Another great video. An important feature of the Airbus (SAFRAN) landing gear design is the inverted shock absorber that keeps the seal out of the dirt where it can be degraded and eventually leak. Leaking landing gear struts on an Airbus are non-existent.
From my experience it isn't that rear to leak. We've changed the seals of more then 20 a320 neos and ceos only this winter. *Disclaimer: I work in base maintenance and all of the changes were not customer requests but due to leaks found during inspections.
Thank you very much! I have another amazing friend here that also makes this content. Check out @Zeto.r he is an incredible technician 👨🏻🔧 and a good friend.
Didn't know I'd learn of the features/differences of such landing gear this Saturday morning while I clean my kitchen. But now I have the knowledge lol and I love it. Thank you!
Great work Stig, your content is such a blessing, ive just started my journey of becoming an Amt, you've opened my eyes even more, with the content you present. Blessings bro. Greeting from jamaica🇯🇲🇯🇲🇯🇲🇯🇲
I’m thrilled to hear you are on this journey, we need more good mechanics.. keep up the good studies and you’ll be out here doing this work soon. Don’t hesitate to ask questions… That’s the greatest power you have… being curious and wanting to learn. 👍 I’ll see you on the line 🤙
I appreciate you so much .. and i know the vertical format 😅 is a bit annoying. But I post in Instagram TikTok and here So it’s becomes a challenge. And most things I film is with my phone on site. I suppose it caters more to the mobile phone users. I’ll try to do better in the future
I’m glad you got to experience both. Not many people do that. When you’re in the wheel well of the 737, try not to touch or lean on anything 😂. You won’t walk away clean 🤣
Me the same, I flew both types of aircraft, too. The first time when I was standing in the wheel well of the 737 when it was raining, I couldn't believe what I saw. The water was rinsing through the wheel well coming from the wings. OMG
Just remember the difference. The A320 you can stand under the belly on a 737 just duck underneath the belly or for shorter ones there's no need to duck.
Only thing omitted is the strut switch that tells many things the airplane is on the ground..rt main for the Boeing. All Boeing pilots should know this. When able, feel for the ground with the Left main..the right one will cause ground spoiler deflection and can ruin a nice landing.😊
You’re absolutely correct, the cable that runs up to the spoiler actuators to activate them it’s funny they only put it on one side 😅. Boeing doing Boeing things I suppose 😂
@@StigAviationand if I remember correctly...on landing..wheel spin up and strut compression,/sqwat switch..and some sort of timed relay. You can actually " fool the speed brake". On a really, really nice landing. The speed brake auto arm will just make a clutch sound but boards don't come out. Yes,,this landing can be done...but the pilot has to understand the whole system. You must land on the back side of the tires. 98% of today's pilots have no idea what I am talking about here 😮.
One good thing about the 737 is that the WOW sensors inhibit the stall warning so you don’t get a stall warning on the ground. Airbus inhibits the stall warning under 50kt IAS as far as I know. This has proved problematic in certain accidents, like AF447 for example, where erroneous airspeed information from frozen pitot tubes led to pilots discounting the stall warning because it was deemed unreliable. We know how that ended… 😢
The pilots’ errors were largely down to the plane misleading them and to a faulty pitot that the manufacturer knew was faulty. Pilot error is very useful when the pilots are deceased and you can’t say the part and plane makers knew.
Great video! I've been flying the A320 and 737 since 2000 for the competition, and I learned quite a bit in your video. Many thanks. Safe travels. Cheers.
Your videos are awesome..wish we had a real airplane part view when learning aircraft systems...i am so old, antique aviator, that i started out stsyems on " oil skins"
Hi Stigy…. I was wondering upon landing do they do more braking from reverse thrusters or wheels? Also tire balancing… I’m sure it’s not like automobile tires with wheel weights is it? TY Sir
It’s about 50/50. Also depends on length of runway and pilot. I seen super hot brakes because it was set to maximum braking and I seen cold brakes because the thrust reverser did all the work and braking was minimal. It’s a very dynamic situation where many factors come into play. As for balance of wheels. They come pre balanced from the overhaul shops. We don’t do that on the line.
Thrust reversers are most effective at high speeds (important to get them in quick, also why they’ll stow even though you’re still moving rather quickly.) In certain conditions, TRs do a lot of the work - ie. rain, snow, etc when braking action is poor (planes have an INSANE amount of inertia with a relatively tiny contact patch with the tires in which to transfer that energy.) I spoke with some crew (I believe it was Virgin America with one of their brand new A320s) and asked why they didn’t use any TRs at all, and they said it’s SOP to use moderate braking with their carbon brake-equipped Airbus fleet if conditions allow. It’s actually cheaper (they have excellent wear properties) than using the fuel and maintenance associated with deploying the reversers. 😳
Less than half the fleet at my company has brake sensors. Theres a flag that comes up in our landing data if we land heavy and or short runways and need min brake cooldown, usually 60m turn. Some of our aircraft have the temp sensors, but dont rise in temp that wildly. We use a carbon brake from France but believe were switching soon, so well see how that works.
@StigAviation They stop very well. The only oddity is they wear faster from small applications, so it's better to let the plane speed up then romp on it during taxi.
Geeky tech!!! more to go wrong, and another issue, the A319 main undercarriage leg has a TRUCK a single two wheel axle, not a bogie, like those on a skate board. A bogie is a strong frame mounting two or more axles and wheels in tandem one behind the other.
Yes and thanks for your kind comment, it is appreciated as an aeroplane undercarriage is like the foundations of a decent house. Get the foundations right, building the rest of the house is easy. I live barely thirty miles from the Dowty(Safran) factory, set up by its founder George Dowty in the early 1930,s. @@StigAviation
Regarding the A319 oleo leg not strut, its upside down shock absorber cylinder and seal, a unique ,practical solution. Keeping these important parts away from dirt and brake dust when operating from poor or loose surfaced runways. Looking like a Luvax friction shock absorber of a 1930 4,5 Litre Blower Bentley, the secondary damper not dampener on the torque scissors is a means of reducing 'pitter patter' when the tyres contact the runway before the aeroplane squats on the main oleos,. @@StigAviation
I like your videos very much!! :) But it would be nice if you can put some more nice facts in to them. Like how often the aircraft needs new brakes or tires :)
I try to do that in most cases. But to answer your question, brake and tire wear is unpredictable in the real world environments. Too many factors to consider.
What is Boeing's thinking in not providing cooling fan in the wheel? Because the wheel area is already full of axles, bearings, brakes, wheel speed measurement systems and possibly tire pressure and brake temperature measurement systems. Why add the weight and complexity of a dinky little fan to all the above? If turnaround time is important, provide the ground crew with some large fans they can use to cool the bakes. I have worked on the design of wheel based systems for both the A-320 and the 737 and the A-320 is a real pain from the design standpoint in that you have to accommodate the design to all the wheel options Airbus has offered over the years as well as the presence or absence of all the different cooling fans. We had to send an engineer overseas to Airbus for a week just to nail down the actual size and shape of the volume that was available for our equipment.
I don’t have a dispute in regards to this, remember, I’m just the maintainer of these aircraft. The manufacturer will do whatever they want to do in regards to design. I personally don’t have a problem with Airbus design, nor with Boeing design, it’s just different mentalities and different procedures. But for me at the end of the day, it’s just nuts and bolts.
From a maintenance point of view the brake fans can be a blessing but also a curse. With brake fans fitted, when the brakes are hot, the crew turn a switch on in the cockpit and the brakes cool down - simple. When we do a wheel change, the brake fan is now another thing to have to deal with. Ensuring the switch is tagged and CB’s are pulled so it doesn’t turn on while our hands are in there and extra parts to remove and install. Without brake fans fitted, when the brakes are hot we need to find the mobile brake cooling fans. Uses time to find, hopefully they have enough fuel in them and need to position them next to the wheel - not simple. Doing a wheel change, great, no brake fan components to deal with
Having been a captain on both 737 and A320 I tell friends traveling in less developed parts of the world if you have a choice between an airline operating 737s vs. A320s………..pick the one flying A320s !!!
My friend had to transition from the 737 to the 320 family and he said it was quite a revelation. Not only did it make his job easier (not just the primary flying aspect) but the architecture and software logic DO absolutely make it safer, you can seriously screw up and it’ll save your butt (just from stories and their training with the systems.)
11k views in 1 day on a technical video about landing gears LOL - that's how you know your making good stuff Stig. BTW how bad is the COL out there? Do a lot of LAX mechanics have beastly commutes or camp in an RV in the lot? I just got on at United at ORD, your videos are super helpful man.
Thank you so much bro.. I’m trying my best to spread the knowledge where I can. As for COL is not that bad.. if you live within your budget, it’s doable. The pay is good, no complaints about that and overtime is always available. No shortage of that for sure. Congratulations on the job in ORD, keep those beautiful UA birds flying 🤙
The putter tire is always exposed to the elements on the 737. But there is a rubber seal around it. You see it in the video. They look like black rubber mud flaps.
I do apologize, this is one of my older videos, I did not know how to film properly. If you have time check out the newer videos and you will see that I have correct that that issue.
The Lockheed Gear swings (specialy C-5 and F-104) are ... lets say "surprising". I Dont know, what they consume, before they think about the Gear but it must be erase all what you have learned of easy, simple and rugged design.
Notice that all tne bolts on the Airbus landing gear have been fitted and the lock wiring and cotter pins installed. You can tell by those simple observations it's never been in a Boeing factory.
@@StigAviation Boeing supposedly torque down all fasteners and use safety wire and cotter pins throughout the aircraft they design and manufacture. That's why sometimes doors fall off brand new aircraft in flight and other parts wobble a bit, ask Alaska Airlines how that works😁
@@andrewallen9993by design that is what BOEING do. It’s up to the factory workers to ensure they follow the correct procedures to ensure it’s assembled correctly. Hardly a design fault when the guy that assembles the product can’t do his/her job correctly
They are not like car brakes. The brake *assembly* has the rotors and stators as one unit and are replaced as a unit. That’s what the wear indicator pin is for, to see when the brake assembly requires replacing @3:00 Airbus and @5:23 Boeing
You joke but how often does a plane really need break cooling. Basically a rejected takeoff right, how often does that happen? Around 20 years ago I was told that one pound of additional weight costs an operator $50k in fuel over the planes lifetime. Probably closer to $100k now. Is it really worth it to haul three fans around for that situation?
@@Kandralla look, I just fixed these things, my opinion really means nothing. I have no problem with changing wheels that have brake fans or that do not have brake fans. It’s all the same to me. I still have fun.
Usually manufacturers say 200-250 landing. Sometimes more. But that’s in a perfect world scenario. In reality it’s unpredictable because there are to many factors to consider.
@@StigAviationwhy do you favor the 777 over the 787 or even 767? I figured the 787 would be the favorite as it’s the latest and greatest……..and damn sexy.
Those are the only 2 narrow body aircraft you can compare. Nothing else is in the same class. I mean we can squeeze the 757 in there but that thing is in its own category at this point. Nothing can touch it.
As an A&P myself Boeing didn't do it because it adds weight and cost to the aircraft, and they are really not that necessary and the amount of time they save is not really worth it.
Well most 737 have no brake temperature sensors so that sums up Boeing's way of solving problems. The problem is so little that the 737 FCTM recommends the pilots to brake in pulses during taxi to avoid overheating the brakes and tyre sidewalls. Also they recommend to release the parking brake after the wheel chocks are in to allow the brakes to cool down. On a symposium Boeing once said an "accurate" way of telling if the brakes are hot is for the captain or first officer, after the plane is on block to put their hand on the wheel hub and if they can't do so without burning their hands the brakes are to be considered hot and adequate counter measures need to be taken, without precising what that would be. Peak engineering. Also ergonomics for ground personell is way better around an A320
I flew a 737-300 for years and only one of the 20 or so different airframes I flew had brake temp gauges. So we never knew if the brakes were hot or not. Ignorance is bliss.
Our B737’s used to have steel brakes but we retrofitted carbon brakes. The steel ones were disintegrating. There have been the odd occasion when brakes fans have been required - but not many. Usually in the middle of summer, auto brake on MAX, and a lot of taxing
I don't know which is Airbus has the feature but doesn't have it added on by some of the airlines Boeing don't have it so therefore they don't add it on
I wonder what would happen if a pressurised aircraft cruising at 38,000 feet had a tire blow up inside the wheel well. It sure looks like there is a whole lot of mechanical devices in there,surely vital to aircraft control... . Humm... Ladies and gentlemen, we have just right aileron control available, so we'll spiral down safely toward our destination.
It would never happen because tires and wheels have over pressure plugs and thermal fuses to release the air pressure out before the tire reaches blow out limits.
Something similar has happened to Boeing planes more than once. Damaged tires retracted with those steel wires hitting everything inside the compartment and causing catastrophic damage to hydraulics. The little thing to stop tires spinning is a cheap Boeing solution to that problem.
I have no idea how you can compare or EVEN relate a door on a Max to a video that’s dedicated to landing gear. 🤦🏻♂️. Just have some common sense and when you comment on a video make sure it’s related to the context of the video. Otherwise you can go find a 737 max door video and copy and paste your comment over there. Thanks 👍
That I can to an extent. It’s impossible to remember it all, I also work on the 777 and the 787, but that’s why we have manuals I can reference all the time.
I think at this point, most of it is subcontracted to third-party vendors, Bugatti Safron and many others but all of it is built within spec of the manufacturer
Brake fans ??? ………..Brake fans ??? ………Are you f*cking kidding me? 737 doesn’t even have brake temperature gauges !!! How would you ever know when to use brake fans ???????
@@StigAviation The Airbus has brake temperature gauges in the cockpit. You can see the brake temps. Boeing you have no idea ! No brake temp display in the cockpit.
@@savagecub yes because it’s an option that the carriers don’t buy. There are temp sensors that can be installed as well as tire pressure sensor. Just options. That’s all
@@StigAviation I have operated-300s, 500s, 700s,800s &900s for two different airlines. Never seen brake temp gauges. I don’t even know where Boeing would put them since there’s no EICAS in the 737. I have however operated A320s for an airline that did not buy brake fans. At least though we the had temp gauges so we could at least see when the brakes were getting hot.
My friend, I completely understand what you’re coming from, but you’re comparing two different manufacturers that have two completely different mindsets and options. Either way break temperature is obviously important but not as important to Boeing on a 737. But take a look at the 787. Completely different perspective right!
Another great video. An important feature of the Airbus (SAFRAN) landing gear design is the inverted shock absorber that keeps the seal out of the dirt where it can be degraded and eventually leak. Leaking landing gear struts on an Airbus are non-existent.
You are correct. But I have seen it lean very rarely. Good news is that it has a built in secondary seal that we can activate. Smart design.
From my experience it isn't that rear to leak. We've changed the seals of more then 20 a320 neos and ceos only this winter. *Disclaimer: I work in base maintenance and all of the changes were not customer requests but due to leaks found during inspections.
You make the best aviation maintenance content on RUclips. I hope you keep making content! Great work.
Thank you very much! I have another amazing friend here that also makes this content. Check out @Zeto.r he is an incredible technician 👨🏻🔧 and a good friend.
Didn't know I'd learn of the features/differences of such landing gear this Saturday morning while I clean my kitchen. But now I have the knowledge lol and I love it. Thank you!
The more you know. 👍 one day it will be useful to you.
Stig, the depth of your knowledge never ceases to amaze me 😊
Thank you so much sir, but I’m still learning every day.
Thanks for making these videos Stig ! I love airplanes and because of you I can learn about things I would never have learned otherwise.
I’ll keep trying to show and teach more about these beautiful aircraft. Thank you for being here.
Brilliant content. Thank you! 🤓✊
Glad you enjoyed it!
Man, I would love to hang out and watch you guys do a gear check. How freaking awesome!
It’s definitely a lot of fun
Great info Stig, thanks for explaining the systems so clearly.
My pleasure!
Great work Stig, your content is such a blessing, ive just started my journey of becoming an Amt, you've opened my eyes even more, with the content you present. Blessings bro. Greeting from jamaica🇯🇲🇯🇲🇯🇲🇯🇲
I’m thrilled to hear you are on this journey, we need more good mechanics.. keep up the good studies and you’ll be out here doing this work soon. Don’t hesitate to ask questions… That’s the greatest power you have… being curious and wanting to learn. 👍 I’ll see you on the line 🤙
Great info! The amount of grease and grime coming off of the various seals and all over the wheels and wheel well triggers my OCD.
Ohh trust me I know how you feel. But it’s just the nature of the aircraft. Always dirty 😆
Why am I not surprised I like the Airbus design better. I guess 20+ years of innovation is a good reason.
They make a fine product 👌
Commenting just to help boost the algorithm because Stig definitely deserves it, despite the fact he films vertical in “Tik Tok” format
I appreciate you so much .. and i know the vertical format 😅 is a bit annoying. But I post in Instagram TikTok and here So it’s becomes a challenge. And most things I film is with my phone on site. I suppose it caters more to the mobile phone users. I’ll try to do better in the future
Having flown both types. I found this very informative. Thank you! I miss sticking my head in the 737 wheelwell when it's raining.
I’m glad you got to experience both. Not many people do that. When you’re in the wheel well of the 737, try not to touch or lean on anything 😂. You won’t walk away clean 🤣
Very stylish umbrella for sure.
Me the same, I flew both types of aircraft, too.
The first time when I was standing in the wheel well of the 737 when it was raining, I couldn't believe what I saw. The water was rinsing through the wheel well coming from the wings. OMG
Just remember the difference. The A320 you can stand under the belly on a 737 just duck underneath the belly or for shorter ones there's no need to duck.
I’m one of the short ones 😅😂
Only thing omitted is the strut switch that tells many things the airplane is on the ground..rt main for the Boeing. All Boeing pilots should know this. When able, feel for the ground with the Left main..the right one will cause ground spoiler deflection and can ruin a nice landing.😊
You’re absolutely correct, the cable that runs up to the spoiler actuators to activate them it’s funny they only put it on one side 😅. Boeing doing Boeing things I suppose 😂
@@StigAviationand if I remember correctly...on landing..wheel spin up and strut compression,/sqwat switch..and some sort of timed relay. You can actually " fool the speed brake". On a really, really nice landing. The speed brake auto arm will just make a clutch sound but boards don't come out. Yes,,this landing can be done...but the pilot has to understand the whole system. You must land on the back side of the tires. 98% of today's pilots have no idea what I am talking about here 😮.
Used to be a Boeing fan, but this channel is making me kind of an airbus guy
I work both Scare Buss & Being. 33 years. The Scare Buss is a nightmare to work on.
I think both are good. I have no problems with airbus or Boeing. Both easy to work on
One good thing about the 737 is that the WOW sensors inhibit the stall warning so you don’t get a stall warning on the ground. Airbus inhibits the stall warning under 50kt IAS as far as I know. This has proved problematic in certain accidents, like AF447 for example, where erroneous airspeed information from frozen pitot tubes led to pilots discounting the stall warning because it was deemed unreliable. We know how that ended… 😢
Ya that was a bad one on 447. But that wasn’t the only factor that contributed to the incident. So many things went wrong and lots of pilot error.
The pilots’ errors were largely down to the plane misleading them and to a faulty pitot that the manufacturer knew was faulty. Pilot error is very useful when the pilots are deceased and you can’t say the part and plane makers knew.
Once again great content! Keep them videos coming. Cheers!!
Thanks, will do!
Great video! I've been flying the A320 and 737 since 2000 for the competition, and I learned quite a bit in your video. Many thanks. Safe travels. Cheers.
Glad it was helpful. Thank you very much for watching
Your videos are awesome..wish we had a real airplane part view when learning aircraft systems...i am so old, antique aviator, that i started out stsyems on " oil skins"
I’m glad you are enjoying these. Thank you for being here.
Hi Stigy…. I was wondering upon landing do they do more braking from reverse thrusters or wheels? Also tire balancing… I’m sure it’s not like automobile tires with wheel weights is it? TY Sir
It’s about 50/50. Also depends on length of runway and pilot. I seen super hot brakes because it was set to maximum braking and I seen cold brakes because the thrust reverser did all the work and braking was minimal. It’s a very dynamic situation where many factors come into play. As for balance of wheels. They come pre balanced from the overhaul shops. We don’t do that on the line.
Thrust reversers, not reverse thrusters :)
Thrust reversers are most effective at high speeds (important to get them in quick, also why they’ll stow even though you’re still moving rather quickly.)
In certain conditions, TRs do a lot of the work - ie. rain, snow, etc when braking action is poor (planes have an INSANE amount of inertia with a relatively tiny contact patch with the tires in which to transfer that energy.)
I spoke with some crew (I believe it was Virgin America with one of their brand new A320s) and asked why they didn’t use any TRs at all, and they said it’s SOP to use moderate braking with their carbon brake-equipped Airbus fleet if conditions allow. It’s actually cheaper (they have excellent wear properties) than using the fuel and maintenance associated with deploying the reversers. 😳
So cool, great video.
Thank you! Cheers!
Thank you brother stig
My pleasure
I was watching this in a dark room and that first diagram nearly blinded me
My apologies on that, I don’t know why it came out so bright.
Just learned something new, thanks!😊
Happy to help!
Thank you for this insightful videos.
My pleasure!
are each planes tires psi fairly equal or does it vary by mtow?
They vary from aircraft to aircraft. But I’m general most are around 200 psi.
Stig, I was wondering if the engine PMA needs to be change often?
Very rarely that fails.
Thank you Stig!!!
Wish you would’ve showed us retraction and extension on the 737 as well as the A319
I will next time we do a 737 gear swing
Do an A330 that is an interesting shortening mechanism everyone would appreciate.
Unfortunately, we don’t fly the 330 anymore, they’ve been decommissioned. But the mechanism you were talking about is actually very fascinating.
The shorting mechanism is a design wonder 👍
Awesome video. It would be cool to see the rare Indian spec quad A320 bogie but they're all in the boneyard now 😢
It’s very rare to see those, I actually made a video on this, not too long ago, it’s on Instagram, but I will repost it right here.
Good job. You forgot about the Hydraulic cart and struts use mil 56 instead of skydrol. But good job as always.
My apologies I overlooked that fact. Thank you for your knowledge.
Never "tire" of watching ur vids.
hahaaa
😅. Thank you
Thanks bud, this is great content and good depth and detail!
Glad you enjoyed it! Thank you for watching
Less than half the fleet at my company has brake sensors. Theres a flag that comes up in our landing data if we land heavy and or short runways and need min brake cooldown, usually 60m turn.
Some of our aircraft have the temp sensors, but dont rise in temp that wildly.
We use a carbon brake from France but believe were switching soon, so well see how that works.
Most pilots I talk to seem to enjoy the carbon brakes. They say they can feel the difference
@StigAviation They stop very well. The only oddity is they wear faster from small applications, so it's better to let the plane speed up then romp on it during taxi.
It’s all about the settings of what pilots put in. You also have to taken into consideration runway length
Just subscribed to your channel couple weeks ago. Great videos brother
Thank you very much. I’m glad you are enjoying them. I appreciate you being here
Geeky tech!!! more to go wrong, and another issue, the A319 main undercarriage leg has a TRUCK a single two wheel axle, not a bogie, like those on a skate board. A bogie is a strong frame mounting two or more axles and wheels in tandem one behind the other.
I’m glad you are very knowledgeable about the subject
Yes and thanks for your kind comment, it is appreciated as an aeroplane undercarriage is like the foundations of a decent house. Get the foundations right, building the rest of the house is easy. I live barely thirty miles from the Dowty(Safran) factory, set up by its founder George Dowty in the early 1930,s. @@StigAviation
Regarding the A319 oleo leg not strut, its upside down shock absorber cylinder and seal, a unique ,practical solution. Keeping these important parts away from dirt and brake dust when operating from poor or loose surfaced runways. Looking like a Luvax friction shock absorber of a 1930 4,5 Litre Blower Bentley, the secondary damper not dampener on the torque scissors is a means of reducing 'pitter patter' when the tyres contact the runway before the aeroplane squats on the main oleos,. @@StigAviation
So cool. I love landing gear.
Back in the old days, we used to call them, Landing legs 🤣🤣
The hdr of this video burned my retinas but it was worth it
My apologies on that. I didn’t realize it was so bright
I like your videos very much!! :)
But it would be nice if you can put some more nice facts in to them. Like how often the aircraft needs new brakes or tires :)
I try to do that in most cases. But to answer your question, brake and tire wear is unpredictable in the real world environments. Too many factors to consider.
Beatifully portalen, Nice....
Portraited
Thank you! Cheers!
Cool video.
Thank you
Excellent thank you
Glad it was helpful!
Sir can you please tell me ,B737 NG landing gear it is a an angle, but Airbus it is almost 90 degrees angle
They both have a slight forward angle.
What is Boeing's thinking in not providing cooling fan in the wheel? Because the wheel area is already full of axles, bearings, brakes, wheel speed measurement systems and possibly tire pressure and brake temperature measurement systems. Why add the weight and complexity of a dinky little fan to all the above? If turnaround time is important, provide the ground crew with some large fans they can use to cool the bakes. I have worked on the design of wheel based systems for both the A-320 and the 737 and the A-320 is a real pain from the design standpoint in that you have to accommodate the design to all the wheel options Airbus has offered over the years as well as the presence or absence of all the different cooling fans. We had to send an engineer overseas to Airbus for a week just to nail down the actual size and shape of the volume that was available for our equipment.
I don’t have a dispute in regards to this, remember, I’m just the maintainer of these aircraft. The manufacturer will do whatever they want to do in regards to design. I personally don’t have a problem with Airbus design, nor with Boeing design, it’s just different mentalities and different procedures. But for me at the end of the day, it’s just nuts and bolts.
From a maintenance point of view the brake fans can be a blessing but also a curse.
With brake fans fitted, when the brakes are hot, the crew turn a switch on in the cockpit and the brakes cool down - simple. When we do a wheel change, the brake fan is now another thing to have to deal with. Ensuring the switch is tagged and CB’s are pulled so it doesn’t turn on while our hands are in there and extra parts to remove and install.
Without brake fans fitted, when the brakes are hot we need to find the mobile brake cooling fans. Uses time to find, hopefully they have enough fuel in them and need to position them next to the wheel - not simple. Doing a wheel change, great, no brake fan components to deal with
Having been a captain on both 737 and A320 I tell friends traveling in less developed parts of the world if you have a choice between an airline operating 737s vs. A320s………..pick the one flying A320s !!!
The 320 is definitely the smarter airplane, that’s for sure
My friend had to transition from the 737 to the 320 family and he said it was quite a revelation. Not only did it make his job easier (not just the primary flying aspect) but the architecture and software logic DO absolutely make it safer, you can seriously screw up and it’ll save your butt (just from stories and their training with the systems.)
11k views in 1 day on a technical video about landing gears LOL - that's how you know your making good stuff Stig. BTW how bad is the COL out there? Do a lot of LAX mechanics have beastly commutes or camp in an RV in the lot? I just got on at United at ORD, your videos are super helpful man.
Thank you so much bro.. I’m trying my best to spread the knowledge where I can. As for COL is not that bad.. if you live within your budget, it’s doable. The pay is good, no complaints about that and overtime is always available. No shortage of that for sure. Congratulations on the job in ORD, keep those beautiful UA birds flying 🤙
Does the 737 have bladders that inflate around the outer tire when they are stowed? I think I hear d that somewhere.
There aren’t bladders that inflate, rather a rubber seal that forms a friction fit for improved aerodynamics
The putter tire is always exposed to the elements on the 737. But there is a rubber seal around it. You see it in the video. They look like black rubber mud flaps.
Thank you
👍
Brilliant 👍👍👍
Thank you 🙏
awesome..more 737 vids please
Check out my videos my friend, I got plenty of 737 content for you.
Awesome video - just discovered the channel.
Welcome aboard! Glad to have you here.
Thank you!!
👍
You know you can hold your camera sideways so the picture is bigger?
I do apologize, this is one of my older videos, I did not know how to film properly. If you have time check out the newer videos and you will see that I have correct that that issue.
Not an Airbus fan, but I like their system more.
It’s a very smart aircraft, and the systems are made to be very maintenance friendly.
The Lockheed Gear swings (specialy C-5 and F-104) are ... lets say "surprising". I Dont know, what they consume, before they think about the Gear but it must be erase all what you have learned of easy, simple and rugged design.
I could imagine the complexity of the C5 itself, the way it gear retract is absolutely incredible
Notice that all tne bolts on the Airbus landing gear have been fitted and the lock wiring and cotter pins installed. You can tell by those simple observations it's never been in a Boeing factory.
But Boeing also uses lock wire and cotter pins on a variety portions of their landing gear as well
@@StigAviation Boeing supposedly torque down all fasteners and use safety wire and cotter pins throughout the aircraft they design and manufacture.
That's why sometimes doors fall off brand new aircraft in flight and other parts wobble a bit, ask Alaska Airlines how that works😁
@@andrewallen9993by design that is what BOEING do. It’s up to the factory workers to ensure they follow the correct procedures to ensure it’s assembled correctly. Hardly a design fault when the guy that assembles the product can’t do his/her job correctly
You make this stuff understandable. Thanks for taking the time to explain it. God bless!
My pleasure. Thank you for taking time to watch. Glad you enjoyed it.
How often do u have to change the brake pads and is there a rotor that has to be serviced
It’s unpredictable. To many factors to consider.
They are not like car brakes. The brake *assembly* has the rotors and stators as one unit and are replaced as a unit. That’s what the wear indicator pin is for, to see when the brake assembly requires replacing @3:00 Airbus and @5:23 Boeing
Great vídeo
Thank you
Most important difference, how short 737 gear is. Easier loading but hard to put bigger engines without dragging on ground.
That’s why on the 737 max they had to raise the nose gear to accommodate for the larger engine
@@StigAviation Yes, the 737s advantage over many years caught up with it and gear had to be changed.
Boeing does have wheel brake cooling systems in place. If the brake overheats the wheel comes off and rolls away to expose the brakes to cooling air.
😅😂😂
You joke but how often does a plane really need break cooling. Basically a rejected takeoff right, how often does that happen? Around 20 years ago I was told that one pound of additional weight costs an operator $50k in fuel over the planes lifetime. Probably closer to $100k now. Is it really worth it to haul three fans around for that situation?
@@Kandralla look, I just fixed these things, my opinion really means nothing. I have no problem with changing wheels that have brake fans or that do not have brake fans. It’s all the same to me. I still have fun.
I am suprised AA uses SAFRAN landing gears in A320 fam rather than Collins.
I suppose it’s because where the aircraft was built
If an airline buys an A320 series aircraft, it will come with a Safran Landing Systems MLG. We are the sole supplier on this program.
How many landings does a tire last? they take a pounding, right?
Usually manufacturers say 200-250 landing. Sometimes more. But that’s in a perfect world scenario. In reality it’s unpredictable because there are to many factors to consider.
@@StigAviation 200-250 landings, that about 2 months worth? planes fly about 4-6 times a day right? At least the narrow bodies.
@@MrGuzmanra yup. That’s about right 👍
The tyres do get retreaded, so the actual tyre lasts longer than 2 months
We get smarter everyday. 👍
Every day is a school day. Even for me. 👍
Vertical video?
Sorry. Old video. Check my new ones. I improved
I prefer the Airbus on Landings, wayy smoother!
Same here
Wow, I thought that the brake fan was standard equipment in all airliners.
It’s purely an Airbus feature.
It’s a customer option from Airbus
Since you're at a hub can you also work on regional jets or is it strictly mainline aircraft?
I only work on the mainline birds. There’s separate mechanics that work the regionals
How long have you worked at JFK?
I never worked at JFK. I’m at LAX.
Do You have a favourite aircraft, if yes, what would it be?
btw. greetings from germany!
His fav is A321Neo
737NG
The A321 Neo for narrow body and B777 for wide body. And when I say favorite it’s from a maintenance perspective
@@StigAviationwhy do you favor the 777 over the 787 or even 767? I figured the 787 would be the favorite as it’s the latest and greatest……..and damn sexy.
@@cruisinguy6024787….meh
737 is ground hugging landing gear,whereas 319,320 is high standing gear,they can't be compared.
Those are the only 2 narrow body aircraft you can compare. Nothing else is in the same class. I mean we can squeeze the 757 in there but that thing is in its own category at this point. Nothing can touch it.
I think I know why Boeing did not put the coolers in their brakes.
Tell me ?
post the MDG/BID number Be good to see the serial
I’ll try to get that next time.
Some indian A320's have dual bogey gear
Yes they do, very few of them left actually active. I have a old video I made about it. I might post it
As an A&P myself Boeing didn't do it because it adds weight and cost to the aircraft, and they are really not that necessary and the amount of time they save is not really worth it.
Yup, that pretty much sums it up. Although it is nice to be able to cool it down faster when you have a brake or wheel change 😅
Well most 737 have no brake temperature sensors so that sums up Boeing's way of solving problems. The problem is so little that the 737 FCTM recommends the pilots to brake in pulses during taxi to avoid overheating the brakes and tyre sidewalls.
Also they recommend to release the parking brake after the wheel chocks are in to allow the brakes to cool down.
On a symposium Boeing once said an "accurate" way of telling if the brakes are hot is for the captain or first officer, after the plane is on block to put their hand on the wheel hub and if they can't do so without burning their hands the brakes are to be considered hot and adequate counter measures need to be taken, without precising what that would be.
Peak engineering.
Also ergonomics for ground personell is way better around an A320
I guess Airbus actually puts engineering ahead of CEO salary incentives.
Can you do the fan with the wheel hub exposed in flight?
@@danielbond9755 what?
Both are safe? U sure about that
Yes. I’m sure about that.
Boeing didn’t put brake fans on because the 737 doesn’t need brake fans. I’ve been flying it for years and never had hot brakes.
Because the 737 is not as heavy. Also most 737 have steal brakes, and the fans help with a quicker turnaround time with the Airbus.
I flew a 737-300 for years and only one of the 20 or so different airframes I flew had brake temp gauges. So we never knew if the brakes were hot or not. Ignorance is bliss.
Our B737’s used to have steel brakes but we retrofitted carbon brakes. The steel ones were disintegrating. There have been the odd occasion when brakes fans have been required - but not many. Usually in the middle of summer, auto brake on MAX, and a lot of taxing
Well I learnt something new. I did not realise that 737's had gear doors.
The more you know 👍
Same principle as a umbrela only complicated in nature
That’s actually a really good analogy 👌
You use A319 in the title but show a nose gear retraction with A321 on the door. Also, Air India operates A320s with twin axle mains.
I should’ve made it clear and said 320 families. I’ll edit it. Thank you for your help.
I don't know which is Airbus has the feature but doesn't have it added on by some of the airlines Boeing don't have it so therefore they don't add it on
Yup. That’s about right. Just an additional feature
I wonder what would happen if a pressurised aircraft cruising at 38,000 feet had a tire blow up inside the wheel well. It sure looks like there is a whole lot of mechanical devices in there,surely vital to aircraft control... . Humm... Ladies and gentlemen, we have just right aileron control available, so we'll spiral down safely toward our destination.
It would never happen because tires and wheels have over pressure plugs and thermal fuses to release the air pressure out before the tire reaches blow out limits.
Something similar has happened to Boeing planes more than once. Damaged tires retracted with those steel wires hitting everything inside the compartment and causing catastrophic damage to hydraulics. The little thing to stop tires spinning is a cheap Boeing solution to that problem.
@@samueldavila2156 you’re talking about the 737 Frangible fitting.
Airbus seems better in terms of simplicity and funcionality..
It’s a very user friendly aircraft
Why I am watching that 😂….
Because it’s fun. And thank you for watching. I appreciate you
biggest difference is the Boeing always has a few bolts missing
😅 man oh man. Poor Boeing can’t catch a break lately
Both but NOT the COMAC CHINA😂😂
I could see the 737 max it’s the one with the door missing😂
I have no idea how you can compare or EVEN relate a door on a Max to a video that’s dedicated to landing gear. 🤦🏻♂️. Just have some common sense and when you comment on a video make sure it’s related to the context of the video. Otherwise you can go find a 737 max door video and copy and paste your comment over there. Thanks 👍
3:50 cause brake fans are not really necessary 99% of the time.
That’s why they are offered as an option. But most carriers buy the option
Our airline has them fitted on the A330. The brake fans are used a lot
Looks like my John Deere .
Let’s just paint it all green and yellow 😅👍
I am 100% confident that you can name (or at least recognize) every single part in a 737NG or A320 family aircraft
That I can to an extent. It’s impossible to remember it all, I also work on the 777 and the 787, but that’s why we have manuals I can reference all the time.
BRAKE RADIAL PISTON ASSEMBLY FINALLY RADIAL ENGINE GOT JOB IN AIRCRAFT BRAKE JOB😂
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I dont believe boeing makes any of their own landing gear not sure about Airbus.
I think at this point, most of it is subcontracted to third-party vendors, Bugatti Safron
and many others but all of it is built within spec of the manufacturer
Where the taxi and run videos
what?
I think dude is a mechanic. Most I think he does is tow. He may do check rides too though.
Mechanic well if he has is taxi and run license I do
I’ll do a taxi video one of these days. I have one for brake riding on my page if you wana see that.
I have also taxi/ run up qualifications as well. We do maintenance taxis.
Airbus landing gear remains in place. Boeing not so much…
Can you elaborate on your comment, what do you mean by that?
🛞🛞💪🏻
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Airbus is a superior design. And I'll never take a Max. Stonecipher is evil.
Airbus got you covered 👍
Boeing is the atypical cheapness of the USA made crap.
Well I wouldn’t necessarily say that. But lately quality assurance has been a bit lacking.
U talk to much just get to it
Will do. Thank you for the suggestion Wills. I appreciate you taking time and watching.
@@StigAviationkeep talking bro. Next people will complain that you don’t explain enough 🤦♂️
Brake fans ??? ………..Brake fans ??? ………Are you f*cking kidding me? 737 doesn’t even have brake temperature gauges !!! How would you ever know when to use brake fans ???????
What are you talking about my friend ? Can you put some context behind your comment?
@@StigAviation
The Airbus has brake temperature gauges in the cockpit. You can see the brake temps. Boeing you have no idea ! No brake temp display in the cockpit.
@@savagecub yes because it’s an option that the carriers don’t buy. There are temp sensors that can be installed as well as tire pressure sensor. Just options. That’s all
@@StigAviation
I have operated-300s, 500s, 700s,800s &900s for two different airlines. Never seen brake temp gauges. I don’t even know where Boeing would put them since there’s no EICAS in the 737. I have however operated A320s for an airline that did not buy brake fans. At least though we the had temp gauges so we could at least see when the brakes were getting hot.
My friend, I completely understand what you’re coming from, but you’re comparing two different manufacturers that have two completely different mindsets and options. Either way break temperature is obviously important but not as important to Boeing on a 737. But take a look at the 787. Completely different perspective right!