How do FLAPS EXTEND on AIRPLANES? Explained by CAPTAIN JOE

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00:00 Intro
00:52 Flap Lever
02:48 Leading Edge Flaps
03:51 Trailing edge Flaps
05:12 Flap degrees
05:36 Hydraulic System
06:00 Flap Mode "Normal Operation"
07:00 Flaps in "Primary Mode"
09:30 Flap Lever Gates
10:50 After Landing
11:23 Outro
Dear friends and followers, welcome back to my channel, here at the Cargolux maintenance hangar, and to a video about the infamous Boeing 747 flap system. If you're a pilot, passenger or engineer, you'll appreciate this video series!
This will be part one of three, as we'll be looking at the flap controls within the cockpit and their indications on the EICAS.
How the flaps are moved, which systems are needed, what's inside the flap track fairing, and what so special about the flaps after landing?
(Part two will cover the protections and failures, and part three will be about the flap load relief!)
It's time to move some heavy metal, so let's get started!
We'll start with the controls within the cockpit first. The flap lever is on the control stand, positioned on the right side of the thrust levers. Very unique to Boeing is that the lever looks like a little wing. So in the event of heavy, dense smoke within the cockpit, you would find the lever just by touching it!
The flap lever can be placed into seven detents. Starting with the UP position, all leading and trailing edge flaps are retracted. What are those? You probably heard of slats before, such as on Airbus and other Boeing models. The 747 is a bit of an exception, calling the extending metal at the front of the wing "Leading-edge flaps" and "Trailing edge flaps" at the rear part of the wing.
Thank you very much for your time! I hope you enjoy this video!
Wishing you all the best!
Your "Captain" Joe
Big thank you to all other KZbinrs who provided me with the video material to create this video. Your content is highly appreciated.
Intro Song:
Lounge - Ehrling: www.youtube.com/watch?v=a5ImN...
Outro Song:
Joakim Karud & Dyalla - Wish you were here www.youtube.com/watch?v=UXrxB...
ALL COPYRIGHTS TO THIS VIDEO ARE OWNED BY FLYWITHCAPTAINJOE.COM ANY COPYING OR ILLEGALLY DOWNLOADING AND PUBLISHING ON OTHER PLATFORMS WILL FOLLOW LEGAL CONSEQUENCES

[@jl2481]

Whenever I fly commercial airlines I always sit behind the wing. I love to watch the wing work. It's brilliant engineering at its best. When we hit turbulence I'm amazed on how much the wing flexes. I enjoy watching the screwjacks lower the flaps. I can't wait to watch the oncoming 2 videos. Here's a suggestion, how about doing videos on landing gear and how they work. That's more incredible engineering. Thank you.

[@mark-ish]

kzbin.info/www/bejne/o6KzfnSEhKp6bbs

[@alunesh12345]

Believe in JESUS today, confess and repent of your sins. No one goes to heaven for doing good but by believing in JESUS who died for our sins. For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.(John 3:16)🥳❤️

[@mark-ish]

@@alunesh12345 Jesus is fake news swallowed up by the gullible.

[@flywithcaptainjoe]

Good idea with the landing gear!

[@milk-it]

Love this comment.

[@Duvstep910]

not a pilot nor an engineer but hope to go to flight school after i'm finished with university. Big up from Jamaica Captain Joe; love your videos

[@bravosierra3919]

Likewise Mate

[@bravosierra3919]

Best of luck

[@alunesh12345]

@@bravosierra3919 Believe in JESUS today, confess and repent of your sins. No one goes to heaven for doing good but by believing in JESUS who died for our sins. For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.(John 3:16)🥳❤️

[@TriNguyen-nl7qo]

@@alunesh12345 No.

[@bravosierra3919]

@@alunesh12345 thank you for sharing the good news of Holy Bible. Have a good day...

[@atubebuff]

One of the most informative videos on the subject! Thanks Capt.

[@alunesh12345]

Believe in JESUS today, confess and repent of your sins. No one goes to heaven for doing good but by believing in JESUS who died for our sins. For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.(John 3:16)🥳❤️

[@CrossfireBolt]

Throwin Ryanair under the bus 🤣🤣

[@iknebli]

Funny that in your videos it's always an Air Ryan that gets in the way of a 747 😁

[@LongnoseRob]

Finally we have explanation on how the flaps degrees are measured! Thank you

[@harrybassett9433]

I've gone from being terrified of flying to loving aviation because of content like this. I've even started flying in GA aircraft and hope to one day get my PPL. Thank you Joe!

[@ngaviation3489]

JOE, I have wanted to be a pilot since I remember, and I absolutely LOVE your videos! They are entertaining, and also educational! DANKE!

[@alunesh12345]

Believe in JESUS today, confess and repent of your sins. No one goes to heaven for doing good but by believing in JESUS who died for our sins. For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.(John 3:16)🥳❤️

[@adamcollins9404]

The 747-100/200 had an even more complicated leading edge flap system for reverse thrust, the 2 flaps closest to the inboard side of the engine stowed whilst the rest remained deployed, even more of a mind blower, great video for a former spanner turner 3 evolutions of 747 engineer, keep it up Joe, I miss the Queens in this age of fly by wire 👍🏻

[@CerealKiIIer]

Any chance of having a video explaining the difference between Airbus and Boeing flaps? Airbus seems to use a less complicated setup (at least in cockpit). Would be great to have insight about this.

[@TheLikeys]

Yes, that would be super interesting especially because Joe is a pilot for Airbus and Boeing models 💪

[@ZK-APA]

Its just different philosophies, based on design and requirement. But tldr is boeing gives you more options (ie more flexibility), airbus gives you more simplicity (ie ease of use)

[@alunesh12345]

@@TheLikeys Believe in JESUS today, confess and repent of your sins. No one goes to heaven for doing good but by believing in JESUS who died for our sins. For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.(John 3:16)🥳❤️

[@roichir7699]

There are some decades of engineering between the 747 and a A320 or more modern aircraft. Basically Airbus has more advanced aerodynamics on the flaps therefore can use less, saving weight and maintenance whereas Boeing sticks to simpler aerodynamics and therefore less development costs on this. But Boeing catches up on newer models.

[@hewhohasnoidentity4377]

@@roichir7699 absolutely not true. In terms of advancement, they are competitive with each having selling points and trade offs. For instance the 787 replaced the concept of using bleed air from the engines to pressurize the cabin. This gives the cabin cleaner air that can be better controlled for comfort. Most would agree this an advanced technology. Airbus designed fly by wire systems that take the input from the pilots and doesn't perform the requested action if the software thinks it is unsafe. This design philosophy is divisive. Most would agree it was and is a major advancement in technology. Boeing aircraft like the 737 and 747 appear to have less technological advancements than Airbus because Airbus didn't exist when these aircraft were designed. Both aircraft manufacturers have product lines that are a result of the circumstances of the time they were made. The A340 was an incredible aircraft that entered service into a world very different than it was designed for. It no longer had a reason to exist. The 737 MAX was an incredible advancement bolted onto a Model T, but it was a result of the circumstances of the time it was made.

[@DeviantOllam]

Joe, this video is one of your absolutely most beautiful ones yet. 🤩 I'm sure many other folk will hopefully realize... while all of your videos look polished, this one is exceptionally wonderful and the work you put in and the relationships you have cultivated which have allowed you to capture this kind of footage really shine as you bring us this knowledge today. Thank you for all you do. 👍✈️

[@wizardofhyd]

This is awesome Joe, I’ve always wondered about the flap operation but this was exceptional!

[@MarekMichalakMusic]

Fantastic video, Joe. Thanks so much for this! Can't wait for parts 2 and 3. As a kid I was always awestruck by the huge flaps the 747 had when coming in overhead to land, and it's probably one of the most easily distinuishable feature when seeing the plane from below. Great hearing your explanation how it works and showing some of the techy details we'd not normally see up and close like that when flying as passengers.

[@dianada6340]

I am absolutely not versed in aviation and piloting, but I am in love with you, Capitan Joe! You are very cheerful and energetic🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰

[@tigerrx7]

I used to do flight test on a B747 SP in Montreal and when we are on autopilot during cruise, I love to see the control surfaces adjust themselves to maintain KCAS and ALT. Such a beautiful sight. Beautifully done Joe!

[@milk-it]

Wunderbar, genau was Du schon gesagt hast! Boeing's engineering on the 747 has so much foresight and experience built into it. The 747 is, and probably always will be, my favourite commercial aircraft. Nochmals danke Dir Captain Joe für ein tolles und sehr aufmerksames Video! These nerd-bird, geek-out, videos are honestly the best!

[@haorry_potter1686]

Loving your videos captain! I always look forward to watch them! ❤️❤️

[@Eddyspeeder]

Wow, this felt like a personal masterclass. Thank you so much, Joe! And also to Cargolux yet again!

[@yahyahmdllh]

Wow. Your team production has improved A LOT. Well done, Captain!

[@landermolinoselejabarrieta]

As always, such a helpful video! Thank you for creating this kind of content!

[@donaldfields755]

Captain Joe, Thanks for the detailed explanation. At the beginning I was curious about the flap lever detents (2). You explained that very well. As a former F4-D crew chief, I never realized that the LEF were pneumatically extended. Thanks!

[@codingvio7383]

Thank you for showing the details, I didn't expect there to be so much engineering put into these flaps.

[@andrewwood9782]

Always love your videos. I run the fire section at my local airport and have just taken on a new trainee. Only last week was I teaching all about flaps and took him out to a preserved 747-400 which we have to point out what we had been discussing. I will show him this video to help consolidate his knowledge. Thanks very much

[@matthayward7889]

4.00 Sometimes I forget how improbably vast the 747 really is. Thank you Captain Joe for making this video, I look forward to the next two parts

[@gaz0463]

Just the usual quality and informative content. Big thumbs up!

[@Thomasmcse]

Thanks Joe for that great video with all the explanations! Won't find that very often. Can't wait for the next one!

[@zlm001]

This is the type of content your channel has been missing lately. Thanks for taking the time to film and put together all the gratuitous and salacious flap and plane video to go with your overview. Always amazed by how much the 747 changes its wing shape, and the huge angle when fully extended. Anyone know if a plane that's similar in this way? Always loved watching the wing during flight.

[@brimopm]

Wow! 34yrs as an airline pilot and I'm still amazed at the complexity and effectiveness of these systems. Wonderful explanation, systems description, graphics and live demonstration videos. Their use was thought through to the end of several possible scenarios and I'm so impressed they were designed largely in the 50's and 60's. Thanks to the brilliance of thousands in the production of these systems that our current day passengers choose to never open the window shade, complain the internet is spotty and expect a free upgrade on their next flight as a result, all while smirking through their N95 mask.

[@Nyck461]

Fantastic and very informative video. Joe explains everything in details. I love the engineering of the airplanes.

[@dennypollard8004]

Captain Joe, I am a FAA Designated Mechanic Examiner (DME) in the U.S. this was a great video on flaps and the different type and how they operate. I have the B-747 training books but real pictures are so much better than a single photograph. One subject all FAA A&P mechanics test on is flight controls and this really helps understanding for new students in aviation. Great video I have linked to your channel for students to follow along.

[@MasterHackerPenny]

A little story: I only learned about flaps once i accidentally press "F" in FSX, and after that i finally learned how to ACTUALLY takeoff since taking off in TNCM is always a nightmare for me :/ PS; Love the new Intro, Captain!

[@alunesh12345]

Believe in JESUS today, confess and repent of your sins. No one goes to heaven for doing good but by believing in JESUS who died for our sins. For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.(John 3:16)🥳❤️

[@MasterHackerPenny]

@@alunesh12345 what?

[@kernmesaproductions5837]

Alright, Joe. You got me waiting for that next video! Great job!

[@raailiatorramix5059]

another great video joe looking forward to more

[@bravosierra3919]

Hi Joe, Great Video. Can't wait for the next two parts...

[@pascalhousieaux474]

Amazing video Joe as usual Very detailed andsuper well explained. Thank you so much

[@MarceloTrindade1]

Great video! I'm looking forward to the next videos of this series and I hope you are planning other series like this, about the various other systems of an airplane.

[@StageManagerKieran]

I love this content SO much!!! The kid who once cut out of high school one afternoon to grab his first flying lesson is totally geeking out right now!

[@Michael.Chapman]

Love the flexible and Krueger flaps on the leading edge of the 747-the massive triple-slotted trailing Fowler flaps are mind-blowing on the -400 and earlier versions.

[@yutahestifirmani7684]

What an amazingly good video, when I was flying as a passenger and sitting by the window of the plane and looking out of the plane, the wings of the plane opened and closed, I thought about how it works, and now through this video I have found the answer. Thanks for your video Captain Joe and always looking forward your next video. ✈️

[@sabeillard]

Great video, Captain Joe! Congrats from Portugal 🙂👍🇵🇹

[@brianburchart7592]

Awesome series! Luv the details. Again a truely awesome video!

[@cynthiahopkins7090]

Joe, what a wonderful experience you are a good pilot, and it is well deception how to use the flaps when the take-off and landing of the airline. Thank you so much for your information. 👍😊

[@prs7001]

Commend your teaching skill...Knowing something is different, and explaining it in a simpler and understandable way is another....You are simply amazing.

[@bknagz]

I don't think I've ever been so excited for a 3-part series about flaps

[@kilianortmann9979]

AFAIK the 747 flap arrangement is unusually complex and powerful for an airliner. In the 70s there were not nearly as much large runways, so reducing the takeoff and landing distance as much as possible was important. The 747-8 got a redesigned wing with simplified flaps because in the meantime airports have caught up to the size of modern airliners.

[@TB-um1xz]

How did they simplified the flaps? They are the same. I will agree that the wing is more swept.

[@kilianortmann9979]

@@TB-um1xz Its a completely different layout, with dual element inner and single element outer flaps instead of the tripple element flaps used up to the -400.

[@joeycao4419]

Einfach wunderbar... Thank you so much for such a detailed explanation!

[@asianverse7313]

Captain Joe, thank you so so so so much for this video!!! When I took my VERY first flight back in the day, 1990 to be exact, I was a 7 year old little boy, I believe it was the 747-400(maybe) with South African Airways back in the day. It ALWAYS fascinated me how the wings extended upon landing, how the slats, trailing edge worked, etc. I used to fly VERY frequently between Taipei and Hong Kong between 2005 and 2015, those wing components never stopped fascinating me. Thank you SO MUCH for this video, it feels like the wing has LITERALLY been dissected for me, LOL. Love you Captain Joe as ALWAYS!!!!!

[@francowabongo]

Awesome video. I love the wing action in planes, especially the a380

[@dianericciardistewart2224]

Captain Joe, this was awesome!! The engineering of an airplane is just fascinating and incredibly well made! Thank you for an very educational video! Great explanation and detail!! PS. I like that you have Kennedy Steve's (Steve Abraham from JFK) voice in the opening segment!! So looking forward to the other episodes!! Stay safe out/up there!! 💕✈✈💕

[@brickmaster3589]

Just a casual Great captain joe video

[@ianjameshodges2999]

So very clear and informative .. I learnt a lot.. Thank you so much..

[@okieandy21]

I really enjoy your technical videos!!🙂

[@jcoghill2]

The variable camber flaps work through the monkey motion of all those linkages you see at 03:42 . The linkages connect to the fiberglass panels causing them to bend as they extend or retract. Their operation is a marvel of engineering I never tire of watching.

[@jort93z]

The fiberglass doesn't really bend.

[@e-money5851]

Love listening to this guy, so detailed!!

[@killefitz3536]

Very good video. I hope there will be even a part 4 showing the mechanics in detail like the rails and rods.

[@pedrosmith221]

Amazing video! I chuckled at the Ryanair part. 😀

[@luismh184]

As always, great lessons from Captain Joe

[@MhicaelLlayneMOng]

Joe, you're that one pilot that can teach me tons of things about aviaton and now I'm using the for games. Thanks for this free education Joe

[@nazeembenjamin]

Thank you Captain Joe always informative and useful information much appreciated

[@ki73]

Ein sehr eindrucksvolles, lehrreiches Video. Vielen lieben Dank.

[@Nilguiri]

What a great video, Joe: Interesting, informative and entertaining. I now have more knowledge about how flaps work than you could shake a stick at! Thanks, my friend.

[@josephcameron530]

Great video. So interesting and informative.

[@katimboallan4605]

Thank you capt Joe, this was very interesting and informative

[@serdip]

Fantastic video! Thanks so much for sharing your vast knowledge and expertise with a general audience. It certainly helps me have greater appreciation for the magnificent machines and outstanding personnel that make modern air travel safe, convenient and efficient. Thank you! In the really dumb questions department: if wings retracted and expanded towards and away from the fuselage, would the change in the amount of surface area affect the lift in an advantageous way? I imagine that even if there would be some theoretical benefit to having retractable wings, it would be very difficult to actually design and build them. Thank you.

[@alunesh12345]

Believe in JESUS today, confess and repent of your sins. No one goes to heaven for doing good but by believing in JESUS who died for our sins. For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.(John 3:16)🥳❤️

[@johnnypool2206]

Airplanes are absolutely amazing. I found out about airplanes and their attachments when I built a model airplane 12 years ago. After building it just before flying it, I was fascinated @ the servos and how they move the wing attachments to see what makes them fly. And when I travel on an airliner, I ALWAYS get a window seat just behind the the wing so I can observe the movements of the attachments. Maaaaan..these thing are amazing!!!

[@gonetoearth2588]

Wonderful video! The Queen is the most beautiful aircraft and her engineering amazing! Dankeschön!

[@Yasmine-gm6wv]

Best youtuber , i love your videos , my dream is to become a pilot and you motivate me so much , thank youuu !

[@ajalatobi9723]

Fantastic!!!! This is the Captain Joe we all want to see😫

[@cbwplanespotting2599]

Very informative video Captain. Thanks for sharing.

[@DarlesFlow]

Tnx to you Captain Joe i slowly overcome the fear of flying. Whenever there is turbulence or something us going on , u just remind my self of your videos and why is that happening. So from no way i am boarding a plane after watching your videos i can proudly say that i move from 0 to 10 flights a month. Tnx captain Joe for your help

[@elcastorgrande]

Great to have you back!

[@angierobinson5570]

I really love your videos Captain Joe they are so interesting you are brilliant 🥰👍🏻👏🏻

[@WillOneZeroZeroTwoFour]

Merci Capitaine Joe ! Always entertaining and fun to watch your videos. Greetings from Aix-en-Provence!

[@KevinWakliFitness]

Captain Joe To The World 🌍 Thank you for making me a pilot🙏

[@chrisipad4425]

Amazing video with the flags, thanks Captain Joe!

[@TheAditya1655]

Your videos are awesome. Nowdays whenever I am on flight, observe your points.

[@mattheisen77]

I always see Cargolux 747 taking off from Rio de Janeiro. Its always at night or dawn. Love the sound he makes even being in another city i can still see and hear it!

[@jangelbrich7056]

I think I wanted to know this since 40+ years ... thank You for all the details!

[@harshadk4264]

Thank you Captain Joe for this video..reminded me of the good times when tv was informative and comforting.

[@Skybound_travel]

I love your new intro

[@dalemtnbike9381]

Fascinating Joe! Thanks!

[@naveenswarnkar4180]

We appreciate your loving voice Sir as whole because no one like you on this planet Earth!!!

[@chard6649]

Gotta love this series

[@mainafamily3518]

Amazing CAPTAIN I GET ADDICTED TO YOUR CHANNEL

[@markuss3886]

Great explanation on the flaps and it's operating system. The back up drives for the L/E flaps is electrical power and the T/E flaps is also electrical.

[@EmmanuelGorand]

Great explanation thanks so much !

[@paddys1595]

Really great video and the most detailed and in-depth video about flaps I've seen so far. But I kinda missed Kelsey (74 Gear) in a Video, standing next to a 747.

[@Kargoneth]

What a complicated system of linkages and shafts. Pretty interesting. Thanks, Joe.

[@Kargoneth]

Alrighty. I made it to the end of the video. That was quite a ride.

[@Lam-s-Workshop]

Super interesting, looking forward to the next video

[@AlexRodrigues-ug6sh]

Thanks captain....thank's for sharing God bless

[@eddieharkin2550]

Loved this very much. Thanks.

[@stephen_101]

Wunderbar video mate!

[@kevinjuma9120]

Captain Joe my mentor pilot. Always a pleasure and honour to learn from.Good heaven, man you are a good teacher. You always make me feel like a pilot.How I wish you were my teacher when I start flying classes.Hats off for you Sir.Good job.

[@pauls5440]

Capitain Joe back again into an aircraft systems explanations :) I like it, that is the most interesting part for me

[@rriam_321]

thank you mr captain. Very important video for aviation students before state exam

[@jayakamalabeysekera8951]

It's great to watch this informative video👦. All the best captain Joe

[@ROUSH-01]

I love the new intro joe!

[@all-yw2yr]

not pilot, nor a airplane technician but God I love airplanes, thanks for the video and sharing that knowledge, good to see you captain Joe.

[@Pseudochick01]

SAME!!!! ✈️

[@onepairofhands]

great run through C.J.

[@mainafamily3518]

Your new LOGO is STUNNING