@@blancolirio Welcome to Seoul Big J! Been watching you on flight aware all day from Illinois! That was cool. Long ole grind huh. Hard to believe those big ole motors grind that long non stop. She's probably gonna get reloaded, fueled, and head right back. Stay safe over there.🙏to ya!
I was on this flight, it was traveling normally when they started a descent. I thought this is a little early for a descent and it was a higher rate than for a altitude change for turbulence avoidance. I looked at the flight tracker and saw we were too far out for this to be a normal descent for landing. The only "turbulence" was a vibration because of the maximum rate descent. After about three minutes of the descent the masks dropped down, this caused a little bit of panic in some people. There was an automated recording telling people to put on the masks that was being talked on top of by the cabin crew. The cabin crew immediately started making sure people had their masks on and the captain came on to announce that the sensor had indicated the cabin pressure loss and they started the descent to try and get below 14,000' before the masks would automatically drop and that they just didn't make it in time but the airplane was perfectly fine. After the plane reached the safe altitude the masks were discontinued of use, and the pilot said they were checking with ops to see if they continued to FLL or diverted to Tampa. A few minutes later he came back on to say they are diverting to Tampa and we landed normally albeit with a round of applause. The biggest thing I want people to know was that the cabin crew did a amazing job of trying to keep people safe and calm, the flight crew did exactly what they were supposed to do, there was no plummeting ,turbulence, chaos, or sudden depressurization, in fact if it had not been for the masks dropping down I would doubt if most passengers would have noticed anything out of the norm!
Five stars for calling the outside inlet to the packs a NACA duct. As a young engineer for the Boeing Company (many years ago), I once inadvertently deployed the the oxygen masks during a planned flight test (they were supposed to have been secured) when I deliberately raised the cabin altitude. I heard about that one for about a week. "Do you know what it costs to repack those things...". Aviation has always enjoyed a fragile public trust that's being strenuously tested now over safety of flight issues on many fronts, including regulatory matters. It's not the job of the press (or anyone else) to brush off abnormal events as merely normative, controllable activities.
Mr. Brown, your technical expertise and even human anatomy ( small eustation tubes) is impressive ! I became a fan when you reported on the problems with the new Boeiings 737 Max.. your expertise and experience is invaluable. I'm also an Air Force Vet ( TAC 69-73) 27350 SCOPE dope. Thanks for your service Brother and Thank you for this information ! You explain complex systems in a way layman can understand. Outstanding !
Thank you Juan... another excellent report! As a retired Sailor and enlisted Naval aircrewman, I had the pleasure of taking a ride or two in the pressure chamber there on Naval Air Station Pensacola back in May 1986 when I was going through Naval Aircrew Candidate School. P-3C crewman! Fun times!!!
As always accurate and informative. Always thought it was cool how something burning (exothermic reactio) creates enough oxygen the breathe. My dad use to sell a cool welder, toss a oxygen tablet in a can, light it, close the can and you now have pressurized oxygen source for welding and cutting. Lite an oxygen tablet from the welder sitting in a plate in back yard, made an extremely bright blinding white light as it viciously burned away uncontained.
And THIS is why I'm subscribed to the blancolirio channel. It's the only place in the world where I would have learned what really happened with this "Terrifying uncontrolled plunge." Thank you Juan!
Thx Juan, was on Turkish airlines flight, we had a pressurization issue on the B737, crew picked it up , aircraft was not pressurizing, let the pax know, did not go above 13000, watched on the inflight system, descended n returned to the airfield, the cabin atmosphere to the uninitiated flying public was of fear. I was relaxed in knowing the crew caught it, and did their job professionally. Cheers for yr great reporting n vastly detailed insite.
Good job, Juan. Very well done. I had pretty much forgotten the Air Force decompression demo. Afraid mine, back in the '60s, was a little more primitive than yours. You bring back some neat memories for me. Thanks!
I flew with a step daughter who had never flown before, but who had just suffered two ruptured eardrums. She was 8. There was nothing anyone could do. I told her that it was going to hurt, but she would be OK. She was a trooper and made it through without any more screaming or crying after we talked.
Juan, adopting the "weightless" by Aram Bedrosian as your permanent music intro is perfect. Gets me every time and let's me know I'm going to be educated, entertained, and enlightened!
So informative, as always. Thank you Juan for lending your voice to science and facts. You're doing a public service. In an ideal world you would have 100M subscribers.
Thank you, sir. I was chastized by a few over coffee for saying "System worked perfect, normal, good stuff, good crew." Some said "Oh hell no, it was real emergency, ALL the news reported that!" People (sheeple) are like lemmings going over the cliff. We're in trouble, thanks to media. We appreciate you, Juan. You're on a genuine mission, and just more than you may know. Don't stop. All the best.
Your reporting is so distant from the mainstream media it's most believable. Your calm manner has served you well. Idea for future background music. "Come fly with me " My wife and I pray for your complete and total recovery every morning. You will be back in the air before you know it.
I watched Goldfinger and when the window was blown open the pilots worked hard at stopping the out of control plunge of the jet. Since then I thought that decompression caused the plunge. I suspect that many of us without flight knowledge has had the same conclusion. Thanks to your video I now know that it is amazing flying that saves lives by diving to an altitude where the we can get the air we need to support life. Thank you.
As an RN (ret.), I want to thank you, Juan, for reminding passengers to listen to the safety briefing at the beginning of each flight. Granted, if you fly a lot, you may have the info downpat. But it’s always good to listen to it at least every other flight. You might have mentioned that passengers should always apply their oxygen to themselves first before assisting other passengers, even their own children. Your children need you to take charge coherently! Confusion is also an early sign of hypoxia. (Cyanosis - blueing of lips and nailbeds - is almost always a later sign.) And, know where the emergency exits are relative to your seat. That I might be responsible for the lives of everyone behind me is a sobering thought. So if I’m behind you, I don’t want you impeding my egress in an emergency because you were too cool or too smart to listen. Thanks again, Juan! You’re the go-to guy for Aviation news and explanations thereof. Your little Lieutenant there is adorable!
As an emergency services person, also if you're in an exit row, have a plan, and perhaps discuss it with the other exit row people such as I'll get the door and you help people down the wing. Boy that gets some strange looks. Plan may fall apart right off the hop but you started with a plan. One flight when asked about handling the exit row responsibility, I replied with yes absolutely. Little old lady behind me said 'if it goes wrong, follow that guy' I assured her I'd do my best to make sure she gets out okay.
Thanks, Juan, I've been thousands of flights over 70 years and heard the announcements but had no idea of all of the planning, equipment, and procedures to bring the aircraft and the passengers down to a safe altitude. Thanks so much. You are doing a wonderful service to the traveling public and to FAA who is a mysterious agency to many people. Dean from Minnesota
Thank you, Juan. Your videos should be required viewing for all passengers. I feel more comfortable flying with the knowledge you’ve shared through your many videos.
No fake news here! Juan, I very much appreciate you taking the time to educate "us" in terms that even an aviator-wannabe like me can easily understand. I have learned a lot from your content. Take good care.
Juan, you have a great channel. Very informative and more trustworthy than mainstream news channels. I'm not sure about now, but back in the early 80s while working on my instrument and commercial, me and a group of students went through the pressure chamber at the FAA facility in OKC, and as you said, it was comical watching the other guys , until it was my turn. The instructor put the mask back on me when he said my eyes rolled white, something I didn't feel. And when I saw what I was writing, it was nothing anyone could read. The altitude was just under 23,000 feet, and I was in my early twenties and very healthy. Imagine today! This type of training should be available, ours was free, to more civilian pilots, as with me, it tells you what the limits are. Great work on your channel. Best of luck with your medical.
The surprise ending is a show stealer. And it's a high level 'descent' presentation. Very useful to learn the detail about the smell when oxygen mask system is deployed. Thank you Juan.
I got the flightradar 24 alert for this and had no idea until a day after what had actually went on. I was monitoring ATC and flight path and the pilots made it seem like it was just a regular old landing. Very impressive
With that o2 cooker, you could actually have popcorn or a hot meal on a peanuts-only flight . I’ll bring a meatball sandwich whenever I fly. That’s some great info for me as a traveler. I appreciate the detail and never would have thought it wasn’t from an o2 tank, so it’s good to know about the heat and smoke. That probably freaks some people out, especially in that Delta inverted spin stall from 55000 to 170 feet in 6 seconds.
Capt. Tammy Schultz never declared an emergency during the SW 737 engine failure, just started her descent without approval from ATC, it floors me that nobody has pointed that out to the general public. Thank you Juan, for telling the world what is required and expected during an emergency descent in a jet airliner..:-)
Grab your mask, then Aviate, Navigate, Communicate. If you have spare neuron, squawk "emergency". Most airliners have a single switch or button that will set that transponder code. ATC controllers aren't dumb. Even without a mayday call they will react to the squawk and the descending altitude readout. When you have everything stabilized in the descent, then it's time to talk outside the cockpit.
On a Delta flight years ago, I listened closely to the safety brief. Pretty sure the correct word was supposed to be 'streaming' in regard to the tubing attached to the cup, but the actual words I heard were, "...when you finish screaming, help the other passengers..." FA earned my total respect.
The Media loves to toss Scare Headlines around, regardless if it is justified. Click Bait, yeah, a classic example for sure. They figure who is going to read an article that is titled "Well trained pilots take care of the problem in a timely manner with no issues!"
Their primary purpose is to sell ad space, make no mistake. Sure that can definitely be true here in YT land but TV has it down to an exact science. Fear, Fear, Fear, Fear and now a word from our sponsor.
As Mark Twain said, "never let the truth get in the way of a good story". Publishing gossip magazines is a billion-dollar business. The truth in those couldn't be spread any thinner.
I've been on a Fijian airlines 747 when we had an aircon/pressurisation failure. It sounded like being on a motorbike at 300kmh, as well as getting the hypoxia effects as described in the video (not all bad). I do remember the captain saying, I'm sorry, but we can't keep going on like this and were going to go down rather quickly. 😢😢. An emergency decent and 30min dumping fuel later, we were safely back on the ground. These guys are well trained for these eventualities....
I saw something about that incident on the internet and shook my head at the misleading headlines. Your reporting confirms what I was very sure actually happened, that the pilots made a controlled descent to 'habitable' altitude. Fortunately, many of the commenters online understood the misleading nature of the media report. Thank you for a good follow up report!
I have been on many altitude chamber rides. Very interesting to see my symptoms. I was always amazed at how fast colors came back ... with one puff of oxygen. As a private pilot I wished we had this training as in our aircraft we fly on the edge of safe oxygen levels many times. I have recently heard that general public can attend chamber school on OKC put on by FAA. Not sure if pilot license is required. I would strongly encourage all pilots to take this training.
So much invaluable and useful information crammed into one video. Learned so much about oxygen supply to pilots and passengers. Thanks for these videos.
It was a by the book "controlled emergency descent." Thanks for the USAF training info and the difference between a slow and rapid altitude change. I suspect the Paine Stewart aircraft crash was the result of a rapid altitude leak resulting in immediate incapacitation.
A few weeks ago I was on a United flight that was delayed because the microphone in the co-pilots oxygen mask wasn’t working. While I was annoyed about the delay, it was reassuring to know that they check this before departure! Fortunately they were able to get a replacement mask within 30 minutes and off we went.
the Navy used to call those OBA canisters. (oxygen breathing apparatus) It was the main source of air for firefighting before the service switched to compressed air tanks. OBAs were in use before/during WWII thru the middle 1990s There were also individual Emergency Escape Breathing Devices (EEBDs everything has an acronym ) mounted in a ready access box inside your coffin rack to escape a smoke filled berthing compartment. Trivia. Yes they do get super hot. I am glad that I dont have to change them out since the combustion temperature for loose leaf paper is 450 and they beat that by 150
That brings back some memories! If I remember correctly, there was an hour timer on them that you wound up to the hour then brought it back to the 30 min mark. Then a bell would ring at 30 min to get you out of the space. On the subs, we had the EAB's that provided O2 off of the oxygen banks. You had to know where the manifolds were to get fresh air. And that is why we drilled so much!
i was sitting here after studying some of my ground school manual and was wondering what to do the rest the evening i saw the red dot on utube and clicked it and there you were i would rather listen and watch your presentations than study great job it was fantastic and you made it so clear thanks for sharing great job STUDENT PILOT ED
I love it - someone who does not follow on this panic kind of reports but EXPLAINS what has happened. Could we please all come back to this level - or at least into this direction? Thanks for your continuous sober and precise explanations!
I was an aircrewman in the USCG, and went through altitude chamber training at least once {maybe twice, been awhile}. It was useful to help you recognize the effects of hypoxia.
Sounded like a well executed Emergency Descent!! You have a gift Juan of explaining some technical procedures so the common man can understand. Thank You and keep up the great work. Hope you are feeling better. Lt. Pete had it Perfect...Aviate, Navigate, Communicate. Well Done!!
crazy thing: during the reno races i was skimming through juans back catalog when i realized he had made a video i watched a couple years before i knew about him about the zipper amusement park ride. been watching since the first oroville video. thanks for the good work man. glad it's panning out. love your content. also gotta say: i really hope mike patey keeps making videos. that's a really crappy thing he's dealing with.
Very interesting vid. As somebody with over a million miles clocked up on Thai Airways, I had always wondered what would happen (smoke and smell wise) if the masks dropped.Thai usually gives me 3 seats to myself so I guess I could use the three masks sequentially! BTW, I have a CPL Rotary and type rating R22. In case of engine failure, you got 1.5 seconds to set up for auto rotate or else say your prayers.....10 to 15 seconds is long enough to hit the turf.
Well done dissertation on the RD issue. I am glad that you did not mention the other physiological effect that goes on in that altitude chamber concerning bodily gas expansion. :-) Going back to a previous VLOG concerning AOA indicators you showed pic. of a big one on the dash of the T-38. To the best of my recollection when we flew the "white rocket" with small wings (class 70-2) it did not have that feature installed yet. It was needle ball and airspeed. :-) The NYT article by William Langewiesche concerning the 737 issue was about as thorough and accurate as one will find in the MSM. Lost of blame to go around, definitely on Boeing's part but also the training and experience (I should say lack of) on the part of many newer generation pilots especially foreign but also domestic when it comes to the issue of airman-ship. Best wishes on your return to active flying!
Juan, Great and informative video on this incident and situation. Great explanation of the 'hows and whys' of emergency descents. Thank you! God bless Paul
Capt. U have stated that Bleed/Ram air used for cabin pressurisation !! just to clarify the ram air is used only to cool the bleed air through the heat exchangers.. it does not enter the cabin ...
I like the way you explained the “simple” procedure for an emergency decent. But you also inadvertently explained why the Helios crew failed to respond to their gradual loss of oxygen.
On the lower pilot window frame on the 757's is a decal " WINDOW NOT CLOSED ". I would like to hear the story that prompted the warning. I have run engines with it opened and it is not that quite. Good show.
If every smoker was required to clean the outflow valves from a plane that had been smoked in, I bet it would cure half of them of the habit. Phweww! Aversion Therapy 101.
I've flown a lot, never experienced an emergency descent. The most surprising event to ever happen to me was a mountain updraft launched the port wing nearly vertical from a horizontal flight for a bout 2-3 seconds.
11:00, Enroute IFR charts have track MSA, or minumum sector altitude, which offers a 1000' clearance from terrain along that track for a set space either side.
Great follow-up on the media “headline” report. I really enjoy your “pilots perspective” reports on passenger flying. Happy to report I keep my feet on the deck! Thanks for the update - will be interesting to hear what the emergency was.
It's DAMN reporter. And it's HYPOXIA. Double DUH. Lemme guess: you're in your teens or 20's, and high-school was a bitch. So was English Comp 101. Double DIPSHIT.
@@DefaultName-yq3zj Cool it. marcuswhonea was merely punning on Juan's reports about the Oroville dam and the fact that one can get high if suffering hypoxia.
Well done as always Jaun! I think your videos provide a great service to the public, not to mention your fellow pilots. P.S. Spot on Pete! 👍 Lol Great job following in those footsteps.
I was in the back of a Continental 727-200 for a real pressurization failure - first you notice your ears, then the fizz explodes from your soda - I was a 12 year old and a pilot's kid, I had literally read the book (operations manual) on the 727 - I said to the lady next to me, "Next the masks will come down". She said "Lord, I hope not", I said "We're going to need them" They did. This being back in the day when smoking on airplanes was still a thing the flight attendant PA was emphatic about extinguishing cigarettes and putting the masks on. The nose goes down to a surprising degree - even to a pilot's kid - and with the spoilers up and speed at maximum mach the 727 is noisy and shaking, and you are tending to fall forward from your seat. It was after we were level at 10,000 feet (6-7 minutes later) that we heard from the cockpit. Afterward, on the ground, it became clear that I had been the only person aft of the cockpit door (including the flight attendants) that knew we were going to level off. They had been trained about what to do when the masks came out, but not what would happen next. At Continental the pilots and the cabin crew received revised training as a result of that incident - the pilots to include "to the passengers" in the "Communicate" phase - once the descent was stabilized, and the cabin crew to know that the plane will descend rapidly to, and then level off at a habitable altitude. For me it was novel, but for my Mom (who was several rows away - (full flight and we were non-revenue passengers) and everyone else it was obvious that something had gone wrong (rubber jungle) and the plane was doing alarming things (pointing in the direction of the ground, roaring and shaking) and the flight attendants looked and sounded frightened...about as much fear as you can generate and not hurt anyone. No one screamed (having a mask on helps - my mom said she was too busy praying to scream). Everyone clapped when we touched down. I don't know what was said to the passengers at what point in this event, but the overall experience wouldn't have been much different - as far as those passengers are concerned, at least for a few minutes they had every reason to believe that it was an out of control plunge. Many of them had probably texted final thoughts to their loved ones - so I think the media can be forgiven for being a little breathless telling their stories.
There are perks to being a nerd. I can remember one flight with horrible turbulence that had the passengers around me nervous, with a few further forward starting to visibly panic, all the while young (like ~10-12-year-old) me was smiling like a lunatic just enjoying the ride. Granted this wasn't nearly as dramatic as your situation, but it was surreal thinking I had a better understanding of what was happening than the hundred-some adults around me.
I have to disagree about the "media" being a little breathless, THEIR JOB is to report FACTS, and FACTS they do NOT get from interviewing a passenger, the same passenger who probably had trouble finding his, or her seat when boarding, but of course with a little coaching, for some added dramatic effect, the 'reporter' is NOT going to put FACT above sensationalizing the 'story'.
Rich Sarchet I was on a short flight on Braniff a long time ago and the coffee was so good I ordered a second cup. The second cup was instant coffee. Everyone around me acted like nothing happened but I was panicking deep inside. The landing was okay though.
@@cementer7665 And even telling some reporters the truth gets changed to get the drama that they want out of what you said. Talked to a reporter officially one time for my job. After that time (and story twisting) I just told them I was not high enough in the food chain.
Hi Juan, Great video as always, having recently converted from Airbus to Boeing 787 one of my many observations is that Boeing refer to this manoeuvre as a “Rapid Descent” as oppose to the Airbus terminology “Emergency Descent” I feel the Boeing terminology takes it even further away from the “terrifying plunge” press statement. At 10:21 you mention increasing speed to Vmo with the caveat if you want to get down in a real hurry.It is my opinion that a quick diagnostic check to determine if damage has occurred to the airframe is that if both Outflow valves are closed, the PACKS are running and differential pressure is not increasing you almost certainly have a hole in the airframe thus damage. In that case increasing speed is not a good idea. As a European operator who flys to the Far East close to the Himalayas there are segments where we will not come down in one continuous descent, yet fly significant level segments as we fly a terrain escape manoeuvre. As we start to fly over high terrain I always have a brief with other crew members as to our procedures with an overrider at the end is that the only thing we must not mess up is getting that oxygen mask on. Once again great video, Cheers Mark
was once in what i think was a precautionary emergency decent (non of the oxygen masks deployed but the plane did descend to 10'000 feet using spoilers)... diverted to SF International. I think the reason seemed to be one of the emergency slides or rafts (partially) deploying into the cabin, the door held, but they were worried about it being pushed out.
Well, I had no idea that cabin oxygen was chemically generated let alone that it becomes mixed with a little smoke and fumes of existing cabin air or that the bag might not inflate.All very useful information, thank you.
When This occurred I Immediately thought of loss of cabin pressure. The media would have reported it a different way if it was any other cause. ie loss of engine or smoke in the cabin. Good on the crew who executed this procedure flawlessly.
Love your channel! I fly a challenger 350. We routinely have to descend at 3500 to 4000 fpm for atc. We do it all the time and no one on board ever notices a thing. Of course we don’t have oxygen masks deployed but as you know 3700 fpm is not that big of a deal. Looking forward to the next video!
We used to do 3500 down in the 1900 with a level deck while at the same time reducing airspeed 40 or 50 knots, and usually with nobody in back noticing.
Great video. I wanted to give you a shout out to let you know that "The Big D" is rebuilding that 757 that hard landed in the Azores. They sent a team over to patch it together for a ferry flight back to ATL. It is currently stripped down to almost nothing forward of the wings. About 25 stringers to replace and 3 or 4 skin sections. I wish I could share pictures but you know how they are these days.
@@blancolirio they don't like pics being spread of airplanes being worked on, especially one in that situation. It looks like Aloha airlines right now with several upper skin sections removed. Google "Delta hard landing Azores" then select "images" and you can see the initial damage. I would be risking my career if I shared pics of the repair in process.
Super informative video. Referring to a future video on the 737 MAX, William Langewiesche's NYT article looks at the entire system, he doesn't just "throw the pilots under the bus". His analysis is indeed one of describing how all the holes in the Swiss cheese lined up, and in the case of the 737 MAX the holes were pretty big. I think it's a great article, despite the sub-headline zeroing in on pilot training.
Absolutely great information to assimilate before an emergency descent happens. Proves that there is NO need to get hysterical about flying while reading click-bait headlines in the news media.
Regarding supplemental oxygen, there's an important altitude to be aware of in situations where an emergency descent is needed due to low/no cabin pressurization and that's 25,000ft. Passenger oxygen masks are typically of the re-breather style with the bag attached to them, but they will not provide the required percentage of oxygen(partial pressure) to the passenger if used above an altitude of 25k feet. The aircraft and/or cabin altitude must be below this level or sucking on that yellow mask hanging from the ceiling probably won't do you much, if any good. Depending on the aircraft and/or typical altitudes flown, the crew will have either diluter-demand(up to 40k) or pressure demand(+40k) oxygen masks, which function at much higher altitudes.
"You guys approaching from the north need to use oxygen; you sound brain-dead by the time you call us," Las Vegas approach controller to yours truly, circa 1995. Those were in the days when I was too cheap to have the oxygen tank refilled.
In 1961 my 1st flight was 4 propeller plane. Each seat above had complete control of things. Want to smoke? Push button & air was sucked out. That one I remember. Had one of only 565 made volvos in 71. It replaced air like 10 times per minute. Q - Why are we UNimproving very important things? Also, hope you are able to show how they fix bridge whose 2 columbs got whacked by a barge. Nice video.
This was a leak with the air connector duct and a flow control valve duct seal issue. The Mask were manually deployed...
Thanks Ken!
ah thank you !
@@blancolirio
Welcome to Seoul Big J!
Been watching you on flight aware all day from Illinois! That was cool.
Long ole grind huh.
Hard to believe those big ole motors grind that long non stop.
She's probably gonna get reloaded, fueled, and head right back.
Stay safe over there.🙏to ya!
I was on this flight, it was traveling normally when they started a descent. I thought this is a little early for a descent and it was a higher rate than for a altitude change for turbulence avoidance. I looked at the flight tracker and saw we were too far out for this to be a normal descent for landing. The only "turbulence" was a vibration because of the maximum rate descent. After about three minutes of the descent the masks dropped down, this caused a little bit of panic in some people. There was an automated recording telling people to put on the masks that was being talked on top of by the cabin crew. The cabin crew immediately started making sure people had their masks on and the captain came on to announce that the sensor had indicated the cabin pressure loss and they started the descent to try and get below 14,000' before the masks would automatically drop and that they just didn't make it in time but the airplane was perfectly fine. After the plane reached the safe altitude the masks were discontinued of use, and the pilot said they were checking with ops to see if they continued to FLL or diverted to Tampa. A few minutes later he came back on to say they are diverting to Tampa and we landed normally albeit with a round of applause.
The biggest thing I want people to know was that the cabin crew did a amazing job of trying to keep people safe and calm, the flight crew did exactly what they were supposed to do, there was no plummeting ,turbulence, chaos, or sudden depressurization, in fact if it had not been for the masks dropping down I would doubt if most passengers would have noticed anything out of the norm!
And that''s why we love you.... Because you ARE NOT the media. Keep up the excellent reporting!
Five stars for calling the outside inlet to the packs a NACA duct. As a young engineer for the Boeing Company (many years ago), I once inadvertently deployed the the oxygen masks during a planned flight test (they were supposed to have been secured) when I deliberately raised the cabin altitude. I heard about that one for about a week. "Do you know what it costs to repack those things...".
Aviation has always enjoyed a fragile public trust that's being strenuously tested now over safety of flight issues on many fronts, including regulatory matters. It's not the job of the press (or anyone else) to brush off abnormal events as merely normative, controllable activities.
Mr. Brown, your technical expertise and even human anatomy ( small eustation tubes) is impressive ! I became a fan when you reported on the problems with the new Boeiings 737 Max.. your expertise and experience is invaluable. I'm also an Air Force Vet ( TAC 69-73) 27350 SCOPE dope. Thanks for your service Brother and Thank you for this information ! You explain complex systems in a way layman can understand. Outstanding !
Thank you Juan... another excellent report! As a retired Sailor and enlisted Naval aircrewman, I had the pleasure of taking a ride or two in the pressure chamber there on Naval Air Station Pensacola back in May 1986 when I was going through Naval Aircrew Candidate School. P-3C crewman! Fun times!!!
As always accurate and informative.
Always thought it was cool how something burning (exothermic reactio) creates enough oxygen the breathe. My dad use to sell a cool welder, toss a oxygen tablet in a can, light it, close the can and you now have pressurized oxygen source for welding and cutting. Lite an oxygen tablet from the welder sitting in a plate in back yard, made an extremely bright blinding white light as it viciously burned away uncontained.
And THIS is why I'm subscribed to the blancolirio channel. It's the only place in the world where I would have learned what really happened with this "Terrifying uncontrolled plunge." Thank you Juan!
Probably the very best explanation on this subject I’ve ever heard or explained myself. I’m a Delta Air Lines pilot in my 40th year. Well done .
Thx Juan, was on Turkish airlines flight, we had a pressurization issue on the B737, crew picked it up , aircraft was not pressurizing, let the pax know, did not go above 13000, watched on the inflight system, descended n returned to the airfield, the cabin atmosphere to the uninitiated flying public was of fear. I was relaxed in knowing the crew caught it, and did their job professionally. Cheers for yr great reporting n vastly detailed insite.
Good job, Juan. Very well done. I had pretty much forgotten the Air Force decompression demo. Afraid mine, back in the '60s, was a little more primitive than yours. You bring back some neat memories for me. Thanks!
I flew with a step daughter who had never flown before, but who had just suffered two ruptured eardrums. She was 8.
There was nothing anyone could do. I told her that it was going to hurt, but she would be OK.
She was a trooper and made it through without any more screaming or crying after we talked.
Juan, adopting the "weightless"
by Aram Bedrosian as your permanent music intro is perfect. Gets me every time and let's me know I'm going to be educated, entertained, and enlightened!
So informative, as always. Thank you Juan for lending your voice to science and facts. You're doing a public service. In an ideal world you would have 100M subscribers.
Thank you, sir.
I was chastized by a few over coffee for saying "System worked perfect, normal, good stuff, good crew." Some said "Oh hell no, it was real emergency, ALL the news reported that!" People (sheeple) are like lemmings going over the cliff. We're in trouble, thanks to media.
We appreciate you, Juan. You're on a genuine mission, and just more than you may know.
Don't stop. All the best.
Your reporting is so distant from the mainstream media it's most believable. Your calm manner has served you well. Idea for future background music. "Come fly with me " My wife and I pray for your complete and total recovery every morning. You will be back in the air before you know it.
I watched Goldfinger and when the window was blown open the pilots worked hard at stopping the out of control plunge of the jet. Since then I thought that decompression caused the plunge. I suspect that many of us without flight knowledge has had the same conclusion. Thanks to your video I now know that it is amazing flying that saves lives by diving to an altitude where the we can get the air we need to support life. Thank you.
As an RN (ret.), I want to thank you, Juan, for reminding passengers to listen to the safety briefing at the beginning of each flight. Granted, if you fly a lot, you may have the info downpat. But it’s always good to listen to it at least every other flight. You might have mentioned that passengers should always apply their oxygen to themselves first before assisting other passengers, even their own children. Your children need you to take charge coherently! Confusion is also an early sign of hypoxia. (Cyanosis - blueing of lips and nailbeds - is almost always a later sign.) And, know where the emergency exits are relative to your seat. That I might be responsible for the lives of everyone behind me is a sobering thought. So if I’m behind you, I don’t want you impeding my egress in an emergency because you were too cool or too smart to listen.
Thanks again, Juan! You’re the go-to guy for Aviation news and explanations thereof. Your little Lieutenant there is adorable!
As an emergency services person, also if you're in an exit row, have a plan, and perhaps discuss it with the other exit row people such as I'll get the door and you help people down the wing. Boy that gets some strange looks. Plan may fall apart right off the hop but you started with a plan. One flight when asked about handling the exit row responsibility, I replied with yes absolutely. Little old lady behind me said 'if it goes wrong, follow that guy' I assured her I'd do my best to make sure she gets out okay.
fastst1 • Absolutely. I second the little old lady’s motion!
And that 'the closest exit may be behind you.'
Thanks, Juan, I've been thousands of flights over 70 years and heard the announcements but had no idea of all of the planning, equipment, and procedures to bring the aircraft and the passengers down to a safe altitude. Thanks so much. You are doing a wonderful service to the traveling public and to FAA who is a mysterious agency to many people. Dean from Minnesota
Best report yet! Truth about altitude chamber!💪💪👏🏻👏🏻🙏👍😮 Thank you Captain
Thank you, Juan. Your videos should be required viewing for all passengers. I feel more comfortable flying with the knowledge you’ve shared through your many videos.
Excellent!! You won't see this type of information on consumer TV. Thankyou!!
No fake news here! Juan, I very much appreciate you taking the time to educate "us" in terms that even an aviator-wannabe like me can easily understand. I have learned a lot from your content. Take good care.
Thanks Franken!
Juan, you have a great channel. Very informative and more trustworthy than mainstream news channels. I'm not sure about now, but back in the early 80s while working on my instrument and commercial, me and a group of students went through the pressure chamber at the FAA facility in OKC, and as you said, it was comical watching the other guys , until it was my turn. The instructor put the mask back on me when he said my eyes rolled white, something I didn't feel. And when I saw what I was writing, it was nothing anyone could read. The altitude was just under 23,000 feet, and I was in my early twenties and very healthy. Imagine today! This type of training should be available, ours was free, to more civilian pilots, as with me, it tells you what the limits are. Great work on your channel. Best of luck with your medical.
The surprise ending is a show stealer. And it's a high level 'descent' presentation. Very useful to learn the detail about the smell when oxygen mask system is deployed. Thank you Juan.
Thanks Juan,retired six years ago,your videos are like a monthly recurrent training session.
1:20 - 1:34. Those 14 seconds just cemented this channel as THE best aviation RUclips channel going 👌🏻🛩️.
I got the flightradar 24 alert for this and had no idea until a day after what had actually went on. I was monitoring ATC and flight path and the pilots made it seem like it was just a regular old landing. Very impressive
With that o2 cooker, you could actually have popcorn or a hot meal on a peanuts-only flight . I’ll bring a meatball sandwich whenever I fly. That’s some great info for me as a traveler. I appreciate the detail and never would have thought it wasn’t from an o2 tank, so it’s good to know about the heat and smoke. That probably freaks some people out, especially in that Delta inverted spin stall from 55000 to 170 feet in 6 seconds.
Capt. Tammy Schultz never declared an emergency during the SW 737 engine failure, just started her descent without approval from ATC, it floors me that nobody has pointed that out to the general public.
Thank you Juan, for telling the world what is required and expected during an emergency descent in a jet airliner..:-)
Grab your mask, then Aviate, Navigate, Communicate. If you have spare neuron, squawk "emergency". Most airliners have a single switch or button that will set that transponder code. ATC controllers aren't dumb. Even without a mayday call they will react to the squawk and the descending altitude readout. When you have everything stabilized in the descent, then it's time to talk outside the cockpit.
On a Delta flight years ago, I listened closely to the safety brief. Pretty sure the correct word was supposed to be 'streaming' in regard to the tubing attached to the cup, but the actual words I heard were, "...when you finish screaming, help the other passengers..." FA earned my total respect.
The Media loves to toss Scare Headlines around, regardless if it is justified. Click Bait, yeah, a classic example for sure. They figure who is going to read an article that is titled "Well trained pilots take care of the problem in a timely manner with no issues!"
"It's so much easier to sell tickets to the Ghost Train than the Tell Your Weight Machine" - James O'Brien
wow! totally learned abt the oxygen mask system. always so interesting. maybe ive discovered i love planes. flying? not so much. thanks for the tips.
Their primary purpose is to sell ad space, make no mistake. Sure that can definitely be true here in YT land but TV has it down to an exact science. Fear, Fear, Fear, Fear and now a word from our sponsor.
As Mark Twain said, "never let the truth get in the way of a good story". Publishing gossip magazines is a billion-dollar business. The truth in those couldn't be spread any thinner.
Evan J you forgot the mindless bliss they throw in between sometimes. “Puppies Saved By Mother Cat From in Front of a Steam Roller!”
I've been on a Fijian airlines 747 when we had an aircon/pressurisation failure. It sounded like being on a motorbike at 300kmh, as well as getting the hypoxia effects as described in the video (not all bad). I do remember the captain saying, I'm sorry, but we can't keep going on like this and were going to go down rather quickly. 😢😢. An emergency decent and 30min dumping fuel later, we were safely back on the ground. These guys are well trained for these eventualities....
I saw something about that incident on the internet and shook my head at the misleading headlines. Your reporting confirms what I was very sure actually happened, that the pilots made a controlled descent to 'habitable' altitude. Fortunately, many of the commenters online understood the misleading nature of the media report. Thank you for a good follow up report!
Awesome explanation as usual. The best I've seen explaining aviation!
I have been on many altitude chamber rides. Very interesting to see my symptoms. I was always amazed at how fast colors came back ... with one puff of oxygen. As a private pilot I wished we had this training as in our aircraft we fly on the edge of safe oxygen levels many times. I have recently heard that general public can attend chamber school on OKC put on by FAA. Not sure if pilot license is required. I would strongly encourage all pilots to take this training.
So much invaluable and useful information crammed into one video. Learned so much about oxygen supply to pilots and passengers. Thanks for these videos.
Another Tech issue explained in lay terms allowing understanding a plausable outcome, thanks Juan.
It was a by the book "controlled emergency descent." Thanks for the USAF training info and the difference between a slow and rapid altitude change. I suspect the Paine Stewart aircraft crash was the result of a rapid altitude leak resulting in immediate incapacitation.
A few weeks ago I was on a United flight that was delayed because the microphone in the co-pilots oxygen mask wasn’t working. While I was annoyed about the delay, it was reassuring to know that they check this before departure! Fortunately they were able to get a replacement mask within 30 minutes and off we went.
the Navy used to call those OBA canisters. (oxygen breathing apparatus) It was the main source of air for firefighting before the service switched to compressed air tanks. OBAs were in use before/during WWII thru the middle 1990s There were also individual Emergency Escape Breathing Devices (EEBDs everything has an acronym ) mounted in a ready access box inside your coffin rack to escape a smoke filled berthing compartment. Trivia. Yes they do get super hot. I am glad that I dont have to change them out since the combustion temperature for loose leaf paper is 450 and they beat that by 150
That brings back some memories! If I remember correctly, there was an hour timer on them that you wound up to the hour then brought it back to the 30 min mark. Then a bell would ring at 30 min to get you out of the space. On the subs, we had the EAB's that provided O2 off of the oxygen banks. You had to know where the manifolds were to get fresh air. And that is why we drilled so much!
i was sitting here after studying some of my ground school manual and was wondering what to do the rest the evening i saw the red dot on utube and clicked it and there you were i would rather listen and watch your presentations than study great job it was fantastic and you made it so clear thanks for sharing great job STUDENT PILOT ED
Thanks Ed! Keep studying!! It never stops....
@@blancolirio im finding that out but i burn inside for aviation my dad had a stearman and a j3 cub thats what put it in me thanks sir
I love it - someone who does not follow on this panic kind of reports but EXPLAINS what has happened. Could we please all come back to this level - or at least into this direction?
Thanks for your continuous sober and precise explanations!
Thank you as always for providing up to date news on all things aeronautics! And thank you for always clearly explaining everything
I was an aircrewman in the USCG, and went through altitude chamber training at least once {maybe twice, been awhile}.
It was useful to help you recognize the effects of hypoxia.
Sounded like a well executed Emergency Descent!! You have a gift Juan of explaining some technical procedures so the common man can understand. Thank You and keep up the great work. Hope you are feeling better. Lt. Pete had it Perfect...Aviate, Navigate, Communicate. Well Done!!
crazy thing: during the reno races i was skimming through juans back catalog when i realized he had made a video i watched a couple years before i knew about him about the zipper amusement park ride. been watching since the first oroville video. thanks for the good work man. glad it's panning out. love your content.
also gotta say: i really hope mike patey keeps making videos. that's a really crappy thing he's dealing with.
every time you talk about the oxygen generators i think of Value Jet.
That's exactly what I was thinking. I still think about the screaming from the passengers as the fire breached the passenger cabin.
Thanks Juan. Awesome update. No questions!
Thanks Juan, I missed listening to another safety demo because I was watching your video.
juan u are precise informative and making this info digestible to the clueless in aviation... thumbs up bro..keep it coming
Very interesting vid. As somebody with over a million miles clocked up on Thai Airways, I had always wondered what would happen (smoke and smell wise) if the masks dropped.Thai usually gives me 3 seats to myself so I guess I could use the three masks sequentially! BTW, I have a CPL Rotary and type rating R22. In case of engine failure, you got 1.5 seconds to set up for auto rotate or else say your prayers.....10 to 15 seconds is long enough to hit the turf.
As always, informative and non alarmist approach...funny reminder at the end
Great input from Pete! I loved it.
Well done dissertation on the RD issue. I am glad that you did not mention the other physiological effect that goes on in that altitude chamber concerning bodily gas expansion. :-) Going back to a previous VLOG concerning AOA indicators you showed pic. of a big one on the dash of the T-38. To the best of my recollection when we flew the "white rocket" with small wings (class 70-2) it did not have that feature installed yet. It was needle ball and airspeed. :-) The NYT article by William Langewiesche concerning the 737 issue was about as thorough and accurate as one will find in the MSM. Lost of blame to go around, definitely on Boeing's part but also the training and experience (I should say lack of) on the part of many newer generation pilots especially foreign but also domestic when it comes to the issue of airman-ship. Best wishes on your return to active flying!
Juan,
Great and informative video on this incident and situation. Great explanation of the 'hows and whys' of emergency descents. Thank you!
God bless
Paul
Capt. U have stated that Bleed/Ram air used for cabin pressurisation !! just to clarify the ram air is used only to cool the bleed air through the heat exchangers.. it does not enter the cabin ...
I like the way you explained the “simple” procedure for an emergency decent. But you also inadvertently explained why the Helios crew failed to respond to their gradual loss of oxygen.
Not inadvertent.
Juan, you have aviation fuel in your veins! You know this stuff backwards and forwards! So cool to watch your many, varied subjects! Thanks!
Wow, very well explained and thought out. Thank you for all the excellent info. What if we had a million more people like you...
Great as always, I reccomend your videos whenever I can.
As always on point and no media BS. Keepin it real.
Great ending to a very informative video - Lt Pete - priceless!!
On the lower pilot window frame on the 757's is a decal " WINDOW NOT CLOSED ". I would like to hear the story that prompted the warning. I have run engines with it
opened and it is not that quite. Good show.
Thanks Juan..!! your video reminds me of the Payne Stewart jet disaster
Juan, your production helps us be aware of the importance of listening to the safety briefing. Thanks. J3 Bob
When you want the REAL story, this is the place to be!
My Father worked at Lockheed and I remember him telling of a pressure regulation problem in a Jetstar caused by cigar smoke tarring up a valve.
If every smoker was required to clean the outflow valves from a plane that had been smoked in, I bet it would cure half of them of the habit. Phweww! Aversion Therapy 101.
happened quite often in the old days. Die hard smokers taking a smoke break by the outflow valve on the C5....
I've flown a lot, never experienced an emergency descent. The most surprising event to ever happen to me was a mountain updraft launched the port wing nearly vertical from a horizontal flight for a bout 2-3 seconds.
Pay ATTENTION to your flight attendant and briefing. And man buns are prohibited on all flights.
11:00, Enroute IFR charts have track MSA, or minumum sector altitude, which offers a 1000' clearance from terrain along that track for a set space either side.
Never knew you had to tug the oxygen mask! Great video Juan!
Great follow-up on the media “headline” report. I really enjoy your “pilots perspective” reports on passenger flying. Happy to report I keep my feet on the deck! Thanks for the update - will be interesting to hear what the emergency was.
Great job reporting! Keep them coming and be well.👍🏻👍🏻✌🏻
The best Dam reporter who know how to explain his HIGH-poxia.
It's DAMN reporter. And it's HYPOXIA. Double DUH. Lemme guess: you're in your teens or 20's, and high-school was a bitch. So was English Comp 101. Double DIPSHIT.
@@DefaultName-yq3zj Cool it. marcuswhonea was merely punning on Juan's reports about the Oroville dam and the fact that one can get high if suffering hypoxia.
@@DefaultName-yq3zj you must be new to the channel.
What was that Judy Collins song? Oh yes "BRING IN THE CLOWNS"!
"Don't bother, they're here."
Well done as always Jaun! I think your videos provide a great service to the public, not to mention your fellow pilots.
P.S. Spot on Pete! 👍 Lol Great job following in those footsteps.
Juan, thank you for continued explanations and bringing good sense. So much hysteria and miss conception.
Paul.
I was in the back of a Continental 727-200 for a real pressurization failure - first you notice your ears, then the fizz explodes from your soda - I was a 12 year old and a pilot's kid, I had literally read the book (operations manual) on the 727 - I said to the lady next to me, "Next the masks will come down". She said "Lord, I hope not", I said "We're going to need them" They did. This being back in the day when smoking on airplanes was still a thing the flight attendant PA was emphatic about extinguishing cigarettes and putting the masks on. The nose goes down to a surprising degree - even to a pilot's kid - and with the spoilers up and speed at maximum mach the 727 is noisy and shaking, and you are tending to fall forward from your seat.
It was after we were level at 10,000 feet (6-7 minutes later) that we heard from the cockpit. Afterward, on the ground, it became clear that I had been the only person aft of the cockpit door (including the flight attendants) that knew we were going to level off. They had been trained about what to do when the masks came out, but not what would happen next. At Continental the pilots and the cabin crew received revised training as a result of that incident - the pilots to include "to the passengers" in the "Communicate" phase - once the descent was stabilized, and the cabin crew to know that the plane will descend rapidly to, and then level off at a habitable altitude. For me it was novel, but for my Mom (who was several rows away - (full flight and we were non-revenue passengers) and everyone else it was obvious that something had gone wrong (rubber jungle) and the plane was doing alarming things (pointing in the direction of the ground, roaring and shaking) and the flight attendants looked and sounded frightened...about as much fear as you can generate and not hurt anyone. No one screamed (having a mask on helps - my mom said she was too busy praying to scream). Everyone clapped when we touched down.
I don't know what was said to the passengers at what point in this event, but the overall experience wouldn't have been much different - as far as those passengers are concerned, at least for a few minutes they had every reason to believe that it was an out of control plunge. Many of them had probably texted final thoughts to their loved ones - so I think the media can be forgiven for being a little breathless telling their stories.
There are perks to being a nerd. I can remember one flight with horrible turbulence that had the passengers around me nervous, with a few further forward starting to visibly panic, all the while young (like ~10-12-year-old) me was smiling like a lunatic just enjoying the ride. Granted this wasn't nearly as dramatic as your situation, but it was surreal thinking I had a better understanding of what was happening than the hundred-some adults around me.
I think on any flight when the plane is in rapid descent and the oxygen masks come down, pretty much any normal person is going to crap their pants.
I have to disagree about the "media" being a little breathless, THEIR JOB is to report FACTS, and FACTS they do NOT get from interviewing a passenger, the same passenger who probably had trouble finding his, or her seat when boarding, but of course with a little coaching, for some added dramatic effect, the 'reporter' is NOT going to put FACT above sensationalizing the 'story'.
Rich Sarchet I was on a short flight on Braniff a long time ago and the coffee was so good I ordered a second cup. The second cup was instant coffee. Everyone around me acted like nothing happened but I was panicking deep inside. The landing was okay though.
@@cementer7665 And even telling some reporters the truth gets changed to get the drama that they want out of what you said. Talked to a reporter officially one time for my job. After that time (and story twisting) I just told them I was not high enough in the food chain.
Congratulations Juan on your passing 100,000 subscribers !! AND on other sites linking to you ! (Fliegerfaust).
Thanks for the report Captain Browne !
Hi Juan, Great video as always, having recently converted from Airbus to Boeing 787 one of my many observations is that Boeing refer to this manoeuvre as a “Rapid Descent” as oppose to the Airbus terminology “Emergency Descent” I feel the Boeing terminology takes it even further away from the “terrifying plunge” press statement. At 10:21 you mention increasing speed to Vmo with the caveat if you want to get down in a real hurry.It is my opinion that a quick diagnostic check to determine if damage has occurred to the airframe is that if both Outflow valves are closed, the PACKS are running and differential pressure is not increasing you almost certainly have a hole in the airframe thus damage. In that case increasing speed is not a good idea. As a European operator who flys to the Far East close to the Himalayas there are segments where we will not come down in one continuous descent, yet fly significant level segments as we fly a terrain escape manoeuvre. As we start to fly over high terrain I always have a brief with other crew members as to our procedures with an overrider at the end is that the only thing we must not mess up is getting that oxygen mask on. Once again great video, Cheers Mark
was once in what i think was a precautionary emergency decent (non of the oxygen masks deployed but the plane did descend to 10'000 feet using spoilers)... diverted to SF International. I think the reason seemed to be one of the emergency slides or rafts (partially) deploying into the cabin, the door held, but they were worried about it being pushed out.
Well, I had no idea that cabin oxygen was chemically generated let alone that it becomes mixed with a little smoke and fumes of existing cabin air or that the bag might not inflate.All very useful information, thank you.
When This occurred I Immediately thought of loss of cabin pressure. The media would have reported it a different way if it was any other cause. ie loss of engine or smoke in the cabin. Good on the crew who executed this procedure flawlessly.
Loadmaster briefing for the Army: "Sit down, Shut up, Keep your feet off the seat." Great job, keep up the good work.
Love your channel! I fly a challenger 350. We routinely have to descend at 3500 to 4000 fpm for atc. We do it all the time and no one on board ever notices a thing. Of course we don’t have oxygen masks deployed but as you know 3700 fpm is not that big of a deal. Looking forward to the next video!
We used to do 3500 down in the 1900 with a level deck while at the same time reducing airspeed 40 or 50 knots, and usually with nobody in back noticing.
I sure learn a lot here listening to your forensic analyses. Thank you Juan..Been following since you first started posting.
Flawless presentation, as usual. Well done sir.
Once again well done Juan. Destin from Smarter Every Day has a great video about the hypobaric chamber where he's in a military facility.
I was on a Delta flight last Tuesday where we did a tight 360 in the pattern on the downwind into lax. Altitude was 3000 ft. Felt evasive and weird.
to get spacing on traffic ahead.
Great video. I wanted to give you a shout out to let you know that "The Big D" is rebuilding that 757 that hard landed in the Azores. They sent a team over to patch it together for a ferry flight back to ATL. It is currently stripped down to almost nothing forward of the wings. About 25 stringers to replace and 3 or 4 skin sections. I wish I could share pictures but you know how they are these days.
Wow! Link to pics?
@@blancolirio they don't like pics being spread of airplanes being worked on, especially one in that situation. It looks like Aloha airlines right now with several upper skin sections removed. Google "Delta hard landing Azores" then select "images" and you can see the initial damage. I would be risking my career if I shared pics of the repair in process.
Super informative video. Referring to a future video on the 737 MAX, William Langewiesche's NYT article looks at the entire system, he doesn't just "throw the pilots under the bus". His analysis is indeed one of describing how all the holes in the Swiss cheese lined up, and in the case of the 737 MAX the holes were pretty big. I think it's a great article, despite the sub-headline zeroing in on pilot training.
Love your training buddy ! Take care.
Absolutely great information to assimilate before an emergency descent happens. Proves that there is NO need to get hysterical about flying while reading click-bait headlines in the news media.
Great informative video Juan. But I gotta say That was a beautiful snowy mountain scene at about 11:00...where is that scene located?
Alaska?
Regarding supplemental oxygen, there's an important altitude to be aware of in situations where an emergency descent is needed due to low/no cabin pressurization and that's 25,000ft. Passenger oxygen masks are typically of the re-breather style with the bag attached to them, but they will not provide the required percentage of oxygen(partial pressure) to the passenger if used above an altitude of 25k feet. The aircraft and/or cabin altitude must be below this level or sucking on that yellow mask hanging from the ceiling probably won't do you much, if any good. Depending on the aircraft and/or typical altitudes flown, the crew will have either diluter-demand(up to 40k) or pressure demand(+40k) oxygen masks, which function at much higher altitudes.
Thank you for an awesome job with the updates I'm on vacation in Iceland so are my main source of information on what is going on back home
"You guys approaching from the north need to use oxygen; you sound brain-dead by the time you call us," Las Vegas approach controller to yours truly, circa 1995. Those were in the days when I was too cheap to have the oxygen tank refilled.
Thank you again. Much of this I already knew, but you do a great job of presenting it!
In 1961 my 1st flight was 4 propeller plane. Each seat above had complete control of things. Want to smoke? Push button & air was sucked out. That one I remember. Had one of only 565 made volvos in 71. It replaced air like 10 times per minute. Q - Why are we UNimproving very important things? Also, hope you are able to show how they fix bridge whose 2 columbs got whacked by a barge. Nice video.