It truly is. It’s the pinnacle of aviation safety. Space travel is close but experimental and always subjective. But aircraft technology and safety is the standard for all.
Finally a video on this! Now I am confident to do this brake job on my Boeing 777 in the driveway. Next video should be adding subwoofers to the whole entire cabin.
Thank you for an EXCELLENT and very interesting video!!! As a licensed automotive technician for over thirty years, who has very recently taken a keen interest in aviation, this is extremely interesting to watch. I compare this to changing a set of brakes on cars and trucks to which I've changed probably too many by now. It's interesting to see the wheel assembly installed in a similar manner to the way wheels and hub assemblies are installed on teucks equipped with full floating axles. Torque to a higher value intially and then loosen off and retighten to a lower torque value. Also interesting to see the Michelin name on those tires. I bet those cost a pretty penny!!!
Indeed they do.. much like everything else In aviation. Lots of similarities between automotive and aviation design. Just a lot more redundant features.
Thank you sir. It’s an honor to have you here. By the way we have meet a few times. I’ve performed many ETOPS checks on your birds out of LAX. Cheers 🤙
Good, informative video. Assume you are involved as you don't show the actual removal and refitting of parts, bolts, or torque loading. Brake dust and grease gets everywhere so not good for cameras. 😂
@@StigAviation I always approached rims from front or back, never from the side, especially if they are hot like Stig said in another video, those are split rims and they can blow up and kill you
interesting video! im almost done with school but have zero mechanic experience, im hoping to get into AA. Would you say going to the majors right away with no mechanic experience at all will be difficult?
@@ttam17 i would say it’s definitely the right way to go. Go for the majors first. Everything will be taught to you. There’s more training involved when you get hired
@@StigAviation thanks for the reply stig! I watch all your videos, these types of videos you post are my favorite where you deep dive into some of the work you do.
If I remember correctly, the 320 main landing gear initial torque is 300 foot pounds and final torque is 150 foot pounds. And for the 777 the initial torque is 500 foot pounds and final torque is around 200 foot pounds. But I’m going from memory, we usually never do that. I’ll always follow the manuel which is on hand while I work.
How do you know when the brakes need replacing? Is it based on the number of flight Cycles or is there a cockpit warning? Thanks for the fascinating video!
@@StigAviation I just thought of something funny Imagine if air forces had pit crews in active war zones so when a fighter jet with an issue lands they run over to it and change all the tyres in under 3 seconds and the jet screams down the runway and takes back off🤣
The brake overhaul workshop has the equipment to clean the brakes. Mind you once you have removed the old one the dirt is transfered to the new one so it doesn't stand out.😂😊
Oh My- 500 foot torque on main nut. Respect what you guys do to keep aircraft safe in skies. Concerning yesterday's incident at #SFO where an entire wheel and tire fell off, did #United Maintenance folks miss that including inspector,? Or do you think it was metal fatigue or some other failure inside wheel assembly? Very rare incident it seems.The 777 is my favorite airplane and been all around world on them.
I do not believe this was a maintenance issue, the United Airlines mechanics are incredibly proficient and some of the best in the world. I believe this was a wheel manufacturing defect.
super wonderful 777 wheel brakes hydraulic mechanical pressure & rotating axil & wheel bearing # but i want to understand exactly how hydraulic pressure pushes the shoes or pads against rotating wheel ???? ❤️🇵🇰
the wheel assembly has slots that slides on the brake assembly, as the wheel turns so does the brake disks. when brakes are applied via hydraulics the pistons will squeeze the disks and hence braking/slowing down the wheel
The stators can slide on the inner section of the brake assy so when all those pistons extend it squeezes them together. They are fitted alternately stator, rotor, stator etc. If you look at the video the bits sticking out are rotors which key to the wheel.
Brake changes are always fun, make sure to not pinch your fingers re-installing the tire. Especially love doing brake changes on 787, the Electric brakes make it even easier!
787 is such a modular bird, and very easy to maintain in regards to that. But the downside is that everything is software driven. So you changed the brake you better make sure the software is up-to-date.
@@StigAviation Very true, it’s amazing to me how software dependent the LRU’s on 787 are. I have found pushing software through the ODLF to be very useful as well.
No need for that. It’s a closed system and the aircraft has quick disconnects for that. We can take off the pressure lines without compromising air getting into the system
hey stig, after seeing the hub cap hides the safety device bolt to retain the main nut maintenance cannot see if the safety device is still intact. just a day ago a united 777 lost a main wheel assembly.
That's awesome. I didn't catch the thermal fuse plugs since I don't know what I'm looking at. I was looking because of the recent incident with Delta #1437 and the emergency evacuation.
Ok so right next to the tie bolts there is a smaller bolt like plug, its very dirty in there so a bit hard to see, but if you pause the video youll see it .
Thank you for making these! Never knew that's what the brakes looked like on airliners, for some reason I was picturing a disk brake like a car. Good day 😊
The rotors are keyed to the wheel by those "ribs" shown on the inside of the wheel. They can be a pain to line up when fitting the wheel back on the axle.
I am learning just now and also getting pictures of what actually happened. And from the pictures, I did see the main nut was still on the axle. This seems to be more of a wheel assembly failure.
@@StigAviation Really the nut was on ? I did think “there is no way someone can not install the nut.” So the rim went over the nut, the rim must of cracked badly to slide over the nut.
I do apologize for that, at the moment i film everything with my phone on the spot, so its a bit hard for me to constantly transition... i also post in IG and Tiktok and cater more to the mobile user. But ill get better camera equipment in the future to do landscape videos ... thank you for watching, i appreciate you being here
@@StigAviation I was going to ask about that stick if you did bleed the brakes because you didn’t show it you actually make it look easy but manhandling that tire and wheel over the brakes is an SOB. The rest of it is pretty easy except for the brake dust everywhere, which makes it dirty as crap, I’m retired and as much as I used to bitch doing it now I miss doing it take care of brother from an old retired guy
