Rapid Descent (Depressurisation) in a Boeing 777

This video, shot in a Boeing 777 simulator, demonstrates a slow depressurisation scenario that escalates to the point of a rapid descent. Entertainment value only.
This video was produced for the CRM/NTS training environment so, as such, doesn't necessarily demonstrate or reflect best operating or SOP compliant practices.
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[@RileyGoss]

"Everything looks normal at the door, it's just really out of focus."

[@hendy9380]

It will look normal you obs don't know anything about aviation

[@423moore]

+Hendy What are you talking about Hendy?

[@hendy9380]

+Peter Moore he said everything looks normal and I said it will do

[@423moore]

+Hendy Tone was a little rude. I see you've deleted it now; probably for the best.

[@hendy9380]

+Peter Moore are u like the priminister

[@step2191]

"This is the captain, rapid decent" Everyone goes wild like the scene in Airplane!

[@tennesseevols1087]

yeah

[@Raap123]

Captain there is a prblem with the door. The door what is it? Oh thats the entry and exit of the plane but that doesn’t matter right now.

[@techmantra4521]

Hissing noise? Must be snakes on the plane.

[@lki34442]

i hate snakes

[@Designandrew]

2:49 when those masks pressurize and automatically tighten the straps... that looks straight out of science fiction!

[@harlanjenkins3869]

Actually its a pretty simple process.... all you have to do is press the two red handles on the front of the mask, which sends air through the mask assy harness, which is what opens the harness....once you donn the mask and place it against your mouth and release the handles the harness will tighten against your head at that point. You can adjust it at will in this way, but will take a small amount of oxygen out of your crew cylinder with each breath and each adjustment

[@gaz0463]

I want one for when the dog farts!

[@andrew3084]

@@harlanjenkins3869 I know I'm a bit late but I put one on once when I was at work with my dad and its a super strange feeling when it tightens to your head

[@robyaboy]

@@gaz0463 You're a genius.

[@jamsya493]

@A fairly large but not quite small BEAN you’re ***

[@DrJonez]

That man shouldn't use foul language when talking to ATC, especially during an emergency!

[@Despotic_Waffle]

+DrJonez haha, wow, funny

[@tommeier1888]

+DrJonez ... Idiot.

[@crashwarrior]

+Fritz Le You fell hard for the bait mate.

[@tommeier1888]

Jup, sadly your right

[@DrJonez]

+Fritz Le POWPOW

[@DBR00]

I;m on a flight from LAX to HNL right now over the Pacific watching airplane emergency videos. Free Wi-fi on the plane. I might as well. :)

[@ishant.w41k3r]

are you still over there?🤣🤣🤣(dont take it seriously)

[@bendoherty173]

"Ladies and gentlemen, please put on your oxygen masks." "Ok but it's my right to not wear one."

[@boswelljuggdesh2643]

Says the very loud and aggressive American passengers!

[@xXxSapphir3xXx]

More oxygen for the rest of us 🇺🇸

[@sparrowtail561]

From what I've heard, the lucky ones are the people who didn't put their masks on in time and passed out before the emergency descent. They just woke up after the plane had leveled off at a more oxygen-rich altitude. Everyone else felt like they were going to die and that the plane was in free fall. This is not a comment on the current COVID-19 anti-masker idiots. Just thought it would be interesting.

[@samyacoub4858]

@@sparrowtail561 but when you will pass out for longer time, your brain will be damaged

[@sparrowtail561]

@@samyacoub4858 Very true. I believe that is the purpose of the emergency descent. To prevent hypoxic people from damaging their brains.

[@MDGamingPH]

"Mayday, mayday, mayday you stupid fucking son of a bitch control fucking tower from wherever the fuck we are now, we are conducting a rapid descent..."

[@UnknownUnknown-cu9zr]

Wtf

[@baseballboy9804]

lol

[@lostsynapse]

was thinking the same thing: "mayday mayday mayday, we are fucking fucked fuckers, fuck! We are conducting a rapid descent"

[@baraxor]

If I heard a hissing next to a door, the first thing I'd do is grab something solid before using my free hand to make the call, in case the thing suddenly fails and sucks me right out.

[@ecomotive6158]

There would be well over a ton of force pulling you out... a handhold wouldn't make a difference.

[@ciri151]

Mayday mayday mayday I've got a motherfucking nasty piece of shit problem. Conducting rapid descent....

[@nonnodacciaio704]

Zireael Ichaer omg I laughed so hard at this

[@Galf506]

LOL

[@HunkeyPunk]

FANTASTIC!! Thank you!!! Flying the PMDG 777 and watching this with eyes wide open!!

[@MPSPerformance]

1:43 "Standby F*!K you Triple 7" :P

[@Refulgent_Rascal]

hahaha!! 😂😁😁

[@Refulgent_Rascal]

hahaha!! 😂😁😁

[@Refulgent_Rascal]

hahaha!! 😂😁😁

[@tobybaker1833]

Mark The Gamer iiii

[@CanwegetsubswithnoVideos-gi8pz]

Mark The Gamer I

[@memegenarator632]

How come the pilots have cooler oxygen masks than ours

[@hii-people2245]

Meme Genarator they have to be able to speak to atc

[@velimc52]

They bought the DLC

[@cadefaith4361]

veli mc 😂😂

[@nicolemillner4840]

Cuz without them the plane wouldn’t be able to land

[@rockbellstormcloud7365]

The pilots are more important as they are in control of the plane. They need the best equipment that allows them to stay alive and conscious while flying during emergency situations. It’s also I’d imagine heavy so trying to supply those mask for every passenger would take a lot of weight on the plane.

[@jayzo]

I watched Mentour Pilot explain this process so it's nice to see it in practice.

[@rowanmccay2855]

If cabin altitude was increasing at 4000fpm, that would be rather painful. I'd imagine it'd be hard to focus on descent.

[@thepinkpilot1808]

great video! thank you, helped me for my AGK test!

[@AB-ps2uj]

I bloody love Neighbours but I must have missed this one. Thanks for uploading!

[@WarlockWanna]

Good job guys, you saved everyone.

[@bulgingbattery2050]

Below 10,000 feet is breathable air. In the event of a loss of cabin pressure, the first item on the checklist if to put on your oxygen masks, and then descend to under 10,000 feet.

[@elweewutroone]

Don oxygen masks. Turn on seat belt signs and seat cabin crew (turn on no smoking sign if available). Disconnect autothrottle. Decrease thrust to idle. Begin descent to 10,000 ft / FL100 or minimum safe altitude, whichever is higher. Increase speed to VMO - 10 or MMO - 0.01, whichever is lower, unless structural concerns are present. Extend speedbrakes. Change heading to 45 degrees off-track or parallel the airway. Declare emergency to ATC. When close to target altitude, retract speedbrakes, and lower speed to 250 KIAS or lower if required. Increase thrust (and activate autothrottle).

[@EinkOLED]

Check for terrain below

[@_PLANK_]

@@elweewutroone i know the comment is old, but shouldn't you report before descenting to 10000 ft ? What if there's another airplane at that altitude?

[@elweewutroone]

@@_PLANK_ No because the order is Aviate, Navigate, Communicate. You first fly the plane before communicating to ATC.

[@erictaylor5462]

The very last place on the plane I would want to stand is right next to the door. If it fails suddenly you'll be taking some emergency flight lessons... WITHOUT a plane. Those classes have a very high failure rate.

[@henriqueramos5118]

Awesome videos as usual ... :D

[@Flightbudy2channel]

Why did you bleep out the call sign?

[@WirelessOctopus]

+Flightbudy2channel They used a profane call sign. **#&%(#@ Heavy.

[@shannanrussell5256]

security reasons

[@nz_planespotter4013]

Flightbudy2channel they had an fsx steam edition call sign for example foxtrot uniform Charlie kilo

[@certifiedBrat21]

Privacy reasons

[@rylans.5365]

To hide the company name

[@lakefire9985]

Jimmy have you ever been in a cockpit before ? '' no mister i never been in an airplane before' Jimmy have you ever seen a grown man naked ? ..ah the days when a young boy could bring his dog with him on a plane

[@boswelljuggdesh2643]

One of the greatest comedies of all-time! They can't make movies like that anymore.

[@david-stephenmyles9539]

I didn't know that Scott Morrison used to be a 777 captain!

[@AlonsoRules]

If this was to happen in real life, is it normally that calm in the cockpit?

[@sacpilot]

Yes.

[@flightorg]

Most pilots never find out. That said, we're pretty cool cats most of the time :)

[@ChrisCokeRobinson]

+Flight most pilots never find out as in hypoxia takes over and they die?

[@AlonsoRules]

as was the case with Helios Airways Flight 522 when the pressurisation was inexplicably set to "manual" for maintenance and not reset later on - the pilots probably never knew they were having pressurization problems and required a descent

[@alexrobb]

+Chris Z. Pretty sure they mean that most pilots will never face this situation hence why they'll never find out.

[@luluknowslp]

outstanding commentary section! hilarously funny!

[@SabrinavRstressy]

Fantastis flighto to.learn!!

[@lindsaytadros]

Outstanding CRM

[@inox1ck]

Nice demo

[@Willykamera]

Great job 👍👍

[@jimgardner8932]

This came out on my birthday and I love the b777

[@nenblom]

Well done.

[@palonazo]

I fly a 757, which is the airplane that makes you wanna fly the 777....

[@justforever96]

Hey, what's wrong with a 757? Besides no-one having heard of it? I want to fly a 737, personally. They have character, for some reason.

[@yeh.80]

@@justforever96 That didn't age well...

[@ZeekerAdventures]

@@yeh.80 well only for the 737 max atleast

[@CentralFloridaHipHop]

They seem so calm. I'd be like OMG WERE GONNA DIE!

[@justforever96]

They're in a simulator. If you couldn't even act calm in a simulator, then that's just one reason of many that you're not a pilot. These guys train in simulators so when a real incident happens they can continue to behave calmly and rationally, even when inside their head they are screaming in terror.

[@aycc-nbh7289]

Many, if not most, pilots are former fighter pilots and have undergone training to stay calm even in the most pressuring situations.

[@_PLANK_]

@@aycc-nbh7289 lmao at "former fighter pilots" ... that was rule in the past... not anymore!! A lot of people nowadays allowed to be pilots and doing everything completely wrong I'll tell yah

[@aycc-nbh7289]

@@_PLANK_ You know what? Perhaps I misspoke. There are other pilots in the military who are not fighter pilots.

[@abhinandp9439]

Nice video

[@NineGPull]

It amazes me that it took over 2 minutes for the crew to put on their O2 masks when they knew they had a pressurization problem at altitude, and so robotically waited for a magic "10k-ft" cabin altitude warning to recite memory items. As someone who's also in the simulator every 6 months, the very first thing we do with pressurization issues or smoke/fumes in the cabin is to don the masks. Everything else is secondary. While I'm sure this is a professional crew going through the motions they're taught, I'm still baffled that it took 2 minutes. Didn't the Payne Stewart crash teach us anything?

[@catfishingfornitro3416]

I'm sure this wasn't real training

[@NineGPull]

@@catfishingfornitro3416 why wouldn’t it be?

[@catfishingfornitro3416]

@@NineGPull how slow they were. They probably just set up a camera and said cabin pressure is falling and the pilots did it

[@NineGPull]

@@catfishingfornitro3416 any full motion FFS is not cheap. And none of this struck me as a parody, so I highly doubt it’s anything but training. We are taught and trained to get the mask on at the first sign of any kind of cabin pressure issue or smoke/fumes.

[@ssandeep962]

You’d have to wait for a certain cabin altitude to be exceeded before you put your masks due to limited duration they can use the masks for

[@constantinopolitan]

Amazing video... Where is the automation to detect this in the first place and have warning alarm go off? If the flight attendant hadn't noticed it, then who knows if the cabin would have noticed and reacted fast enough?

[@tonyjlorns1727]

They sound like Hannibal Lector waiting for his next meal

[@MicraHakkinen]

2:26 Is that a bosun's call I hear in the background?

[@kalley09able]

Kindly send to all the Commercial Pilots flying in the world. Capt. S.V. Kalele. Examiner. B-737-NG. Retired but not tired.

[@aoifemolloy1237]

Capt.S.V. KALELE captain enjoy your retirement you have earned your rest

[@kevinsheth90]

Haha this just happened with me at 32000 and cabin altitude was 15000!!!! I opened up the checklist and came back safely to 8000 ft! Great experience in the PMDG! Turns out I had a tail strike, I didn't pay head so got these problems! Just wondering, the outflow valves must be put to manual only while tailstrike?

[@busteraycan]

Is PMDG that well modeled? You had a cabin pressure leak due to a tailstrike? oh wow, this comment was 6 years old huh... Sorry about that

[@kookaburrakookaburra]

Nice.

[@majorgrenouille2986]

That was the slowest "rapid descent" ever

[@ThatGuy-ob2yw]

It’s still very quick. You have to remember that this is an airliner and not a small aircraft that you can just get down quickly

[@contax9377]

looks to be around 4000-6000 fpm which is certainly a rapid descent

Didn't see anyone squawking 7700.... :D

[@cfg003]

I am not sure, but Squawk 7700 is for hijacking only, or am I wrong ?

"75 taken alive, 76 technical glitch, 77 going to heaven". 7700 is a emergency squawk, 7500 for hijack.

[@cfg003]

cool way to remember. Thanks a lot

[@noonenoone55]

75, 76, 77 ---> Hi Jack, Can't Talk Right now, I'm on fire

[@Nummer378]

Might be company policy to NOT set 7700 - I heard a lot of diversions where crew declared an emergency on ATC (usually medical) but did NOT squawked 7700 (flightradar showed a normal squawk throughout the flight). I believe some companies tell their pilots to not set it, unless it's really critical (pressurisation issue IS a serious problem, but quite controllable usually - unless everything explodes).

[@joepatroni8777]

2:26 StarTrek Boatswain Alert Tone in background (Cells phones off pls!)

[@123fockewolf]

That "cabin altitude memory items" call is unrealistic we dont say that or wait for someone to say that if we hear the cabin alt warning horn Im throwing of the headset and fighting to get that don mask on we talk about a few seconds conciousness!

[@AlaskaMike72]

With the packs on, couldn't they have given a little throttle while the brakes were out to help mitigate pressure loss? Notice that when they idled the engines at the start of the decent the cabin altitude rate jumped from +500 to about +3000. Just curious--I'm certainly no pilot.

[@junali94]

also, what was the name of the song at the beginning of the video?

[@BeCoShooter]

Has a bit of 2001, Dave what do you think you're doing? feel to it.

[@NapATC]

obviously, their callsign is inappropriate

[@noahstringer9178]

I was on UA flight 520 may 27 . 2018 Our plane was deco pressurizing and within 6 minutes we had to descend from 249000 feet down to 9900 feet and stay at that elevation rest of the flight. Oxygen masks deployed and we had to use them. The pressure was so bad on us you couldn’t hear the person sitting next to you talk, couldn’t even hear your own self talk. Felt like throat was closing. Scariest thing I have personally been through. Never again will I ever fly!!!

[@EllyLugosi]

Omg thank God you're alive 🙏

[@ermis3617]

Did you feel the descend in ur stomach? Like a rollercoaster?

[@GarryWan666]

According to the B777 QRH 2.1,pilots must set the outflow valve to MAN in the first hand. But they did not do that and I cloudnt see any QRH or emergency check list

[@ThresholdProductionsCanada]

Is this a Flight Deck Solutions FDS-B777-FBPT simulator?

[@thebiffer100]

Well guys, I've retired from airline flying and done hundreds of rapid descents in the sim (and one for real) and I can tell you right off the bat in ANY pressurization circumstance before descent is initiated BOTH pilots must dawn their oxygen masks...or am I wrong?

[@ministeresther]

Its Very good of The pilots How they Remaind Calm

[@911S]

Where is Leslie Nielson when you need him.

[@tyellowquill]

2:26 Startrek comms noise or something -_-

[@laurenlewis173]

I thought I heard the com noise too!

[@slovakiak1]

1:27 they sure do a lot of swearing at the atc

[@Niko-xz5lk]

Here's two questions for someone who knows more than me, but wouldn't this scenario be a Pan Pan Pan at this stage rather than a Mayday? Also, in the event of a depressurisation, isn't it standard procedure these days put oxygen masks on immediately? If I remember rightly, at climbing altitudes of over just 10,000 feet, the pilots can have as little as 15 seconds before hypoxia begins to affect your judgement and concentration, from which point a person will begin to lose vital decision making capabilities.

[@DrBuzz0]

Given there is a question about the pressurization, I would think the flight deck crew should put on their oxygen masks. No?

[@LukasLiwandouw]

Are people using real Callsigns in Simulator so that you need to sensor it?

[@ByT1mothy]

Its quite nice proffesional work of the Pilots, why the callsign peeps out?

[@chaoszombie9995]

Pilots and Flight attendants cant legally share what airline they work for if i recall correctly.. but i could be very wrong of course

[@Tranefine]

2:26 are you sure this is a Boeing 777 and not a Constitution- or Galaxy-Class starship?

[@ashsweet]

when it started beeping i thought he was just swearing into the headset... i mean its a pretty reasonable reaction to depressurisation but i imagine its frown upon by the air industry

[@DaveInBridport]

I'm an airline pilot. This happened on a flight I was captaining. The No 2 became hysterical and one of the stewards had to sit on him as he was screaming and pushing all the buttons. We crashed and only me and Miss Tomkins, a huge-breasted trolley dolly survived.

[@azschalter]

Luuuuuke! I am your father!

[@ericparent7794]

+azschalter LOL! That's exactly what I said!

[@gavinkatz1211]

In *my* opinion, with the possibility of an imminent pressurization issue (a hissing door alone would not prompt this thinking but, in conjunction with a climbing cabin altitude, it would), I'd call for "masks on" almost immediately. If there is an explosive or rapid decompression, you're already covered, and although at 40ish thousand feet, useful consciousness is about 15 seconds, the step of placing your mask on is already complete. A cabin pressure problem would also prompt an emergency descent (as demonstrated in the video) which, in it's self poses a distraction during a high stress situation; this would add one more step in the "masks on" initiative. If the decompression stabilizes, and the emergency descent is in process or complete, no harm done; if the decompression becomes explosive, you're covered already. In conclusion, I would call for "masks on" MUCH earlier, then call for the QRH, QRC, or DRILL items. Having experienced the symptoms in a decompression chamber during my accident investigation training, it became very obvious that the SLOW decompression is exponentially more dangerous than an explosive one simply because it's harder to notice. If the symptoms of hypoxia start, the master warning/caution lights/sounds will be less evident, thus I ask - why wait?

[@markomdeutschi628]

Probably a standard procedure. You only have about 15 minutes of oxygen and the checklist or the memory items do not recommend oxygen masks until the cabin altitude is over 10000 feet. Pilots are trained for situations like that. There are systems to monitor the pressurization and pilots know them. So even if the decompression is rapidly or unnoticed the pilots will get an alert in the cockpit if the pressurization is low. The first step when there is an low pressurization alert is to put on the masks. So I don't see a point why they need to immediately put on the masks. You only need them if the pressure in the cabin is low. Also the monitoring system is reliable. There was never a fatal accident because of the monitoring system.

[@DouglasVishalBrook]

I wonder if Cabin Crew Can call the flight deck on the inter phone if the flight crew have oxygen masks on? The Pilots can't speak into the phone or easily hear through it.Or does inter phone have an emergency feature where it goes through the cockpit speakers?

[@YouTube.TOM.A]

YES, cabin interphone communication can be routed to the mask microphone and crews normally use the cockpit speaker or put their ear pieces back in their ears. During this procedure there normally is no back and forth, between cabin and cockpit.

[@Diego-my9gc]

that intro music from the 90s

[@jibeneyto91]

At 2:38 when the "CABIN ALTITUDE" warning appears on the EICAS; why are the engines spooled up at 78% N1?

[@YouTube.TOM.A]

+jibeneyto The Engine Fan [ propeller ] is driven by the relative wind entering the engine cowl during a rapid decent. You have cut engine power back to idle but the speed of the aircraft is pushing a lot of air through the engine nacelle

[@kembooo000]

you need to watch a video to realize how much time you have during a rapid descent. I would have sworn relating to the drills I made it takes only seconds...

[@legitscoper3259]

Rapid descent in FSX Sinkrate - 3500 ;)

[@colonelradec5956]

o so the flight attendent has to notice what the computer should have alarmed them about 😂 brilliant design.

[@fahan32]

do pilots always swear as much as they did in the start of the video?

[@ThePixelPodcast]

It's stress removal. Part of the training

[@CaptainArt777]

+Fahan NO.

[@JustArchiee]

It's not swearing. They're blanking the aircraft callsign.

[@Ivansky1]

Archie Dennis For Real!???

[@justforever96]

How do you know the original poster was joking? Never trust the obliviousness of people on the net.

[@astudentpilotlife]

Nice Video, but I want to point out about the censorship in this video. My theory is, they cut it out because if someone have access to the flight hand held radio device. They can copy the right call sign and talk over the radio causing the tower to think that there is a aircraft in distress. Causing chao on the ground and in the air. Please correct me if I am wrong. I want to know the real reason too. Thank You.

[@jamsya493]

Well, thisis a simulator.. maybe they use real callsigns

[@astudentpilotlife]

@@jamsya493 honestly, that comment was 3 year ago before I was in flight training. But now, I know that everyone have access to live ATC and radar and can tune in via the hand held device. It has happen once at my airport where someone accident tune in the tower and talk.

[@ThroneOfBhaal]

Don't worry about it mate, she'll be right.

[@chrissteer001]

There must be a protection against overspeed with the Autopilot engaged even when the selected IAS speed is over VMO. The CA set the speed on the FCP to 340 which was above the MMO for the altitude. I'm guessing the A/T system will do MMO until intercepting 340 and then hold it? Does anyone know what is going on there?

[@ideas5466]

the plane well automatically balance the speed u tuned in and the descend rate

[@KLM--vm3mp]

the autobrake switch is missing

[@mebeingU2]

That decent would be a little more difficult over the Rockies.

[@flyinglemon2930]

they sound like darth vader with the oxygen masks on

[@xenonozhid3383]

Aussie flight deck, is this a VS 777 sim?

[@liamfleming62]

Is it just me that spotted that there isn't a knob on the autobreaks ?

[@urmo345]

do they know what happens or element of surprise is included?

[@atpg5]

+urmo345 Probably not. They do know what items must be covered during a "Recurrent" training cycle however.

[@johnyp304]

no-one else hear the away team calling at 2:26?

[@fritzfalkson2035]

Kirk here

[@akshayverma6052]

Didn't deviate from the airway during rapid descent? Aren't you supposed to?

[@stephenstough850]

No. Although they can do anything required to meet the emergency, you want to deviate as little as possible from the assigned route so that center knows what to expect. It's bad enough leaving the cruise altitude without warning. You don't want to leave the assigned route at the same time if you can avoid it.

[@rylans.5365]

You get lots of leeway during an emergency. ATC will likely direct traffic away from the emergency plane so they are free to do what they need.

[@infinial]

"Do not be alarmed" dude the only thing that im garanteed to be is alarmed

[@TCGProductions03]

Real aircraft or simulator

[@junali94]

why are they bleeping out the call sign if its a simulation? was it a real call sign they used?

[@liergutt]

How long do you have oxygen in those mask? i read somewhere that saying you got 10-12 minutes of air..

[@aviador1982]

An hour? Where did you get that from? We get like 15 minutes of O2 in the cockpit, not sure where you got that "1 hour" from.

[@bobalobalie]

aviador1982 I know right! I was thinking the same thing.

[@letsgetsimming2976]

stephanos jacobsen I'm a pilot, i fly the A320 and the cockpit only provides 15 minutes of oxygen so where did you get 1 hour from?

[@liergutt]

youtube....... :-)

[@glen4cindy]

aviador1982 Probably got "1 hour" of OXY from "Oceanic Airlines"...... :)

[@aweird1]

So, is the string of expletives so horrible that it has to be bleeped out of the video standard operating procedure after calling mayday, or was that an artistic choice?

[@PointyTailofSatan]

This is why all aircraft should carry a roll of duct tape! lol

[@procksomaterman]

I like how they look dead in the thumbnail

[@noxious_nights]

1:21 What exactly is that switch labeled STORM? I'm not a pilot or anything, I'm just interested in what that is. Does it enable certain lights to increase visibility, or?

[@noah9130]

That switch will simply illuminate all the lights in the cockpit at maximum. You got the answer 2 months later but hey it's better than nothing.

[@noxious_nights]

@@noah9130 Oh, thank you

[@kekelaward]

No, there's lots of screaming, yelling and crying for mom. Then they get in crash positions like in that documentary "Airplane".

[@MrFrenchPlayerHD]

At 2:40, the cabin oxygen for the passenger would have dropped down simultaneously and automaticaly with the alarm right ?

[@jamsya493]

No i think the pilots drop em

[@SamathPerera]

where has the autobrake knob gone ? :D

[@kinsley2108]

At 2:51 was freaky how the bands for the mask just tightened on it's own like some sort of bionic device!

[@Smitty_77]

Its air that decompresses to fit to the pilots head. I went to visit a school and they had a hypoxia room for pilots and they had those masks and the masks are worth $17,000.

[@videogiocatore3]

Those are called Quick Don Oxygen masks. Quite cool to put on, and breathing pure oxygen is also really nice, lol

[@danpootato896]

videogiocatore3 for long periods of time, breathing 100% oxygen can cause oxygen intoxication which can be fatal

[@LegendaryMania]

Daniel Yong but this oxygen only lasts for 15min.before pilots descend to a proper altitude.

[@wiedehopf9068]

depends on the altitude. if the ambient pressure is low enough (one fifth of normal atmospheric pressure) 100% oxygen is not a problem. actually then anything but 100%oxygen is a problem.

[@pluto762]

Well, it might help with the hissing if you'd actually close the door properly! :))

[@spencerbrown3875]

So once they reach the safe altitude do they divert to the nearest airport or continue to their destination?

[@YouTube.TOM.A]

Nearest airport that can accommodate that type of aircraft and maybe even providing maintenance service. The most critical situation is overwater where you may have to spend several hours at a lower altitude.

[@YouTube.TOM.A]

+Spencer Brown flying a Boeing 777 at 10,000 feet over a long distance uses quite a bit more fuel than at normal cruise altitude. if you are overland you are exposing the aircraft to a lot of VFR [ visual flight rules ] operating smaller [ and Slower ] aircraft and that is not as safe as finding a suitable airport to land, and get services.

[@nicolemillner4840]

Tom A nearest airport: At lower altitudes the air is thicker therefore more drag which means higher fuel burn so even if you tried you wouldn’t be able to reach your destination

[@aperson4075]

Auto captions so funny 😂