us. Re-regulation should be only the first and gentlest of the steps we take.

@michaeljayatilaka109 5 лет назад

Fantastic video, been watching this channel for ages and love how you've explained quite simply the decisions that were made that probably caused the problem.

@naan-oyobizniz3168 5 лет назад

There was this feeling in the air with this channel for me for ages. This channel is different than others. Its not one of those channels that flew too high, or one of those channels of some dude standing in front of a green plane. This channel has never undergone any major turbulence and isnt likely to roll over any time soon. Much rather it will spread its wings and take to the sky. I just want this channel to bombardier me with entertaining videos. I think the repetitiveness of other channels so rudderly disappointing and I would rather watch 747 videos of wendover than one of someone getting a 320 kill game in Fortnite. Damn I would even watch this in an elevator. I would dance like a twat and flap my arms if that summoned a wendover video

@koharaisevo3666 5 лет назад

12 times? :D

@pfc.christianl.3660 5 лет назад

I count two plane names in here. Bombardier (manufacturer) and the B747 (Queen of the Skies).

@coscorrodrift 5 лет назад

@@pfc.christianl.3660 a 320 kill game

@livethefuture2492 5 лет назад

genius

@PharrowlOG 5 лет назад

Turk Brounce Good effort, but I found a lot of those puns to be rather...plane.

@thomasturner6980 5 лет назад

Soon Half as Interesting will become a plane channel and wendover will have to create another channel until it's taken over by planes again

@christophervlaskamp7462 5 лет назад

Thomas Turner what

@NaenaeGaming 5 лет назад

YOOOSSSS

@MaUrIcEtAxI 5 лет назад

Wendover will eventually run out of plane topics or material, and will have to start a WendoverAirline to create more content 😂

@nonamedpleb 5 лет назад

this is the main channel though not HaI.

@akeiai 5 лет назад

Lol 4 times as interesting would make a better video

@asilva_media 5 лет назад

Cool video, although the 737 MAX has hydraulic flight control actuators, not cables. The cables are there for backup. It also does not have just a warning light, it displays in detail warnings on the all-new large MFD display panel. And, if you mean seven switch flips to turn on the plane, with other aircraft being only one, that is not true. Most aircraft require 1 switch to be flipped to allow power to the main electrical bus, with many more to start the engines. This is true for the 737 MAX, along with almost all conventional aircraft.

@azmike1956 5 лет назад

SimPilot thanks for making that correction as the video was purposely deceitful. I've worked on many 737's & they are great planes.

@cuinboc 4 года назад

Let the amount of steps for powering the engine on modern plane be A, then for the 737 NG/MAX, it would be a+7

@NthSyd747 4 года назад

IN BOC: Your comment is incorrect. The engine start sequence on most commercial jet aircraft is very similar. The B737 is no more complex or has more buttons or switches during engine start than any others. I’m sure there are even videos on RU-vid you could watch on this :)

@cuinboc 4 года назад

NthSyd747 Not sure if it has changed in the NG/MAX but if you look at article [1] in the description, It describes those extra process

@markevans2294 4 года назад

There are plenty of older B737 variants still flying, Which have very similar startup procedures and flight control systems. With 747s, 757s and 767s not being fly-by-wire and having paper checklists too. The "one switch to turn plane on" depends on exactly what you mean by turning the plane on. It may also be easier if you have ground power (and air) hooked up. If you need to use the APU then I think all planes require multiple switches, in the right order.

@a753951852 5 лет назад

Probably the best 737 max story I've seen till date.. Simple and ample of background information..

@abdelhak50 5 лет назад

I'm working in the airline industry at Cathay Pacific because of Wendover

@jz4774 5 лет назад

Cathay Pacific is fucking nice, everything about it is great

@Darkhelboy 5 лет назад

Doing what?

@chung729chung 5 лет назад

They were good, they are now very harsh to their employees. I come from Hong Kong, I have many many friends and relatives working in Cathay.

@lain11644 5 лет назад

@@chung729chung Because Hong Kong is now part of China.

@ConcordDown 5 лет назад

I only Fly Cathay! When I can

@MultiJebusChrist 5 лет назад

737's are like pickup trucks; putting in a bigger engine and giving it an 8" lift ruins the handling.

@rkan2 5 лет назад

Except any car you don't have to train the driver, so you can actually add more augmentation systems to make the car feel like, well anything. The 737Max airframe was never a problem itsel, but the architecture it was built on was.. Take for example any modern fighter jet.. They are inherently unstable aerodynamically, and only possible to fly because the pilot doesn't actually fly the plane, but the computer! Boeing could've done the same for the 737Max, but it is rather irrelevant because it would've led to the same outcome of new training to pilots.. After the training bit, it would not have been a great stretch financially to build a completely new plane since Boeing has plenty of modern architectures to build a plane from (777,787 which are all almost as fly-by-wire as an Airbus..)

@jesuisanonyme8199 5 лет назад

Pickups don't crash vertically tho....

@MultiJebusChrist 5 лет назад

@@jesuisanonyme8199 You haven't met my uncle...

@Muehlenbauer 5 лет назад

@@MultiJebusChrist How did your uncle do that?

@minimalmo 5 лет назад

@@MultiJebusChrist lol

@balduroreyjolfsson7853 4 года назад

Mad respect for these elegant and highly informant videos. One of my favorite channels for sure :-)

@cappunino7629 4 года назад

"Most modern aircraft are flying up above right now but the 737 MAX is not," BOEING CEO starts crying for the last time

@Cheeky-fingers 4 года назад

Obviously the Airbus fans will keep quoting the A380. The plane nobody wants to buy. The A321neo, the 737 Max altenative has no encountered its own issues. Britishs Airways amoung other carriers has hadto remove many rows of seats due to inflight inbalance. These planes are now highly ineffecient to airlines who prefer to hold of for the Max return due o the huge savings.

@dstblj5222 4 года назад

Its one row on neos with space flex which adds an additional row so all that's happened is spaceflex is currently not active

@miscbits6399 4 года назад

@@Cheeky-fingers A380s haven't been grounded en masse with serious design issues. As for "holding off for the MAX" - the penalty clauses on order cancellations are stiff - it's usually cheaper to take delivery and flog the aircraft on than to cancel once an order goes "firm". In any case the backorder list for the A320 family is over 8000 units long so jumping ship isn't something any customer can do overnight. The balance criticality issue in longer fuselages is well known. Problems occur when airlines like BA attempt to go "sardine can" in their economy seating arrangements without considering how to balance that in the front of the cabin. In the time between ordering and taking delivery they went from being a reasonable airline to trying to compete with Ryanair and as a result are about as (un)pleasant to fly with as a result. The balance problem doesn't occur in all-economy layouts or even if the front only has business-class seating. It requires _severe_ aft imbalance and a very late go-around in shitty conditions. (so imbalanced the aircraft is at risk of deciding to tailsit whilst at the gate)

@alphaadhito 5 лет назад

What a great video. Step aside for all the comments, R.I.P for those who lost their life on Flight 610 and Flight 302

@QuarioQuario54321 5 лет назад

I don’t care for any

@gexpe2003 5 лет назад

RIP

@Raheel2006 5 лет назад

@@QuarioQuario54321 That's harsh. The people on those planes died.

@jayford6280 4 года назад

Erm, the last US fatal crash was 10 years ago soooooooooooo....

@MrHav1k 4 года назад

@rogerwilco2 5 лет назад

Your videos on the airline industry are pure gold. Very well made and very informative. Thank you.

@biomanization 5 лет назад

Finally, an excellent explanation of the 737 MAX and the environment in which it competed. Good job!

@chinmaysutagatti540 5 лет назад

Airplanes:*Anything happens* Wendover Productions:Write that down! Write that down! Edit:Thanks for all the likes

@chongjunxiang3002 5 лет назад

But he is a bit late though, it is already few months since the events.

@tianwang3768 5 лет назад

Anything means 400+ people died?

@chongjunxiang3002 5 лет назад

@@tianwang3768 It is an 'anything', but very sad to say that.

@Jayfive276 5 лет назад

Yes. That's what his channel is about. Why do you feel the need to point this out? Can you not express yourself without using the same fucking stupid meme?

@chinmaysutagatti540 5 лет назад

@@tianwang3768 By anything,I mean absolutely anything in the aviation industry. But this incident is very horrendous,sad to see that a rush to beat their competition soo many people had to lose their lives.

@benjamintomassennordahl7911 5 лет назад

Finally! Years of waiting but it paid off, You finally mentioned my hometown.

@ExperimentIV 5 лет назад

bergen?

@benjamintomassennordahl7911 5 лет назад

@@ExperimentIV yes

@ericgulseth74 5 лет назад

@@benjamintomassennordahl7911 Bergen is a beautiful town. Loved the tram that goes to the top of the mountain.

@vickybenson8552 5 лет назад

Hello

@benjamintomassennordahl7911 5 лет назад

@@ericgulseth74 Yeah Fløyen is one of the must-sees in Bergen.

@ianwheeler8764 4 года назад

Great analysis. Thanks for taking the time to put this out.

@wItchHuter13 5 лет назад

What a phenomenal video. I share and appreciate your enjoyment (love) of airplanes and am really glad you made this informative video. It is a fascinating background and I like that you don't just belittle the people who made the decision, but offer an explanation and how it ended up a tragic story.

@denelson83 5 лет назад

MCAS these days actually stands for "malfunctioning, crashing aircraft system".

@asystole_ 5 лет назад

Might Crash Any Second

@totaleXess 5 лет назад

It’s not malfunctioning though. It’s very efficient at crashing aircrafts.

@Anirossa 5 лет назад

Malfunctioning Crashing Aviation System is what I would prefer, but good enough

@denelson83 5 лет назад

@@totaleXess Well then, how about we rename it to "system that corrects and augments movement", or SCAM for short?

@mwbgaming28 5 лет назад

Malfunction Causes Airplane Crash

@willmorrell488 5 лет назад

Who says he's interested in aircraft?

@christophervlaskamp7462 5 лет назад

Joe Swanson I I I I I

@lenzcone 5 лет назад

Doubt it

@kevishader3561 5 лет назад

| || || |_

@filiphaas2638 5 лет назад

@@lenzcone. I feel that I'm meeting u 3rd time

@ReptilianLepton 5 лет назад

@@kevishader3561 no loss plz

@mojitomaker 4 года назад

Great episode. If only all media and journalism was this detailed and articulate.

@christophersabri169 5 лет назад

Great video! I love how all the history for most of the video comes together at the end and it all just clicks. It's sad to see the lengths companies will go to save money.

@roflchopter11 5 лет назад

Hot take: MCAS, done correctly (using both AoA sensors, with the warning lights, with with actuation limits, and with pilots who can execute their memory items from memory) is a completely reasonable solution. MCAS is not required for stability, and is only required to make it fly like older 737s to reduce the regulatory burden. That being said, the implementation that was flown should never have been approved.

@tihomirvrbanec9537 5 лет назад

Exactly. I don't want to put the spotlight and blame away from Boeing, they do deserve it. But Airbus had similar problems when they introduced alpha floors and their flybywire laws.. and they even had crashes of types bcs of this...

@hjups 5 лет назад

There is also the fact that MCAS has been around for quite a while, and is a proven system on the large Boeing military aircraft. The only difference is that the military aircraft use both AoA sensors, and the system automatically cuts out when back pressure is applied to the yoke (something that should have been implemented to begin with, but is supposedly in the new software patch). From the reports and rumors surrounding the Max crashes, it seems that Boeing is not completely at fault though. It sounds like information was not being conveyed correctly between Boeing, the Airlines, and the Pilots, which may have lead to improper maintenance and insufficient difference training (both of which would have been negated if Boeing had implemented the same MCAS system as on their military aircraft). Airbus has had some far more frightening failures from their flybywire system, which has resulted in a few crashes, though as I recall they were spaced further in time. Boeing was just unlucky that two crashes happened so close together.

@CaptRR 5 лет назад

Yep, Boeing screwed up, no doubt about it, but the 737 max is not a bad plane, and with logical limits and redundancy it will be a very safe airplane. Hell the MD-11 was a proverbial deathtrap for a wile be for McDonald Douglass, but in the end it went on to be a very safe plane.

@nooranik21 5 лет назад

I fear though through bad press, the 737 MAX will have the same fate as the DC-10. A wonderful airplane marred by poor public perception. It reminds me of the book Airframe by Michael Crichton.

@Token_Nerd 5 лет назад

As an engineer, I cannot stress this enough. Engineering is mainly about doing things as safely as possible while minimizing costs, that's why we exist. It was completely within Boeing's right to utilize these systems in order to re-engine the 737. As a result of these actions, they'll actually help the planet significantly by reducing fuel consumption, so it's a reasonable course of action. What I want to know is why on earth they allowed only two airspeed indicators to be installed on this plane when they tend to have a history of malfunctioning, and why executives pushed for the MCAS implementation in the way they did. I sure hope some supervisor gets canned, especially for letting a screw up this bad occur, especially since these are common sense solutions.

@kamana6435 5 лет назад

Very well produced, factual and interesting look at the 737 Max!! Keep up the high quality videos!! I just subscribed.

@josemarionate8905 5 лет назад

Why haven't you subscribed then?

@lasttrimestr49califos89 5 лет назад

This is an excellent video. ..very informative. It's easy to give a thumbs up

@TheLaMoFo 4 года назад

Excellent video man. Very informative, subbed!

@camf7522 5 лет назад

This is the best explanation I have heard. It’s the first time I have heard that the requirement for the MAX came direct from an airline rather than Boeing’s normal product development process. Meaning that the sales team rather than the engineering team would have been driving the development and delivery schedule.

@LGTheOneFreeMan 5 лет назад

Pan American wanted the 747 before they ever knew what it's model number would be... you could say it was conceived on a fishing trip. The problem is that the airline's kvetching for annudah small cheap plane forced Boeing to remodel their popular model line one more time and this caused it to fail spectacularly. They need to pull another 747 out from under their hat. They need to make a new narrowbody that meets the demand of the modern airlines that would, sadly, probably wind up taking the 737's place like how it took over for the 727.

@Sweetteawillie 4 года назад

Manufacturers build products mostly based on what the customer wants, period.

@TannishThomas 5 лет назад

I've been waiting for this video ever since the crashes happened, you are very current with your uploads on current news in transportation! Good stuff!

@an-tm3250 4 года назад

Thank you for good information that I did not know about the cost decisions & AA pressure on BA.

@ranashome24 4 года назад

Yeah. I agree it’s Criminal Negligence. They should be prosecuted, with exemplary punishment

@speedmedia9507 4 года назад

Sudipta Shome what about the dc10? Killed 10x more lives was worse than the max.

@fattylefreak7491 4 года назад

@Donald Kasper You don't think this is Boeing's problem? Have you seen the things Boeing *own* engineers said about the 737 Max in the leaked Boeing e-mails? They contain things like "This plane is designed by clowns directed by monkeys." And, one Boeing engineer asking another, "Would you let your family fly on this plane?" answer: "No!" Another thing pointed out is that Boeing isn't run by engineers anymore, but by businessmen who think of nothing but short-term *profit*.

@largol33t1 4 года назад

Sad that they have the US government by the balls so they'll get off scot-free. At least the world is watching them so they can't put that piece of crap back in the air. The plane has tarnished their image so badly that they're even considering never putting the word "max" next to newer modified planes. For example if they were going to name the next 777 the 777Max, they will strike off the name out of fear that people will refuse to fly it.

@kensurrency2564 4 года назад

Speed Media Yeah, Boeing and MD merged in the late 1990’s. There’s your problem.

@ThatGuy-te9wh 4 года назад

@@kensurrency2564 ah yes so the cargo door and forklift-engine disasters in the 70s are all Boeing's fault.

@SafeAndEffectiveTheySaid 5 лет назад

Meanwhile, Boeing's chairman keeps saying that it was the pilots fault.

@maxenceduhamel796 5 лет назад

Of course it is their fault, they have failed to execute the 6-steps process to desactivate the misleaded software, including the one foot clockwise turn and the rain dance they were not instructed and trained to do...

@onraj9mm 5 лет назад

Of course, the dead pilots can't defend themselves.

@neddelley8766 5 лет назад

@Thomas Headley getting people to ride in them however or any Boing Boing for that matter will be a different story.

@neddelley8766 5 лет назад

@Thomas Headley Yeah ya see that's where Boing Boing and I part company, "muddle thru" while killing people thru greed and then hiding the facts until after the second accident. No thanks, along with a lot of others I'll vote with my feet. Fuck Boeing, and fuck the FAA.

@neddelley8766 5 лет назад

@Thomas Headley You'd would whistle a different tune if it was your family or friends on a vertical flight path into the deck there chief.

@HDAviationVideos 5 лет назад

Great video! Thank you for going a bit deeper into the technical and design aspects.

@TheMrFishnDucks Год назад

Great documentary video. Keep up the good work.

@KDCLondon 4 года назад

great explanation of a complex set of corporate decisions & mistakes - by far the best I've seen - thanks

@smallfoot5689 5 лет назад

Boeing: We're gonna make a new airpla- American Airlines: Im gonna end this man's whole carreer

@nicoth.412 5 лет назад

I'm gonna end this plane's whole career before it even started😅

@khadizaahmed8989 5 лет назад

Imma about crash these plane and kill everyone in it!

@devinmccourty1500 5 лет назад

Might be my favorite wendover video ever, keep up the good work 👍

@mukrifachri 5 лет назад

I saw it live when they lifted one of the engine core from Lion Air flight 610 from the sea. That was the moment when I think to myself "holy crap, this is not normal". Then I heard of MCAS, and then I read the preliminary report of Ethiopian Airline flight 302 crash, in the events timeline... I know something horrible has been going on. I hope this expensive lesson is going to always be remembered upon by future corporations and industries. Safety might be expensive, but it's cheaper than having to deal with bad PR.

@tydjayowen6122 4 года назад

That's an AMAZING video ! Well done!!

@Akislav1990 5 лет назад

The quality of production on your videos is advancing by leaps and bounds. Is Skillshare really that good?

@AaaaNinja 5 лет назад

3:11 "Boeing has perfected the manufacturing process." A process that includes leaving tools and debris inside the frame.

@TurkishRepublicanX 4 года назад

lol is this true? :D

@TurkishRepublicanX 4 года назад

@Harry Lagom unbelievable. But wouldn't that hit everywhere and make a lot of noise while the plane is moving?

@karlosbricks2413 4 года назад

@@TurkishRepublicanX It's their factory in Renton, where the safety culture just isn't there and there have been loads of whistleblowers alerting us to how bad it is. Qatar airways won't accept any aircraft built there, that's how bad it is.

@dannybarcenas9701 4 года назад

Airline Mechs usually do those of course

@alexp3752 4 года назад

As a former airline EVP, aircraft buyer/production technical representative that's a really cheap, inaccurate lie, and you know it! Over years, I bought both Boeing and Douglas airframes, oversaw their production, major builds. finishing, inspection and flight testing. Almost everyone I have known takes extraordinary pride in their work knowing that people depend on the quality of their product. Shame on you.

@Petalslash 5 лет назад

Great video format and presentation. Well done.

@aniruddhakabbya622 4 года назад

And this video is on my Engineering ethics finals as a case study! good thing i already watched this video like 5 time before already

@nicimartin2987 5 лет назад

Brilliant video and everything is so well explained. Thank you!

@HungryTacoBoy 5 лет назад

3:36 That's Vancouver International Airport, specifically Gates 80-84, right to left, of Terminal E. That's a Canada Post building across the runway and in the background are the Rocky Mountains. Stereotypically enough, there's actually a Tim Hortons within the frame of this terminal right inside gate E84, the one above the docked leftmost Air Canada plane.

@nkosanakhumalo5976 5 лет назад

You have a supreme talent in story telling. Would love to have such a lecturer.

@crBudgetWatches 5 лет назад

Amazing video wished every other educational video explained things as clear as this one.

@ErnestJay88 5 лет назад

Wendover should collab with Real Life Lore again and making videos about Flying Toyota Corolla

@CahyoPrabowo 5 лет назад

aren't Wendover, Real Engineering, and Real Life Lore the same 'person' ?

@6z0 5 лет назад

JoelTheBeardSurvivor what do you mean “unrelated” lol, they are friends.

@6z0 5 лет назад

JoelTheBeardSurvivor and their channels are revolved around the same topics.

@6z0 5 лет назад

JoelTheBeardSurvivor I never said thy had a lot in common. You said they were “completely unrelated”. They arent completely unrelated but they dont have everything in common obviously. But they are friends & make the same types of videos. I’d say they are pretty related.

@shoam2103 5 лет назад

@@CahyoPrabowo had a similar reaction when I first subscribed. In my humble opinion, wendover is the best, followed by engineering and then lore

@rhyspatten9155 5 лет назад

Wix? Squarespace are going to be very annoyed at your unfaithfulness.

@andreacastaldi7213 5 лет назад

Not as much as Brilliant are gonna be

@hawkinsstern5356 5 лет назад

potentially enough to offer more money

@mcfitty9804 5 лет назад

@@andreacastaldi7213 Not as much as I are gonna be!

@andreacastaldi7213 5 лет назад

@@mcfitty9804 As HAI are gonna be

@brkitdwn 4 года назад

Great video and explanation. Really enjoyed it a lot!

@PlanesTrainsEverything 5 лет назад

Many thanks for an informative video. I hope the problems get ironed out soon.

@davevenson 5 лет назад

A company that designed a modern plane with a single point of failure should be OUT of business forever! This level of greed and stupidity must never be tolerated.

@runarandersen878 5 лет назад

This was interesting and educational. Well written.

@steveandrushko75 4 года назад

That was an outstanding video great job!

@BrettMcS 4 года назад

An incredibly clear and concise presentation.

@samib3589 5 лет назад

Wendover Productions need a video on the economics of Danny's Dragons, their fuel economy, capacity, routes etc

@RibusPQR 5 лет назад

Dragons get about 200 miles per cow, including takeoff and landing.

@christophervlaskamp7462 5 лет назад

As always a interesting and beautiful (the footage and graphics) wendover video AND about my favorite topic AIRPLANES. Also not many people say this but you have a good explaining voice and style (maybe it is just me)

@christophervlaskamp7462 5 лет назад

Just to be clear I don’t really care but in my “inbox it said that the comment has been harted but I don’t see it ANYMORE did wendover do this for a reason (again I do not care about the heart) or is it a bug or something

@thumtlnguyen3626 5 лет назад

Thank you so much for your video. I now know why MCAS is installed.

@colematthews6640 4 года назад

Every video you make is such gold.

@thelastcube. 5 лет назад

Dude, I already loved the previous thumbnail and now this? Please tell me that you're gonna make a series on logistics. The similar looking thumbnails are enough reason to make them imo

@kempo_95 5 лет назад

You want more logistic videos? He has done like every topic

@JoshKaufmanstuff 5 лет назад

Great video! If you want to throw up, watch the Boeing CEO Dennis Muilenburg dodge any blame in his latest press 'interview'.

@tomstravels520 5 лет назад

Josh Kaufman remind me of Donald trump. Just lies lies lies and pretend everything is fine

@MarloSoBalJr 5 лет назад

Bet he'll never set foot on a 737 MAX aircraft ever in his life, even if one was standing right next to him.

@InvestorAcademyPodca 5 лет назад

He has no choice, there are hundreds if not thousands of lawsuits being filed.

@gordonrichardson2972 5 лет назад

@Bob Wilson The Boeing CEO and chairman are the same person, so you only need one passenger on the flight..

@rogalcorn734 5 лет назад

@@tomstravels520 Found the desperate person trying to cram their political veiws into an unrelated video.

@paulfromperth5713 4 года назад

Very informative video by one of the best RU-vid channels. 👌

@melperry3576 4 года назад

boeing gave new meaning to the phrase "made in the usa"

@JJRicks 5 лет назад

The PDF417 code in the thumbnail says: "Wendover Productions: The Economics that Made Boeing Build the 737 MAX"

@JJRicks 5 лет назад

@Chrystal Wang Nothing, it's just an Easter egg :D

@evanhilton279 5 лет назад

JJRicks Studios, pretty cool

@FunnyHacks 5 лет назад

Interestingly, I can't find the video anymore that Boeing put out some time back about how they fixed flutter on the 747 (-8?). It is another case of fixing a hardware problem in software. There is a very brief mention that they addressed the problem in one of their other videos where they are summarising the tests it went through.

@fnnnknorth 5 лет назад

Well done! Great information.

@TheYeahok 4 года назад

A comprehensive explanation. Fantastic!

@maxmaxmaxmaxmaxmaxmaxmaxmax1 5 лет назад

0:52 You are incorrect. The 737MAX does not use direct connection to the flight control surfaces in normal flight. It goes through a system in the tail that physically separates the pilot controls from the control surfaces through a device known as the "Feel Unit"

@MatzWerk 5 лет назад

There is one more difference between modern aircrafts and the max, for such a crucial system like Mcas usually a aircraft has more than one sensors for this. At Airbus you see for some crucial systems even six sensors.

@rjfaber1991 5 лет назад

The odd thing is that the 737 does actually have two of these sensors, but MCAS only ever takes its data from a single sensor, which in terms of industry best practice is an appaling thing to do. Airbus always has at least two sensors, and for flight-critical parameters, they have at least three. Even just having the idea of letting a critical piece of automation take its input from a single sensor and pretending it's always reliable is beyond terrible...

@CT7ALW 5 лет назад

Also, normal auto-trim can be stopped if the pilots use the trimming switch against it. MCAS can't be stopped by manual trimming. Only by disable electrical trim altogether. And if it's too late, trimming mechanically is pretty much impossible...

@tomstravels520 5 лет назад

Robert Faber Airbus has 3 AIr Data References though because it’s then easy to see which system has failed. If an AOA sensor fails the pilots switch that system to the back up system and the plane flies normally

@tams805 5 лет назад

MCAS isn't crucial though. Well, until it's installed.

@rjfaber1991 5 лет назад

+Tams80 - If an automated system can take control of the engines, ailerons, rudder, elevators, flaps/slats or landing gear, I'll call that a "critical piece of automation" worthy of getting the input data right on at all reasonable costs...

@rocketman48 5 лет назад

great video and great info thanks Bill from Ireland

@YellowMushroom777 4 года назад

I learned so much from this! Thank you.

@keiming2277 5 лет назад

A380 stop production Boeing : haha.... 737max crashed Airbus :hahahahaha....

@adamp.3739 5 лет назад

Airbus: Pull the plug on the A380. It's not selling. Boeing: Ha! Who do you think you are--- **Boeing plane crashes** Airbus: HA! GET REKT SON

@Dear_Mr._Isaiah_Deringer 5 лет назад

Guys! people died. There are no *groundings* for laughter.

@CharalamposKoundourakis 5 лет назад

@@Dear_Mr._Isaiah_Deringer *is no ground Also lame joke.

@Dear_Mr._Isaiah_Deringer 5 лет назад

@@CharalamposKoundourakis It had to allude to the *grounding* of the plane, thus _are no groundings._ Otherwise _"is no ground(s)"_ would be correct, of course. It had potential, the construction was over complicated and not concise enough. That of the joke… 😁 _BaDum-Tzz… okay I see myself out._

@EpicAwesomesauce 5 лет назад

Airbus isn't laughing or taking advantage of this PR hellstorm.

@glost12311goduer 5 лет назад

I have an issue with the sweeping conclusion. I work in aviation and I believe that Boeing could ha e pulled off the design of the 737 max had they done it properly. The problem isn't that they didn't make a new design, it is that they hastily redesigned it and didn't give enough thought to how much the characteristics of the plane would change with the redesign. (My job btw is to service the engine fitted to that plane, The LEAP 1b as well as 1a/1c)

@TorianTammas 5 лет назад

It was cheaper for them to be lazy.

@freegge9156 5 лет назад

Apparently, it's not just about haste. Evidence and an insider points out that it's all deliberate, premeditated, company decisions. For example, the mistake to make a single sensor malfunction to be catastrophic is intended to get away with FAA rules to train new pilots. The decision to hide the existence of MCAS from pilots and airlines is also intended to make the 737 economically attractive to customers. The list goes on.

@kenoliver8913 5 лет назад

@@freegge9156 Spot on. Like most catastrophes the cause of these crashes was not one mistake but a whole string of them. And all were Boeing's, and all were deliberate decisions driven by $.

@manuhamoa 4 года назад

Boeing will have the chance to show what they're capable of when they build the NMA. Let's hope so!

@davecollings7722 4 года назад

Great video.Explains the issues with the 737 perfectly .

@ramixcws8023 5 лет назад

The 737 flight control surfaces are controlled by hydraulics, the cable system is a backup in the event of an emergency, not the primary method of controlling the flight surfaces. Manual reversion is the name of this system.

@billloesch1884 5 лет назад

Thank you, Ramix Cws for fact checking this presentation. I wonder what other facts were "massaged" in the presentation?

@EinkOLED 5 лет назад

The control column and rudder pedals are still cable connected and operated to the elevator/ailerons and rudder, but those movements are assisted with hydraulic actuators to relieve the aerodynamic forces that the pilot would normally encounter when moving the control surfaces. The only alternative to cable connected control surfaces is fly by wire. If in the unlikely event of system A/B and standby hydraulics loss and depletion of pressure, then the pilots on the 737 can revert to non hydraulic assisted movement of the primary control surfaces, which would require a lot of physical effort from possibly both pilots to operate (depending on the airspeed) with noticeable slower roll and pitch rate The 737 has the advantage over the airbus A320 in that the airbus has nothing to fall back on if it has a complete hydraulic loss of all it's systems, the aircraft may only be controllable using each engine.

@ramixcws8023 5 лет назад

This is partially correct, I appreciate your efforts to explain the system for other people to understand. You missed the fact that the flight controls are mechanically connected to the hydraulic system, independent of the cable system. The cable connection to the flight control surfaces is only used in the case of both hydraulic systems failing, as you stated, but is not the primary system used to control the flight controls.

@koditv9215 5 лет назад

And could they have disconnected he hydraulics to take control of the plane over MCAS, controlling it by cables?

@Bartonovich52 5 лет назад

Ramix CWS. The cables have to go all the way to the controls otherwise manual reversion won’t work. They would be tugging on dead PCUs which couldn’t move the flight controls. The ailerons actually have a single dual (A/B) system PCU in the wheel well and its all cables going into it from the wheel and going out to the wings. In the case of the rudder there is no manual reversion so there is the standby system in addition to A/B systems. Airbus and all other aircraft that don’t use manual reversion have triple redundant primary flight controls. For the Stab you have two motors and manually driven cables. No hydraulics. But from this accident the forces on the stabilizer were likely too great to overcome manually (the trim wheels on the Max are about 1 inch smaller in diameter than all other 737s) and the electric Stab trim reactivated the MCAS.

@contentedbuddha 5 лет назад

11:24 „Nobody would have guessed...“ Honestly? You think none of the engineers had second thoughts about overriding the pilots input based solely on the input of one sensor? In an industry that has redundancy in all other flight-critical systems?

@ocadioan 5 лет назад

Hell, I install automation programs in cement factories, and we _always_ stress that though our systems will give suggestions that should be able to be used as is, the operator can at any time choose to ignore our system's suggestion if he thinks that they are wrong. How any engineer decided to override the pilot's input without _very_ noticeably telling said pilots exactly what is happening is beyond me.

@manolopourikas6 5 лет назад

hello everyone. i just wanna say i'm a student in greece's air force and as a future aircraft engineer on f-16's this channel amazes me. ok bye.

@manolopourikas6 5 лет назад

@Yürüyen Ansiklopedi thanks for asking, it's going well 😃

@dimitrispalaskas9276 5 лет назад

Πληρώνεσαι?

@manolopourikas6 5 лет назад

@@dimitrispalaskas9276 στη σχολη πληρωνομαστε ενα συμβολικο ποσό, κανονικο μισθο με το που τελειωσει η σχολη.

@manolopourikas6 5 лет назад

No, but air force's academy is located in athens

@HGAMING-ve6cw 5 лет назад

my dads work literally uses your videos as examples for conferences :)

@janboezeroem3695 5 лет назад

no mater how beautifully portraited and beatuifull refebished.... this hand made hand tailed (partialy by computer - but major critical parts by HAND!!! ) BOTTOM LINE FLYING COFFINS!!!