Extremely HIGH TEMPERATURE in the COCKPIT | Atlas Air Boeing 747-400 | Miami international airport

THIS VIDEO IS A RECONSTRUCTION OF THE FOLLOWING SITUATION IN FLIGHT:
17/18-FEB-2021. An Atlas Air Boeing 747-400 (B744), registration N429MC, performing flight GTI73 / 5Y73 from Miami international airport, FL (USA) to Bogota El Dorado international airport (Colombia), During climb out of Miami, about at 15000 feet, reported about high temperature in the cockpit and requested return. On approach to Miami the pilots requested emergency equipment on the ground.
PART OF TEXT VERSION OF COMMUNICATIONS THAT I'M ABLE TO INCLUDE HERE. Do you want more? Write in comments and I'll give you remaining part of text communications (Read if subtitles in video were fast):
COMMENST: GTI73 was climbing out of Miami.
GTI73: Miami, GTI73.
CENTER: GTI73, go ahead.
GTI73: I’d like stop our climb. We need to come back to Miami.
CENTER: GTI73, roger and is there an issue?
GTI73: We have the temperature in the flight deck is getting extremely hot, so we wanna come back.
CENTER: GTI73, roger, cleared to Miami international airport via left turn, direct to Miami, descend and maintain 12000.
GTI73: Direct to Miami, 12000, GTI73 Heavy.
GTI73: Miami, GTI73.
CENTER: GTI73, go ahead.
GTI73: Yes, sir, we need to dump fuel…
GTI73: Can we begin now?
CENTER: GTI73, how long do you need to dump fuel?
GTI73: Stand by.
GTI73: About 13 minutes.
CENTER: GTI73, roger, fly heading 090 and you’re cleared to dump fuel.
GTI73: Roger, heading 090, cleared to dump fuel.
CENTER: GTI73, when you… wanna start heading back toward Miami, just let me know and I’ll give you turn back.
GTI73: Roger that.
CENTER (Probably with another controller): No, he said, he just needed to go back, but I’ll ask him again, just to make sure. I asked him first time but I’ll just make sure.
CENTER: GTI73, do you need anything standing by or anything like that, any kind of services?
GTI73: Stand by.
GTI73: Miami, GTI73, we’d like to come back now.
CENTER: GTI73, roger, you’re cleared to Miami via left turn direct Miami.
GTI73: Left turn direct Miami, GTI73 Heavy.
CENTER: And do you need anything or not?
GTI73: At this time negative.
CENTER: GTI73, roger.
GTI73: GTI73, just to verify, you’re not declaring an emergency or anything like that, correct?
CENTER: That’s correct.
GTI73: GTI73, contact Miami Approach 119.45.
CENTER: 119.45, GTI73.
GTI73: Miami, GTI73, 12000, proceeding direct to Miami.
APPROACH: GTI73 Heavy, Miami Approach, good evening, expect vectors ILS RW 8R, arrival ATIS G is current. Wind is 180 at 8, Miami altimeter 3008
GTI73: Copied that and information G was picked up, GTI73.
APPROACH: GTI73, speed is at your discretion, descend and maintain 8000 at your discretion.
GTI73: Descend and maintain 8000, GTI73 Heavy.
APPROACH: GTI73, and did you guys complete your fuel dumping or are you still in progress?
GTI73: Fuel dumping is completed.
APPROACH: Thank you.
GTI73: Miami, GTI73.
APPROACH: GTI73 Heavy, turn left heading 270, go ahead.
GTI73: 270, we’d like to have equipment standing by, just in case. It’s getting really, really hot up in the cockpit.
------ This is maximum I can write here. Do you want more? Write in comments and I'll give you remaining part of text communications -------
THE VALUE OF THIS VIDEO:
THE MAIN VALUE IS EDUCATION. This reconstruction will be useful for actual or future air traffic controllers and pilots, people who plan to connect life with aviation, who like aviation. With help of this video reconstruction you’ll learn how to use radiotelephony rules, Aviation English language and general English language (for people whose native language is not English) in situation in flight, which was shown. THE MAIN REASON I DO THIS IS TO HELP PEOPLE TO UNDERSTAND EVERY EMERGENCY SITUATION, EVERY WORD AND EVERY MOVE OF AIRCRAFT.
SOURCES OF MATERIAL, LICENSES AND PERMISSIONS:
Source of communications - www.liveatc.net/ (I have a permission (Letter) for commercial use of radio communications from LiveATC.net).
Map, aerial pictures (License (ODbL) ©OpenStreetMap -www.openstreetmap.org/copyrig...) Permission for commercial use, royalty-free use.
Radar screen (In new versions of videos) - Made by author.
Text version of communication - Made by Author.
Video editing - Made by author.
HOW I DO VIDEOS:
1) I monitor media, airspace, looking for any non-standard, emergency and interesting situation.
2) I find communications of ATC unit for the period of time I need.
3) I take only phrases between air traffic controller and selected flight.
4) I find a flight path of selected aircraft.
5) I make an animation (early couple of videos don’t have animation) of flight path and aircraft, where the aircraft goes on his route.
6) When I edit video I put phrases of communications to specific points in video (in tandem with animation).
7) Together with my comments (voice and text) I edit and make a reconstruction of emergency, non-standard and interesting situation in flight.

[@hobbesip1]

A "hot cockpit" sounds like a maneuver one might stumble upon on urban dictionary :D

[@adriananzano2292]

lol!

[@junothejupiterorbiter1035]

Hot cockpit

[@kennethr2906]

🤣🔥

[@nzkiwi9]

Try this on for size... the the problem was the master trim air valve. It failed in the open position which resulted in super heated air from the engines being blasted into the aircraft, including the cockpit. The cockpit was about 115 degree Fahrenheit. Excessive heat like this will cause cascading electrical failures.

[@davidsp5936]

To say nothing of the pilots passing-out.

[@devintariel3769]

Fucking hell might as well turn on the autopilot and take shifts in there

[@SpitfirePC]

That's 46°C, they were lucky to not lost conscious.

[@Chris.Row1991]

@@SpitfirePC come to Australia mate, it easily gets over 46°C in summer and even hotter if your out in the sun. Most workplaces like builders and warehouse workers get the rest of the day off if it gets to around 40°C‐45°C. Happened to me a few times. Takes more than that to cause someone to lose consciousness usually, though I have had heat stroke and thought I was going to pass out I was fine after getting in the shade and pouring a bottle of cold water over myself. Although I certainly wouldn't want to be stuck in a small enclosed space like a cockpit at that temperature. My cars air-con doesn't work so I know how much it can suck being stuck in a small space with hot air blowing on you.

[@donnarupert4926]

@@Chris.Row1991 Come here to Arizona in the summer, same nonsense!! 118 degrees F.🥵My air conditioning is busted too!! I bring bags of ice 🧊 in the car and put it on my neck and shoulders while driving!!!

[@geko7844]

Never heard tower declare an emergency for the pilots before .. that was interesting to hear!

[@juusojd]

Only in US lol. But its fairly standard practice there.

[@karmathebrit7856]

If you request services, they usually do

[@nicodem2310]

@@juusojd No only in US, same here in france if needed

[@w.ryanbutler8097]

"Oh, silly me. I set the air conditioner for 72 degrees thinking it was in Fahrenheit, but it's really in Celsius! Sorry about that!"

[@crazypete3759]

wouldnt be surprised. Air Canada flight 143 ran out of fuel because they loaded in Kg instead of Lb. When will the US finally catch up with the rest of the world and start using metric?

[@jamessimms415]

@@crazypete3759 Never would be ok by me.

[@crazypete3759]

@@jamessimms415 enjoy being one of only three counties in the world that is still stuck using the imperial system. The U.S., Liberia and Myanmar are the only three countries that cant get with the rest of the world...

[@heindaddel2531]

@@crazypete3759 At least US Army uses meters, but probably because they are part of NATO.

[@jr13227]

“Is there an issue?” No we just decided we felt like going back to Miami.

[@ridernotrunner]

You know there's a problem when the heat in Miami is more comfortable than the heat at 12,000 ft.

[@doverby]

I'm amazed at all these Boeing 747-400 systems experts here commenting on this thread.

[@rennyvangrieken2159]

My answer was not a guess.

[@doverby]

@@rennyvangrieken2159 I don’t know which answer was yours. There are some doozies.

[@gmugrumbach]

Actually, the 747-400 Cargo model is equipped with an Excessive Heating System (EHS). It's activated above FL100 when the pilot decides it's too cold.

[@doverby]

@@gmugrumbach Nice! Do the hydraulic system!

[@Kalvinjj]

@Hank Hildebrant Indeed, and like, when the guys have lithium batteries on board and things get hot, I bet they don't wanna risk anything, damn things are nasty angry chemistry bags. Nobody wants another UPS Flight 6 after all, they definitely knew the chance of fire was small but better safe than sorry (plus can't safely pilot a plane when the pilots are having a heat stroke)

[@cshoffie6593]

This is why my wife and I have separate climate controls in our cars.

[@stefanjevic3021]

Hats off to the crew for keeping such a cool head (pun not intended) amid the circumstances. I am at the beginning of my flying career flying around in a Sirrus SR20 in the Australian heat very often, the aircraft is not equipped with AC nor opening windows, flying at 2-3pm in the middle of summer can mean that under the hot sun and with OAT of 40+ degrees on the ground (we’re only around 2000ft above). I melt every single time, staying focussed and remembering to drink water takes a lot of effort, not to mention flying the aircraft. The first time round we were doing just over an hour of steep turns and I asked the instructor to call it quits as I could not focus at all anymore (nor bare it) due to the heat. That’s with an instructor next to me and no potential issues with the aircraft unlike this crew. My point is - well done to this crew, I will STFU about the heat to my instructor after this!!!

[@QWOP_Expert]

Wow, massive oversight on the SR20. Apparently, you can get a $30k aftermarket AC for the SR20. Seems worth it to me.

[@Vititi16]

I feel you, I’m in your same position in a Cessna 172, but not that high , the sweat in the eyes makes everything difficult too!

[@suzukirider9030]

​@@QWOP_Expert I wouldn't... the SR20 isn't very well climbing as it is, and if it's THAT hot, with the A/C (adding weight while taking power from the engine) - it would lead to unsafe flying. Had my share of cooking in a Berkut-540. No A/C either, just a vent blowing 45C air in my face...

[@JOSHL50]

Actually, you are smart to say something when you aren't able to focus. Much better to say it before than after ......

[@MichaelSeaBelA]

Makes me think of UPS Flight 6 in 2010. Thankfully this plane made back safely.

[@ryanlester761]

Me too. So sad.

[@sarahivsutterb747]

Jokes aside - but I need to say that : the cockpit has been a cookpit for these guys there! Luckily with a good end for them! And this pilot who made the conversation with the ATC and the other things : You did an amazing job with it - kudos for you and your colleague in the cockpit! Lovely greetings from Captain Sarah Sutter (Boeing 747-400/747-8i/F)🙋‍♀💗👍👌💪😎✈️

[@nickv4073]

It was those damn blend doors again just like my GMC Yukon.

[@w00tDr]

Atlas Air's 747-400 operations manual clearly indicates that the FRY HEAT switch remain in the standby position until reaching cruise altitude. If the switch is turned on at the beginning of flight, then the fries and funnel cakes will cook too soon (they should not be served as a first course), and the excess heat from the fryolator could heat up the cockpit, It seems the pilots forgot the golden brown rule of aviation: aviate, navigate, communicate, fryolate.

[@ridernotrunner]

The funniest thing I've read in months. Thanks.

[@captainjohnh9405]

The aircraft was a rare 747 retrofitted with the Saab-O-Matic air conditioning.

[@cessnan411ce5]

Just roll down the windows. Lmao.

[@maxlemaire6295]

Juan Brown is gonna have a field day with the pilots not declaring an emergency.

[@nicolassales8679]

Yes, and for asking what they could do instead of explaining what they needed ATC to do.

[@budyeddi5814]

Blancolirio is the MAN

[@donnarupert4926]

🤣

[@weebgrinder]

"We are cooking up here." fly the airplane, first. Then cook.

[@johnp139]

Aviate, navigate, communicate, cook.

[@737driver]

Surely you must be kidding.

[@aerofiles5044]

@@737driver Surely YOU must be kidding to not understand the joke?I

[@737driver]

@@aerofiles5044 please stop calling me Shirley

[@aerofiles5044]

@@737driver What are you talking about.

[@beadbird]

Thank God the pilots are okay! Thanks for another good video. :-)

[@YouCanSeeATC]

👍

[@coca-colayes1958]

Was kelsey on this flight , Actually today at sydney I watched a 747 atlas air doing s high bank angle it looked so peaceful and slow doing a low circle was beautiful to watch , was thinking of 74 gear

[@wellgeo223]

Came here looking for a Kelsey comment.

[@donnarupert4926]

Kelsey is cool 😎

[@dietzold]

“ Miami, any primary school nearby, for us to dump fuel over ? “

[@suzukirider9030]

Hey, FL is a republican state, why would anyone wanna dump fuel on their schools?

[@techhelpportal7778]

@@Vontai21 republicans aren't stupid like the Dems

[@roaldnordeman6533]

Probably a stuck L/H TCV valve. Happens now and then. Was an AD for the B737 in 2016. Most likely the same p/n in the B747.

[@obamabigears734]

It happened to myself one time on a 747-8 and the only way to clear the issue was completely depower the whole airplane, luckily for us it happened on the ground, but it got really hot for sure.

[@sickkunttv8611]

Yeah I'm sure you know 747 engineer.

[@nzkiwi9]

Master trim air valve stuck open

[@selftrue670]

Lithium batteries onboard + extremely hot cockpit = emergency every single time. No doubt, no assumptions about AC packs or anything else. A heat source unrelated to lithium batteries can quickly become related to lithium batteries.

[@juusojd]

There was no smell of smoke tho? Porpably just a faulty temperature controller.

[@TheBeingReal]

Just where are these supposed lithium batteries?

[@juusojd]

@@TheBeingReal In the cargo hold.

[@TheBeingReal]

@@juusojd that would be a fire and alarms would be going off. Not heating the cockpit up. There are extremely strict regulations on shipping lithium-ion batteries by air.

[@kirilmihaylov1934]

@@TheBeingReal may be there was fire

[@drey8696]

Any given day here in Texas in my Cherokee.

[@justethical280]

Well, El Cajon (Cal.) too....

[@johnp139]

They forgot to turn on their air conditioning.

[@megat8989]

Try to put the trim air switch to off. Let the acm does the temperature control

[@Evan-ed7pu]

I’m guessing the valve that directs hot air to the cockpit to heat it got stuck open and kept blowing hot air into the cockpit

[@TheEviling]

Or the exhaust for the air out of the cockpit was stuck closed, either way, seems like ventilation failed.

[@robertgary3561]

Lithium batteries have been known to do this. They can runaway and generate heat, not smoke.

[@ScottBrandt]

And I thought it was expensive when my A/C breaks. That A/C costs them 10+ of dumped fuel.

[@planesense7390]

breaks

[@curtisbeers9383]

Johnny left the iron on.

[@Dinngg0]

Maybe a overheating issue in the Avionics bay? Lucky the instruments kept online.

[@billsheehy1]

I agree

[@bmused55]

Unlikely. The Avionics bay is not directly under the cockpit. It's below the cargo deck. In order for the avionics bay to heat the cockpit up, it would first need to heat the cargo deck. There just isn't enough energy in the avionics for that.

[@ArmyofSeaturtles]

@@bmused55 yes your right, however if there's a (avionics)equipment cooling failure, the flight deck would be filled with caution warnings and pilots must land immediately

[@shreddder999]

Not enough information. How hot was it getting? Sounds like bleed air was not getting cooled enough.

[@81tibr]

🔥

[@nickmellon6677]

They landed and realized they had the HVAC dial set to heat instead of AC.

[@gpslightlock1422]

Should have come in direct on RW27 to get on the ground sooner. If those pilots lost ability to control that aircraft over Miami that would have been a very bad situation. Very glad to hear all are ok. Great work by Victor as usual!

[@CameTo]

I was gonna dispute your suggestion because of the winds, and a heavy landing with 5hours of fuel after the dump, until I saw the winds were reported at 180... It's a good job your suggested course of action didn't play out, as it wouldn't be the first time a small but concerntrated electrical fire took down an airliner by burning through the control wires and circuitry, as the pilot was politely complying with ATC for 2/3rds of the way down... So on really mulling this over, you were right and I can see why ATC declared the emergency on behalf of the crew, who were likely unwilling to kick up a fuss because there was no flashing red handle with a bell ringing. Edit: the crew as always don't have 20/20 hindsight or time to mull every situation, 27 should have been offered

[@tomstravels520]

@@CameTo actually sounds like he says winds are 150/8. He definitely does say the wind speed the same as the wind direction for the digits

[@planesense7390]

its easy to be a monday morning quarterback by posting a comment but at 12k feet in an emergency its obviously a different perspective

[@cockatoo010]

And that's why my Amazon parcel got delayed...

[@tabel4844]

So original..

[@4stringmanagmaildcom]

My neighbor flies for Giant. I'll ask him about this.

[@YouCanSeeATC]

👍

[@nzkiwi9]

Try this on for size... the the problem was the master trim air valve. It failed in the open position which resulted in super heated air from the engines being blasted into the aircraft, including the cockpit. The cockpit was about 115 degree Fahrenheit. Excessive heat like this will cause cascading electrical failures.

[@videopokernetwork6824]

Was he on his checkride? That could cause a rise in temperature.

[@VirtualDementia]

lmao

[@mrderen1]

We have cooking clearance Clarence. What’s our vector Victor?

[@YouCanSeeATC]

🤣

[@StickandGlider]

A couple of hot shot pilots!

[@cherifbar]

What was the issue? I was concerned they may have a had a fire from those Li batteries? Glad all worked out fine.

[@johnp139]

The pilots were just hot.

[@sloopjohnb.24]

@@johnp139 was it their hair making them hot?

[@_chipchip]

What Li hss as batteries? It’s a 747...

[@williamwinborne3253]

@@_chipchip it’s a cargo plane. It was carrying Li-ion batteries

[@Astinsan]

Master trim valve rusted open? Is this another covid storage gone bad?

[@deborshikashyap6745]

Either Packs stopped working or Packs are not producing cold air at the same time with hot air.. that's how temperature is maintain..air condition produce too cold and too hot at same time..

[@geminigeorge400]

Anybody know if this was Kelsey from 74gear? It kind of sounds like him.

[@adriananzano2292]

i wonder what the cause for it was?

[@dutchvcc]

I had the same last year, anti ice valve air conditioning failed in open position, departure from high airport, msa 20000, not able to switch off the bleed, it went very hot even screens went down, i pads etc. At 10000 switched off the bleed still hot. Our airplane was not equiped with an override for this so hot bleed air via the gaspers in cabin and cockpit:-)

[@beieber4life]

Yeh man flight sim 2020 can definitely be challenging sometimes

[@doverby]

Boeing 747 freighters have window-style air conditioners. Sometimes they don't work all that great, so you have to walk back into the upper deck area and kick them a few times. Often, birds and/or bee's nests fall out and then they work fine. This normally happens on taxi out or on climb out. A few of the older freighters have really old models from the 70's and 80's, made by Sears Roebuck that are on the fritz, so that's likely what they had installed on this aircraft.

[@irisfields1659]

Ac out or electronically tro

[@tibor1234]

Hi, what was the cause of the high temperature in the cockpit ?

[@YouCanSeeATC]

We don't know

[@nzkiwi9]

Try this on for size... the the problem was the master trim air valve. It failed in the open position which resulted in super heated air from the engines being blasted into the aircraft, including the cockpit. The cockpit was about 115 degree Fahrenheit. Excessive heat like this will cause cascading electrical failures.

[@robertgary3561]

@@nzkiwi9 Almost the same thing happened on a cargo flight UPS 6. All lost. Lithium batteries stored in upper cargo behind the cockpit. Generates a lot of heat, no smoke.

[@donnafromnyc]

I bet the pilots checked into the nearest airport hotel and jumped into the pool, uniforms on!

[@jameskim62]

What was the problem ????

[@davidhoffman1278]

Stuck open engine hot air bleed valve?

[@nightwaves3203]

Maybe

[@markaoslo5653]

3:07 _"...wInds are one-five-zero (150) at eight..."_ NOT " Wind is 180" as seen in your caption @You can see ATC

[@YouCanSeeATC]

Thank you for your corrections 👍

[@LeDerpLegend]

Also prior to that. The center and airline number are mixed for the dialogue.

[@robertgary3561]

A very dangerous saturation. Cargo planes have crashed from lithium battery runaways in the cargo. They don't necessarily produce smoke.

[@therealwiseguy3747]

Anyone have any info on what happened?

[@MeaHeaR]

O.M.G. thatt wazz Power-Phull

[@cmonkey63]

Well, whatever the cause, when you're hauling lithium batteries it's best to abort the flight and save the plane. Snakes on a plane? That's nothing compared to a fire on a plane.

[@DeepSingh-vo8gu]

At least they didn’t pitch down 40 degrees on this one.

[@techmonster2632]

Just 2 crew onboard impressive

[@Catzee]

Did you think the Amazon parcels get beverage service during flight?

[@juusojd]

My guess would be a faulty temperature controller.

[@kirilmihaylov1934]

Then how it will be so hot . You writing nonsense

[@juusojd]

If pack controller pushes just 30-40 degree air to the small cockpit it is bound to get hot.

[@kirilmihaylov1934]

@@juusojd this is not the reason

[@juusojd]

@@kirilmihaylov1934 Well it as just a guess based on the information available at that time.

[@st8ks967]

@@kirilmihaylov1934 someone woke up on the wrong side of happy

[@johnp139]

The cockpit, what is it?

[@valicourt]

A little room at the front of the aircraft. But that’s not important right now.

[@kylemorrison2267]

No one is talking about how this could've been Kelsey from 74gear.

[@victorbasta7359]

What were the choices for the in flight meal?

[@hamletksquid2702]

Surely you can't be serious.

[@ArmyofSeaturtles]

beef and chicken, and if your special vegetarian lol

[@ncsakany]

Your choice of captain or first officer.

[@martynh5410]

Fried eggs, prepared on the flight deck floor....

[@robertborchert932]

Steamy weenies.

[@kennyrussell2663]

Excessive heat in the cockpit can mean there is an electrical fire on board.

[@LordSStorm]

We don't really know what they were feeling. It could have been a failure of the AC/Heat system or some electrical issue,

[@kirilmihaylov1934]

Most likely yes. But this is very dangerous as it can go in full blown fire in minutes

[@ocsrc]

Can they open a window in the cockpit ?

[@YouCanSeeATC]

😄 No.

[@guyseeten2755]

Yes, when they are low and slow.

[@badkarma11b]

Cabin heat was probably on.

[@DarthD3NN15]

them pilots arent used to this heat rather than the Miami heat ;)

[@brianallyn5308]

Must have fixed the issue, 14 hours later the flight made the normal trip with no issues.

[@Shadow__133]

The next crew wasn't hot headed 😝

[@carlosguardiola7572]

Yes we did

[@agentezzard]

@@carlosguardiola7572 what was it? I work 126.32 but not that night.

[@Spyke-lz2hl]

Just declare the freaking emergency! Waiting until the downwind not only restricts time to prep, but also results in questions you may be too busy to answer by then.

[@danielrichardbond]

74 Gear?

[@Rhaman68]

All air directed into the inside of an aircraft comes from the engine. In the compressor case, a series of valves called bleed valves control/manage the hot compressed air. A series of steps directs the air thru heat exchangers. One is for cabin pressure/temperature control. Isolating that bleed valve is possible but no air for cabin pressure nor temp control. This crew did the right thing except did not declare Pan/pan/pan which sets up ATC to give attention/priority nor did not isolate the source of the hit air. US trained pilots are well known to have an aversion to use PAN and Mayday!

[@planesense7390]

as they should, Pan Pan or Mayday shouldn't be used wantonly

[@robertgary3561]

UPS 6 was a 747 and was lost in the same way. Lithium batteries in the cargo upper deck behind the pilots starting making heat and runaway.

[@SplashingLebron921]

Air conditioning pack failure that's what I'm thinking

[@mdynasty8219]

There’s two packs tho, so both of them couldn’t have failed, unless the controller failed, even then wouldn’t the air bypass in to the cockpit.

[@ArmyofSeaturtles]

@@mdynasty8219 3 packs on the 744, ill find out tomorrow at work why they turned back XD, we had a 777 one time where the mid cabin got extremely hot, trim air hose burst, deferred the pack, turned off the trim air and sent it back to home base, told the pilots to bring extra jackets.

[@mdynasty8219]

@@ArmyofSeaturtles lol, we had an apu leak on 77-2, it was blowing linings into the cabin looked a dust storm. Easiest fix, a clamp was loose in cabin but they turned back too.

[@Ozgrade3]

@@mdynasty8219 why didn't they close the bleed valves when below 10,000, that would take away the heat.

[@mdynasty8219]

@@Ozgrade3 I thought it was a malfunction with the controller, if it wasn’t operating at altitude, on the other hand, I would have assumed that they would’ve unloaded the pack as most Boeing a/c not sure about the 47, have a separate control for the cockpit and takes priority over cabins. So there could’ve been a shut off for the cabin controller or maybe that’s just the 77

[@christopherhite9050]

Likely engine blead air from one source or another. Bleed is used to melt ice on the wings, pressurize the cabin, and heat (and cool after going through an air cycle machine) the cabin among other things. if the air cycle machine malfunctions, the 500+ engine degree bleed air can feed directly into the cabin . It can become VERY hot very fast in this situation.

[@carlosguardiola7572]

Nope

[@michael931]

Obviously they never did hot yoga

[@CrucesNomad1]

Code for got the wrong starbucks order

[@billfly2186]

It's Miami. Gets pretty hot there. I have a feeling the AC was out and the pilots were pissed at the company for shoddy maintenance, so the dumped thousands of dollars of fuel and came back.

[@MrJshsedgwick]

At the altitude they were at, you need a heater. Theirs got stuck on.

[@johnthompson5741]

Did they try opening a window?? 🤨

[@YouCanSeeATC]

I guess this is the first thing in the checklist!😂

[@shreddder999]

Take off jacket?

[@jetaddicted]

Turn on the air conditioning ?

[@767driver]

B747 does not have windows to open.

[@budyeddi5814]

@@767driver Google jokes

[@stevenpayne3707]

How about not starting radio calls with “and”, “and uh”, or whatever other push-to-think phrase...

[@brandonkearns1783]

What a stupid comment... Maverik

[@stevenpayne3707]

Got it...you are also one of “those idiots” that pushes to think instead of talk. Just curious Brandon...do you do anything other than watch from the jumpseat while others fly?🤷‍♂️😊

[@sevecost4253]

Lithium batteries may be the reason of the cockpit high temperature, this batteries are very inestable

[@Kalvinjj]

Perfect choice on their part. A pilot suffering a heatstroke can't pilot a plane safely or at all.

[@se-kmg355]

When the temperature start creeping up in a confined space, it gets really uncomfortable. You feel the heat and gets heavy to breath.I do not know what the temperature was at and if they where in any immediate danger, but sitting in 30+ for hours is not pleasant.

[@Kalvinjj]

@@se-kmg355 Being Brazilian I know what that means! And sure enough, when it's like 35 Celsius on my room my head just doesn't work anymore. Far less of a problem when I'm not handling 300+ tons at hundreds of kilometers per hour in the sky tho.

[@teelo12000]

As you travel closer to the equator you should expect it to get hotter!

[@pangaea6united]

Air fryer in cockpit

[@apriliarider6072]

2 souls onboard?

[@YouCanSeeATC]

Cargo

[@mikedarren6658]

passengers were Democrats....:)

[@lsdzheeusi]

@@mikedarren6658 Please consult a mental health professional who can help you with this level of obsession.

[@mikedarren6658]

@@lsdzheeusi must be a DemocRAT

[@KennethMixson]

Open the window.

[@darrens.4322]

Hopefully they knew how to operate the environmental control system on B747. Hopefully they were not running a Weber to BBQ hot dogs and forgot about it.

[@seoceancrosser]

Why dump gas if the cabin is hot and you don’t know why? Just do an over weight landing and get off the aircraft ASAP.

[@sandrocaparelli3854]

It’s possible the avionics fans failed. Those screen can get extreme warm

[@atav]

I'd doubt that, sounds more of pack 1 controller being stuck full hot, which has happened on 737s many times. I've had a 737 pack 1 be stuck full cold and the poor pilots could barely move their hands by the time they finished the diversion. Pack 1 on most Boeings supplies the FD, so if the 744 is the same, most likely.

[@tastybunns1]

Seems like a faulty divider valve or X-Flow valve. If you tie air from the Passenger Compartment, you can regulate a temperature that is manageable in the Flight Station. Usually the Flight Station and the Cargo or Passenger compartments have separate AC packs. Either that or Bleed Air was finding its way through from the engines undetected. The temperature control panel can go to upward of 200+ deg F, so If anything kinda seems like the Pilots were too lazy to fix the problem, should not have been an IFE if preventable.

[@nzkiwi9]

Your guess is the closest I've seen in the comments yet. Master trim air valve stuck open. +115°F in the flight deck. If they had continued the flight, they would have lost all avionics

[@robertgary3561]

@@nzkiwi9 I'm going with lithium batteries in the cargo. Same thing brought down UPS 6, same symptoms. They start making heat. Upper cargo is just behind the cockpit. Exact same location as UPS 6 too.

[@aerohk]

Cockpit fire or avionics overheat

[@buckbuchanan5849]

Just put a window down 😜

[@YouCanSeeATC]

👍😂

[@samtumer1612]

U can’t open the windows on the 747’s 😂

[@buckbuchanan5849]

@@samtumer1612 You purty smart 😜😬😆😆😆

[@gwiyomikim5988]

747 has an escape hatch in the cockpit ceiling for use if regular exits are blocked. If it got unbearably hot in the cockpit maybe they could open the hatch at a low, unpressurized, altitude for ventilation. Worth a shot if the alternative is “cooking” or “crashing”.🤔

[@buckbuchanan5849]

@@gwiyomikim5988 oh no what have I started! 😆

[@sndestroy]

Lithium batteries... hhmmm...

[@juusojd]

Those get carries daily and the only reason they mentioned them was because they are hazardous material.

[@johnnystarspangle2876]

Musta been a far in there. A far is hot.

[@saxmanb777]

Hopefully not a ole far.

[@rock5464]

The far trucks didn’t see no far

[@jesse00pno]

Best comment.

[@weebgrinder]

That fuel must have landed on at least one or two marine vessels. That's pretty busy water right there. At least that's my guess.

[@andrespinzaskalinowski4457]

At 13000 ft, that fuel never made it to the ground or sea.....procedure says that fuel MUST be dump above 6000 in order to vaporized

[@tabel4844]

Nah just a case of the covid sweats

[@terryjones9784]

AC went out

[@highflyerl23]

Probably a pack failure of some sort.

[@Evan-ed7pu]

Doubt it, there’s multiple packs and the others would be able to easily cool the cockpit. Also you’d get a CAS message for that... l

[@TheRusschannel]

Ben Shapiro is an ATC at approach? lol

[@tailhookmd2546]

Even though you know it’s coming as a pilot in this situation whenever they actually ask for Souls on Board that’s always a little lump in the throat. Like shit might be gettin real.

[@donnafromnyc]

Lucky they didn't pass out.

[@nzkiwi9]

I don't presume to assume that everyone onboard had a soul

[@brianallyn5308]

Temperature was too high because pilots were cooking in the cockpit instead of flying. (just kidding)

[@MrBillUp]

Well if it was Air Conditioning failure they could have just switched it off. Also I'm sure they would have mentioned it as the probable cause. I thought nose wheel brake or tire failure, but as it's a 747, they would be too far away from the cockpit. There was no fire reported. We all know how volatile Lithium Batteries are. They took 15 minutes to dump fuel. Plenty of time for the flash point of the batteries to start a fire. None reported. The only thing I can think of is the Air Conditioning did fail, they thought they had turned it off, solving the problem, yet it didn't, and it cooked them.

[@MrBillUp]

I wonder if it had recently been fitted with a new glass cockpit suite? These are inherently hot with 100's of feet of wiring. I wonder if this overheated?

[@LordSStorm]

Is it possible an AC failure that it never did turn of.

[@MrBillUp]

@@LordSStorm Its plausible, yet I fear this isn't the case. Seems too generic a reason for it to be true lol. My best guess is it was an old airframe with a new navigation suite that overheated.

[@kirilmihaylov1934]

@@MrBillUp this is dangerous as it can start fire anytime. But it was the 🔋 that caused this is my guess .

[@ArmyofSeaturtles]

@@MrBillUp they have not i can tell you that. same glass cockpit since the 744 came out.

[@tabuti23]

lithium batteries .. = UPS 747 and Asiana Cargo 747 crash...

[@flythec152]

SAA as well

[@Dfpijgyt564s65sgt]

Lithium batteries are loaded into cargo aircraft literally every single day.

[@kirilmihaylov1934]

@@Dfpijgyt564s65sgt so what ??? They still can explode and start a fire. They had brought down 2-3 747s lately

[@Dfpijgyt564s65sgt]

Kiril Mihaylov so what is my point?...

[@malvec9013]

...and grounded the entire b787 fleet for 6 months

[@PabloGardenal]

The pilot forget his wallet in the toilet ...

[@Channel4029]

Hope you all had fun with your little jokes. As a non pilot who wanted to know the cause, the jokes confused the issue to the point that the "purpose of this video is education" became another joke. I still have no idea what happened. Thanks a lot guys.

[@andyowens5494]

Its almost certainly a problem with the environmental control system. Had it been a li-ion battery fire, its unlikely they would have got back, they would have had alarms and smoke telling them so they would have declared an emergency, and in the event they did land, all hell would have broken loose on the ground which we'd have heard about. (I must admit my heart sank when I heard they were carrying, but the rest of the interaction suggests they were not the culprit). Cockpit fires tend to either cause instruments to fail, or generate noticeable smoke, so there aren't many other options beyond the environmental systems. Also, there is no report publicly available yet, which suggests it was an issue resolved internally by Atlas, not a reportable incident.

[@nzkiwi9]

Since you are actually interested in the cause, I'll satiate your curiosity. The the problem was the master trim air valve. It failed in the open position which resulted in super heated air from the engines being blasted into the aircraft, including the cockpit. The cockpit was about 115 degree Fahrenheit. Excessive heat like this will cause cascading electrical failures along with loss of instrumentation & navigation.