What is that SPIRAL in the Jet Engine?

What is the purpose of that, funny looking, spiral in the centre of the Jet engine on modern aircraft? Why am I not allowed to walk under the wings while Boarding?
These are some of the questions that I will be answering in todays video so make sure you stay glued to the video until the end!
If you have more questions about strange procedures around aircraft, don't hesitate to ask me in the comments!
To download the FREE "Mentour Aviation" app and contact me directly, use the links below! (Tag @mentour in the chat)
📲IOS: appstore.com/mentouraviation
📲Android: play.google.com/store/apps/de...

[@Ulvetann]

Yes. This explained very well why airplane technicians never wear cape.

[@MentourPilot]

😂😂😂 Indeed

[@markholbrook7482]

@@MentourPilot Well, we've all seen The Incredibles

[@margotrosendorn6371]

NO CAPES!!!

[@butteriest1634]

incredibles is such a good movie man

[@jimjab3631]

Saw that in incredible, no capes

[@jonathanbailey1597]

That sound effect that he had when he talked about the risk of ingestion was priceless!!

[@MentourPilot]

😂

[@gworfish]

Yes, little things like that, or when the frame fills up with smoke, inject some great humour into serious topics. Two thumbs up.

[@curtchase3730]

I am not a pilot, don't know much about planes, and hardly ever fly, but I find your presentations very informative, entertaining, and the fact you use "down to earth" layman's terms! Great job there and you're a wonderful young man. Good Luck!

[@MentourPilot]

Thank you!

[@cnordegren]

He along cap Joe are the best. Not surprised both are Germans. This is the reason why both of them are very systematic yet brief in their videos.

[@jakejones5736]

I AM a pilot, and still find his videos interesting. But to clarify, I am a private pilot and haven't flown for years.

[@EleanorPeterson]

@@jayjordan9913 Oh, Jay! Do behave, you naughty boy! We're talkng about engine intakes here, so it's more about sucking than blowing. And don't get me started on thrust... ;-)

[@lawhertz9760]

@@cnordegren he isnt german? sounds swedish or norwegian as hell whislt talking english

[@ChrisZoomER]

The scream at 1:34 startled the daylights out of me!

[@chrissutton3440]

I think this pilot is bloody brillant and id love him to be my pilot... So friendly calming and nice

[@mrcappetto]

As a retired military aircraft mechanic, I can say this man is always right on the money. He would make a great instructor in addition to being a great pilot.

[@neiswestnij]

One addition, as I’ve been working as ground service for some years during my study time: we used the signal pylons under each wing tip to prevent any vehicle driving to close to the wing. The wing tip distance is easy to miscalculate, when you’re sitting in the vehicle, especially if you have low installed wings, so the signal pylon helps a lot.

[@filanfyretracker]

I think I am honestly worried for the species when someone thinks "I am going to light my Marlboro with a jet engine".

[@gworfish]

What amazes me is that it was in the age before people did stupid things to try and go viral on social media. And yes, I think you are right to worry.

[@dale116dot7]

Ted Taylor lit a Pall Mall cigarette with a nuclear bomb. Probably the most expensive cigarette lighter ever built.

[@garyfrancis6193]

What? You mean you don’t? I’ve heard smoking is bad for your health. This must be what they mean.

[@thebirdee55]

That's just cleaning the gene pool.

[@wizard_of_poz4413]

Yea right like you've never had an intrusive urge before

[@Werepie]

Best use of a wilhelm scream I've heard in years. You've just gotten another sub!

[@kevinavila9489]

1:33 that's the sound i make when i get sucked into an office meeting

[@BetterAircraftFabric]

The spiral on the Nosecone is a German Luftwaffe invention; as in service on dirt and grass airstrips the paint on propeller blade tips wears off quickly, they did not paint the blade tips but painted the propeller spinners with a variety of color-schemes, the black and white spiral being extremely common. It was called the "Kullernase". Regards from Alaska!

[@Jetmech1781]

The fuel vent thing is also why passengers don't board through rear doors during refueling. Fuel will spray quite a distance with the pressures used to refuel. (I used to work aircraft maintenance and have seen this more than once.)

[@sohambiswas]

If you have worked in aircraft mainatainance could you please share what earmuffler's / noice cancelling quipment you use to cut out the noise of the jet engines ? I would like to get one myself since i live in the approach path of a mojor busy airport with virtually no noise abatment procedures being followed.

[@emanuellandeholm5657]

I feel like you just have to appreciate the fact that there was an actual absolute mad lad who tried to light his cig from the exhaust of a jet engine! :D

[@okrajoe]

Great summary...

[@TheEgg185]

How am I supposed to light my cigarette now.

[@MentourPilot]

Mohahaha

[@TS_Mind_Swept]

With a glass of water

[@pmo764]

highly recommnd the F18 after burner, also good for cigars

[@ahmedmahay]

I loved that "sucked in" sound effect, hilarious!

[@Christin5554]

thank you so much for explaining the spiral. I sat inside a plane many times wondering what they meant. Great video.

[@pokerandphilosophy8328]

They should also paint spirals on the back of the engines so as to warn ground personnel not to get close and risk being hit by people who have been ingested from the other side.

[@artemyakushchenko5291]

the proper word would be "not to get drenched in people who have been ingested by an engine"

[@eaglegrip6879]

lol

[@pmo764]

​@@artemyakushchenko5291 incidentally also a skin irritant

[@sharoncassell9358]

That is exhaust. It blows outward.

[@MoeJae86]

I remember as a kid looking at those spirals, they were so hypnotic. It was so hard not to stare at it.

[@sanshark5171]

What a great attitude this gentleman has and so much knowledge. Thank you.

[@oliverdots]

I am always learning when I watch your video's. Even things I think I know, like the spiral on the jet intake, you explain so many reasons. Nothing is as simple as I think. Thank you for always taking the time to make and share your video's

[@georgeremington4830]

I always thought that the spirals were decoration!!!

[@Bartooc]

"Do not put your hand into a spining engine". Thanks I was about to do that.

[@jimzivny1554]

Very good explanation. I just subscribed. My son is a mechanic for Delta, I asked him about the spiral not getting as many big strikes, he said in his experience the birds don't seem to care, they love to get in the way of the planes and become skid marks.

[@regthebackyardjackofalltrades]

Lol. Yes only during daylight hours it’s effective for birds. Migrating birds at night flying their usual route for thousands of years is the flight path for planes. At night I’ve seen the worst.

[@karlsumner5594]

Thanks for the video.

[@ChuksSpotting]

Great info! thanks man! Liked & Subscribed! :)

[@MentourPilot]

Thank you! Glad you liked it!

[@danielbarber5281]

Hey Mentour, I would be interested to hear about any in-flight failures / incidents you have had in your career, and how the real life experience compared to your training. Have the failure(s) / incident(s) changed you as a pilot? Many Thanks

[@carloslvaldez7239]

Thank you sir for a concise, easy to understand explanation on safety measures regarding being in close proximity to jet aircraft. Ive always loved aircraft for as long as I can remember, & have never been afraid to be around them, running or static. Ar the risk of singing to the choir, safety measures around & in aircraft can never be over stressed. Thank you again

[@Destin65]

Former aircraft mechanic myself. We had a fuel dump accident at work one night. Was doing fuel level testing, tank pressure checks and also pressure checks on the dump masts at the wingtips. When we took over the plane from dayshift they informed us they had put most of the fuel in the plane earlier in the day doing static leak checks and repairing those as needed. The plane only needed a top-off for us to do some of the checks later in the night. We got truck hooked up, pumping fuel, after a few minutes of pumping everyone is starting to get concerned, plane appeared to be taking on more fuel than we were told it would need. Everyone was on the right wing of the plane where the fuel truck was, manning fire extinguishers, checking dump mast pressure gauge, supervising the area, etc. Supervisor calls out to one co-worker to go in the plane to verify the fuel levels in all the tanks since plane had ground power hooked up already. Crew entrance was on left side of plane. We watched as he went around the nose and suddenly starts hollering and running back waving his arms to shutdown the fuel truck operation. All the fuel the truck was pumping was going out the left wingtip unbeknownst to all of us. lol That was a long night working with the fire department and EPA representatives doing a major cleanup of several hundred gallons of fuel.

[@MentourPilot]

Yes, I have seen that happen actually.

[@giacomo3223]

Mentour Pilot great video, great explanations... I admire you!!

[@MentourPilot]

Thank you!

[@felixapps5523]

I would like to see a detailed walk around of the aircraft with you wearing a go pro on your head or something, telling us what your looking out for.

[@00000061963]

ToothyTubs I cant speak for his airline but I know where I work when pilots do a walk-around before leaving they sometimes have to do a quick security search if the planes been at the gate for more than 30 mins it would be cool to see but idk if he can

[@wcoyote5502]

It would be cool if he did a video of a walk;around inspection of the plane, discussing what to be on the lookout for.

[@DrMD-1]

Airline mechanic here. Basically pilots are looking for anything out of the ordinary: loose bolts, tire threads, FOD (foreign object debris), flight controls secured, etc...

[@squidge6853]

+Da Koynul but it would be a gopro.... so only if they look down

[@rixpix2957]

ToothyTubs Apps Yeah, Me too!

[@Uncle-Duncan-Shack]

Really enjoyed this talk whilst watching it in the cockpit of my simulator while X Plane downloads updates, It's Friday evening and I feel like some flying to wind down the week. Thanks for a super video!

[@derin111]

Loved the sound effect and hip thrust for “ingestion”….hahahaha

[@wizbang68]

Lighting a cigarette on an jet engine exhaust pipe! Wow. Sounds like Darwin natural section for some things.

[@snookysnax]

wizbang68, could make for a funny cartoon skit, with a blast of black smoke in the face of the ignoramas.

[@calvingreene90]

If I was visiting an erupting volcano despite being a non smoker I would bring a cigar just so I could say I lit my cigar on molten lava.

[@Elfnetdesigns]

Sounds more like a Colinfurze thing

[@thegeneral123]

I didn't know about the risk of being soaked in jet fuel. Learnt something new!

[@MentourPilot]

Every day you learn something new is a good day.

[@bharathkumarj1998]

thegeneral123 🤣🤣

[@hucklo]

Whaat so I shouldn't use A-1 instead of shampoo, you learn something new every day.

[@kenanfurcle786]

Happend to my dad a few years ago, walked under a wing while maintenance crew was touching to fuel tanks, my dad got showered in kerosene. He took a long (water) shower to clean it all, trashed his clothes and everything was fine

[@thegeneral123]

When I say "the risk" I mean from it being ejected from a valve on the wing during fueling. I am fully aware of how dangerous it is and how it can harm peoples skin.

[@francobarone7437]

Competent and polite.

[@centipedp4365]

A very nice and informative short movie. You are explaining the cause of the spiral on the hub very well. Finally, I know why it is there and I don't have to rack my brain anymore about this at my next airport visit or plane travel. Thank you very much!

[@kathy13volpe]

Very interesting, and SCARY!! Thanks!

[@kiritbanerjee4426]

Imagine waking up from bed just to see a huge jet engine facing you and spinning.

[@abhijitdutta5152]

That's a craziest thing in my whole life, Kirit!! Ha ha.

[@abhijitdutta5152]

Hi Kathy! Abhijit here from Kolkata,INDIA. Thanks..

[@bartekchromik3564]

Every time I hear your intro I have a feeling it's going to be "What is love?" even tho I've heard it so many times lol

[@TimPearcy]

Great video! Having worked on a carrier in the Navy I know all about being drenched in jet fuel. The jet fuel tanks are inside the freshwater tanks, for obvious reasons and yeah, when the carrier is 30 years old, there is leakage. We had lots of similar rules except occasionally you have no choice but to walk under the wings of a taxiing aircraft, but you never ever walked through the arc of a prop even when you were 100% sure the aircraft was parked.

[@DrRich-mw4hu]

I’m so glad I found this!!!! Well presented and exceptionally professionally done. Thank you 👍

[@floyd9572]

I've been soaked in automotive fluids before, so I can't imagine jet fuel being much more pleasant. I totally get the "not walking under the wing rule".

[@jordanhenshaw]

I soak myself in automotive fluid every night. (Water)

[@XPlaneMedia]

For my 15th birthday I got to be on the tarmac at TIA. We have a friend that is a head mechanic for South West. I got to stand next to the engines while they were still smoking! Ofcourse it was safe, he was smart. It was amazing.

[@chrisbrackin8822]

Rekt - YT There's still a Sun Country 737 that probably has a glove print on the exhaust tip. I was putting the chock under it and touched it and it melted my glove.

[@XPlaneMedia]

Chris Brackin Oh shit ouch lol

[@arjunnava]

Smoking is bad for health.. the next time you meet an engine, let it know XD

[@landonhibbert3660]

What's a tarmac?

[@Sindarul]

Insta subscribed. You are speaking with the confidence of a professional and it's nice to see and hear it on youtube. And investing the time to explain some things that most people are taking for granted shows passion. Respect!

[@danielrine3103]

Great and very interesting video, I worked at an airport and was a fueler, loved the job, until I got sick(stroke) and had to give it up. Thank you for sharing this video with us, it brought back some good memories for me......

[@SuperPhunThyme9]

Man you have such a professional way about all your work. I'd probably watch this just for the influence lol.

[@MentourPilot]

Glad to hear that!

[@davecrupel2817]

"Ingestion risk" Heheh. I like that Lol

[@crumb_of_nopeamine_plz]

Great video. There are so many things I wonder about when I'm at the airport. Thanks for uploading

[@formidable38]

An excellent explanation, thank you!

[@rickfeith6372]

"Being drenched in jet fuel is bad for the skin." Note to self: Avoid this in the future

[@LoneWolf-wu6yn]

It is horrible. Had a few JP-8 baths. Whatever you are wearing is trash and I found out quickly how bad it irritates my skin.

[@trucktruckin2291]

Jet fuel will get rid of head lice. So if you got lice, soak it baby.

[@gworfish]

@@LoneWolf-wu6yn Oh wow, yeah, I bet. I've had a few solvents on my hands that weren't great, but like, hands are not a shower.

[@juanzamarripa3778]

@@LoneWolf-wu6yn kerosene isnt so bad

[@MobiusKun]

Wish birds understood the importance of the spiral.

[@MentourPilot]

That would be helpful, yes.

[@regist.9407]

Lol.

[@user-pr4ww4pt1x]

wish birds understood that theyre not immortal. they like to just think we ll just no clip through them in any vehicles

[@LarryKryski]

Well explained and useful to understand. Thanks. Sometimes risks are not always obvious!

[@PriyamPodder]

Super helpful video. I always wondered what that spiral marks are whenever I board an aircraft. I got my answer. Thanks 😊

[@mathewmclean9128]

Great video! I thought that the spiral was to notify ground crew of running engines, but I didn't know about the other reasons. Thank you, Mentour Pilot! You and Captain Joe are the best and most informative pilots on KZbin!

[@techbuzzireland]

Was just about to ask about the spiral

[@MentourPilot]

And here you go!

[@wasimjaan3300]

Jim O Brien i knew it already but, i believed that a simple pointing arrow sign would be enough to determine fan direction, but wasnt satisfied..

[@bill605able]

Looks more like a swirl to me, I been there.

[@TattoosLovers]

Mentour Pilot Hi then how do i or how can i take a picture with the plane next to the plane engine ? Thank you for your help and tips lol lmfao

[@gilbertwong5829]

Jim O Brien

[@donkeydump63]

What I find most interesting about this video is that in spite of technological advances, something as simple as a spiral painted on the main shaft of a jet engine turbine can indicate whether it's safe for personnel to approach the aircraft. It reminds me of the Plimsoll line (named after the man who devised it) painted on the hulls of cargo ships as a visual indicator of the ship's maximum load capacity.

[@bubblyblondebrunette_1581]

Unfortunately people are really dumb, simple is needed over technology. When a plane lands it's really loud, everyone is wearing head gear. How is technology going to help anyone when everyone is focused on making sure the plane is going to the right gate, the right line, waiting for the engines to slow down so the plane can be blocked.. Simple is all we have.

[@tres2112]

very informative. thanks.

[@c0ldw1nd27]

For those of you asking, these rules also apply to Chuck Norris, because if he gets sucked into the engine, although that wouldn't cause him any injuries, it would be very dangerous for the aircraft.

[@MentourPilot]

Hahaha!

[@damonjackson5857]

Shaggy*

[@thomasharris3189]

Hi mentour! Great vids, look forward to them every week. Do you have/keep a calculator in the cockpit?

[@avamendez1272]

Thomas Harris we have what is known as an electronic flight bag, very useful for daily calculations and a plenitude of other functions

[@thomasharris3189]

Ava Mendez, Thank you for the insight. Posh word for an I pad 😜 do you ever wonder how we survived without screens!?

[@Fifury161]

Awesome info - thanks for sharing!

[@LandNfan]

Always good information. Jet exhaust can do a lot of damage, but it can have some surprising benefits. Back in the early 1980’s when I was still flying, we had gone out to the airport one winter’s day for a family flight from EVV to BNA. It had snowed the previous day and I was working with a broom, clearing the snow off of our 172. We were tied down right in front of the FBO, not more than about 20m from the taxiway. I looked up and saw a USAir DC-9 making his way to runway 04. As I watched, the first officer smiled and waved, then the captain did the most amazing thing. He did a little pirouette with the plane, turning 360 degrees right beside me. Before I realized what he was doing, the jet exhaust had neatly blown all the snow off my Cessna. As he finished the circle, the first officer grinned and waved again. I know he couldn’t hear me, but I waved back and shouted, “Thanks, big brother!”

[@SafwanAviation]

Great video

[@MentourPilot]

Thank you!

[@DubbleTwice]

I always thought it was for some type of hypnosis! ;)

[@Roylinns]

...*long ass sigh*

[@user-pr4ww4pt1x]

well the birds get hypnotised

[@dmutant2635]

I love this stuff!!! Good job explaining it all.

[@djexel8845]

Excellent video!! Thank you.

[@thefanification]

as previous ground crew i can verify this is true, the only real reason for the spiral was safety, and the cones and stuff was to keep anyone out of the danger zones, there were a good 3 different crews doing different things, i was doing baggage, we had the fuelers and then the caterers all at the same time so marking of areas helped keep people from getting run over

[@macrovigilance]

ha.. ha I was a A/C ground handler for a year in 2002 - no one ever mentioned the spiral in my training. Health and Safety in the early 2000s!! They did train us on the fuel dripping from the wings though!!

[@davidwallis2959]

Macro VIGILANCE you must have not been listening that day, if you remember we all went out the night before

[@Cyba_IT_NZ]

That guy casually lighting his cigarette on the exhaust nozzel was boss! Very cool

[@gulparviz]

Thank you for educating us.

[@Dalayah]

7:15 just imagine people drenched in jet fuel, trying to light their cigarettes on the jet engine...

[@1wf]

Just comes to prove that everything in aviation has a reason..

[@alangilbert-voss7379]

Thank you for that informative talk. I did not realise about the risk of fuel ejection from the vents in the wing.

[@malghawazi]

That makes sense now why the spiral in the engine is there, thanks for the explanation

[@hardrockuniversity7283]

When I went to work at an underground mine I was told "The safety manual is written in blood'.

[@jenelaina5665]

Well that'll get folks to pay attention. One would hope.

[@hardrockuniversity7283]

@@jenelaina5665 It did me.

[@joedbarrientos4189]

Hi Mentour! Did your airline company get the 737MAX? The Max is a beautiful plane. :) great vid as always! My friends said Hi from the Philippines

[@MentourPilot]

Coming next year. We are launch customers for the Max-200

[@alanv3185]

Aah a fellow pilot. I'm not a pilot... yet! Still in grade 10!

[@Stoney3K]

Does the -MAX share a type rating with the 787 and the upcoming 777 refit because they have the same flight deck configuration?

[@whiplash7400]

Stoney3K Nope, they share a type rating with the 737NG, the large screens go to waste on the 737MAX because they are used in the same layout as the older 737s, just bigger, so no electronic checklist etc.

[@whiplash7400]

Andrew Ta Yes, the MAX-200 named after it's capability to carry 200 passengers due to extra emergency exit doors. Ryanair are the launch customer

[@user-qr5gn2yz6y]

Thank you for your teachings!!!!

[@kri0001]

Great video, fun to watch! Thanks!

[@TheGooj]

When the crew turns off the engines but forgets to turn off the anti-collision lights for an odd minute or two, as they've slowed down to a near stop/complete stop. You as a ramp worker twist your mustache heavily, as you patiently wait.

[@angelumanzor3083]

I got hypnotized by the spiral and I got sucked into the jet engine...

[@wayfa13]

All Glory to Hypnotoad!

[@egutierrez3961]

That's not really a joke, The navy E-2 prop plane has hypnotized people into the blades. We were warned about working around them. The spinning blade gives off the most calming hum (hence the nickname hummers) and the blades look soft to the touch, almost daring you to reach out and touch them. It's probably more sea story than fact, but you do need to keep your guard up as they look harmless

[@marksamuelsen2750]

Angel Umanzor Wow did you exit the back of the engine as mooosh? Or just as 160 lbs of burnt toast?

[@miskatonic6210]

@@egutierrez3961 Well, Navy guys are stupid, so I guess your story is true.

[@egutierrez3961]

Haha, I'm not saying you're wrong.

[@WaynePilot]

Clearly explained! Thank you!

[@k2_tech745]

These videos are very informative and well done - Thank you and keep it up!

[@bluedog28]

This is one of the few times that my recommended page has actually recommended a video that I would be interested in. You have not only answered a question that was always in the back of my head every time I've been to an airport, but gone beyond and made me more informed about the functions of an aircraft. You've earned my subscription.

[@tallishyeti2756]

What are the scrolling numbers on the right hand thumb of the yoke on a 737

[@buddyclem7328]

Tallishyeti27 He flies the Airbus 320. There is another channel and he flies the Boeing 737, it's called Captain Joe.

[@tallishyeti2756]

Buddy Clem joe flies the a320. Mentor flies the 737

[@MentourPilot]

It’s a memory device. Some pilots use it to remember important speeds, I use it for the callsign.

[@tallishyeti2756]

Mentour Pilot thought so. Thank you!

[@Stoney3K]

So those dials are not connected to anything, they're just dummy spinning dials?

[@PaulHerndonCPA]

Ok the ingestion sound effect was quite funny!

[@rehanhaque5660]

Very informative channel thanks for uploading

[@superluminal89]

"What is that SPIRAL in the Jet Engine?" Haven't watched the video, but I'll say "to hypnotize the birds before they get sucked in?"

[@henkbarnard1553]

So much for roasting a marshmallow on my next flight .

[@MentourPilot]

Yep, will have to wait for outside the terminal.

[@ben-vf]

Great hand warming facility on the back of the engine ! Dont try without gloves lol !

[@AnanyaGupta]

Learned so much! Thanks. In going to look at the airport through a different lens on my flight tomorrow morning.

[@yohkodevilhunter8292]

Thank you. Great info!!

[@motorxrules1]

Bonus fact, the tip of the spiral is sometimes made of rubber, this is to stop ice forming, it vibrates the ice off when the main fan blades at the front of the engine start spinning .

[@MentourPilot]

Interesting.

[@egutierrez3961]

Hmmmm, there is a manifold that circles the intake lip of the engine that they pipe in hot air to heat up the intake. A sensor is inside the intake just before the blades. When that ices over, you get the caution for engine ice.

[@biohayzer]

Yes that is correct. The V2500 engine has this rubber tip on the top of the front spinner cone🤓👍🏻

[@seanli7493]

Hi Mentour, can you show us how to start up and shut down these large airliners

[@avamendez1272]

sean li can't speak for the 737 but on the Airbus, it is fadec (full authority digital engine control) controled. turned engine starting into a non event. The selector is rotated to IGN/START, the #2 engine master is placed to ON and that's basically it. the rest of the sequence proceedes without pilot intervention: 16 % ignition ON 22% starts fuel flow At 50% start valve closes, ignition off Engine idle should stabilize at about 58% ENG mode selector to NORM Normal Idle Approx. 20% N1, 400C EGT, 60% N2, 600 lbs/hr FF.

[@peachworks_en]

I don't SPECIFICALLY know the startup procedure of the 737 (by airline checklist), but from my flight sim experience (which doesn't base my knowledge) here are the basic steps: 1. Connect to external power or startup the battery 2. Turn on the APU 3. Once APU is on you can open fuel pumps 4. Turn on hydraulic pumps as well 5. Turn the left engine start switch to the start pos. and wait till 23% N2, then put fuel cutoff on idle 6. Turn the start switch back to ground 7. Repeat steps 5 and 6 for the right engine 8. Before reaching the runway you need to turn off the APU to save fuel Correct me if I'm wrong in any of the steps above.

[@avamendez1272]

Captain Turnipage if you have the mentour aviation app (and you should) go into the chat, there is one 737 pilot there "pilotrob" who can answer that question. I am only typed on the A320

[@Muhamed662]

Very informative indeed. Thank you

[@gustavosantos106]

I don't know why I'm so addicted to this videos. They're very interesting and informative, and makes me want to become pilot!

[@williamcolt1073]

you know until you mentioned fuel vents, I was like yeah I guess its a good idea. then my immediate thought was uhgggg. jet A.

[@BatBellyAviation]

But some planes don’t have it. I’ve seen GEnx, RB211, and PW engines without any markings on the spinner. Why don’t they have them?

[@MentourPilot]

It’s up to the airlines and the engine manufacturers if they want then. It’s not mandatory.

[@BatBellyAviation]

Oh, ok. Thanks for clarifying that.

[@emercycrite]

Mentour Pilot It should be! If only for the benefit of us plane watchers 😛

[@Frank-qs5tb]

Thanks! I always wondered what that spiral thingy was.

[@sahunc]

Nicely explained. Thank you

[@axio1208]

Great video mentour, but I noticed some of the 787 engines don’t have spirals. Why is that?

[@MentourPilot]

Different philosophies from different manufacturers. It’s not mandatory so it’s up to the manufacturers and the airlines.

[@algrayson8965]

No one has been sucked into one yet. Why waste money fixing a non-existent problem?

[@diamondgamer2.021]

The manufacturers want the ground personnel to have some common sense

[@mikezerker6925]

The spiral is also used to hypnotize ground crew

[@TheNiteNinja19]

I like the format of these videos because they're explained by someone who knows what they're talking about as well as experienced. You can't learn these things just from textbooks and classrooms.

[@dmrxy.]

We love your intro