Airbus A320 PTU noise during take off from Austin to Orlando

JetBlue Airbus A320 departing from Austin Bergstrom to Orlando International Airport with continuous PTU (Power Transfer Unit) noise
Flight Info
Departure: Austin Bergstrom Airport AUS
Arrival: Orlando International MCO
Dep Time: 12:59Pm
Arr Time: 4:32Pm
Seat #: 15F
Aircraft: Airbus A320

[@even___]

My friends: What genre of music do you like? Me: *jet noise*

[@boeing_RBLX]

You mean, music then...

[@pilot5a27]

it souds so frickin good

[@cwilliams6884]

the first time I flew on an airbus i almost shit myself when i heard that noise

[@Napoleon_Blownapart]

ha, no shit. it sounds something is wrong with the plane. i remember thinking "huh, is nobody going to to anything about that noise before takeoff?"

[@ryyyan4795]

C Williams i was confused on my second time flying on an A320 when it kept going even after pushback leaving MCO. Single engine taxi, most likely.

[@Kikerfit]

I thought it was the engines starting

[@ayafi9932]

ATC: Cleared for takeoff Captain: Cleared for takeoff V1 FO: Rotate FO: We forgot the PTU Capt

[@cap3586]

A Yafi PTU is very important.

[@alybhamani7933]

@@cap3586 what does a PTU do?

[@silwerston]

@@alybhamani7933 PTU generates this noise. Its a kind of pump between Yelow and Green hydaulic system, which equalizes pressure between them.

[@fernandalbm590]

😂😂😂

[@hotshot4512]

I bet half the people absolutely shat themselves when the landing gear ptu sound began

[@windshearahead7012]

HotShot LMAOO

[@hotshot4512]

@Ryland Brough KEKW

[@twinstarzeonx]

HotShot I know I bloody would 😂😱

[@echothefreak9396]

“is someone sawing the wings off??”

[@kristita_888]

I can’t fly anymore due to a vestibular disorder, so I have never flown on an Airbus. I just discovered the dog bark tonight and have been watching videos and cracking up. God, I miss flying. Thanks for filming this beautiful takeoff!

[@visionist7]

It's funny because I've been flying on A319s for so long now that the bark becomes normal. I even assumed all planes barked but just the 320 series lol

[@garrettlods6537]

@@visionist7 i have flown 737s all my life and the ptu barking catches me off guard

[@troshs]

Been doing that myself....my god it's so funny!

[@fx-studio]

I am in love with the "barking dog" I may have to buy one.

[@Andy1076]

"Who let the PTU fly woo woo woo woof woof! Who let the PTU fly! woo woo woo woo woof woof!"

[@endysagita2107]

😂😂😂

[@kotsaris87]

😂😂😂😂😂😂 brilliant

[@hotshot4512]

Let me clear this up to people that don't understand. The PTU activates when one of the three hydraulic systems on the a320 have a difference of 500 psi than the others. The ptu kicks in. I'm not too sure why it lasted for so long after the gear came up, but it's totally normal for it to sound during the gear coming up or down as gear and flaps really strain the hydraulic systems.

[@noobnugget-zp2cd]

I think it only equalizes green and yellow, hydraulic system blue all alone, but yes the PTU does activate after the plane notices minimum difference of 500 psi from its original 3000 psi

[@hotshot4512]

@@noobnugget-zp2cd sorry late response, but you are right, at the time i didnt know the blue system was not related to the ptu

[@LensofJem]

Yessss... I came here for 1:04 😂. Nice video !

[@jamalwilliams6845]

Thanks bro for the time cuz I’ve been skipping

[@vinaypanchal9970]

Airbus was singing happy birthday all the time 🤣

[@Coldstreamer17]

Although I've only flown on Jet blue about 6 times, I've LOVED everytime. Not necessarily always the best weather, but good pilots and staff, also Free wifi!

[@YULspotter]

Ah the classic "Barking Dog" sound of the PTU on the A320 series. It comes on to top up the hydraulic pressure in the system. It tends to be heard at times of higher demand on the hydraulic system such as engine start, flaps deployment and landing gear retraction.

[@taxiviaalfa]

I've actually heard it on engine shutdown

[@blumac9801]

@@taxiviaalfa it comes on during shutdown only during a single engine taxi. That’s because only 2 (green & blue) of the 3 hydraulic systems are running on the #1 engine. The power transfer unit will attempt to keep the third hydraulic system powered by transferring power from the #1 engine green system to the #2 engine yellow system. This only occurs when the yellow electric pump is switched off before shutdown of engine 1.

[@blumac9801]

Engine startup does not demand high hydraulic power. The PTU only runs during engine start up as a test to ensure hydraulic power can be transferred between green/yellow in the event of emergency hydraulic loss (such as a single engine failure). The PTU will only run in the event of lowered hydraulic pressure from one system which flap deployment/retraction, gear movement _doesn’t_ normally lead to.

[@FPC588]

Ive never heard it going on for so long after takeoff. It nornally stops after the gear comes up

[@jetway756]

Must've been a bad hydraulic fault, because I've never heard a PTU activate that often in one flight. Funny to know the A320 was singing Happy Birthday 😝.

[@Kayshots]

nope, its normal. if it was faulty this video wouldn't've been on here

[@hades_monsta]

@@Kayshots why is it normal, the PTU shouldn't be active when everything is alright

[@exoticcar5482]

I'm confused myself. Normally when you hear the PTU while taxiing, it's because the captain is taxiing on one engine to save fuel, but by the time they begin takeoff, both engines will be running and be able to keep the pressure equal

[@flightlevel3608]

@@hades_monsta Kay is right. Sometimes the PTU aids in gear and flap operation during flight. Equipment like this requires a lot of hydraulic pressure so the PTU helps fill the drop in pressure.

[@Coldstreamer17]

Never heard that much PTU, also never heard it that far up in the air, that hydraulic system just didn't want to equalize did it?

[@glorysdejesus9651]

7:50 oh hell no someone got a shit attack there

[@opalb9006]

*Happy birthday elizabeth*

[@Voyager.2]

I love the A32X.

[@guitarsarelikestupid7200]

The dog is in the cockpit and gets mad if the power levers are pulled to idle.

[@rifqiathallah2046]

7:45 I think the PTU is crying after the aircraft rotating...

[@jesusgutierrez4581]

At 7:45 it’s not the PTU. That’s the sound of the gear coming up and it still sounds like the PTU because the flaps are down but it stops when the flaps are up

[@hotshot4512]

@@jesusgutierrez4581 no, at 7:45 it's definitely the ptu. It just means the system is lower pressure in one of the hydraulic systems than another. This is normal and triggered by the gear since it's one of the biggest hydraulic system loads along with flaps. I hear it on gear up like every other flight on the a320 I'd say

[@gergodeak4432]

@James Jones PTU is automatically turns on when senses pressure drop below 2500 psi in the green on the yellow system. Some movements like pulling the gear up or the flaps needs a lot of pressure therefore the pressure starts feeding than dropping down then the ptu kicks in to equalize it

[@videogameplayer0552]

@@jesusgutierrez4581, Landing gear doesn’t sound like that. It’s the sound of the PTU, which transfers hydraulic power from one hydraulics system to the other.

[@viarnay]

damn! I convinced my nephew that there was a dog on the cargo bay barking

[@ezan3363]

Now Thats An Angry PTU

[@codingvio7383]

3:01 How do you know a pilot is in the room? "He will tell you"

[@nigarugamingHvH]

I heard PTU when the plane just climbed to cruising altitude for a moment I thought my plane was going 737 max 9/11 mode (not that funny cuz I was flying trough NY)

[@norbert1636]

Must have been. Airbus uses PTU to adjust the pressure on the ground during engine 2 start up (engine 3 in A340), Boeings after take-off

[@conorsmyth9963]

norbert1636 The PTU is used anytime the pressure in one of the systems is significantly lower than the other (500psi lower).

[@norbert1636]

@@conorsmyth9963 500psi is minimum for PTU to activate after EDP as redundant but what happens if there is a leak and ECAM shows half of required 3000psi on either green or yellow? Do you have A320 QRH? ;)

[@aviay]

not funny

[@another_doge]

Today has a flight on A321, was scared as fuck at moment like this 7:44

[@flyNKjets]

Seems like the green system pump can’t meet demand causing the PTU to operate on gear and flap retract.

[@cr_macca]

I swear I hear @Captain Joe 2:52

[@justanaturalcarguy4031]

I agree yeah

[@BenREDCZ]

:D :D nope

[@comically_largesponge]

4:04 PREPARE FOR TAKEOFF 4:10 Wait what this is not a runway 7:02 Ahh finally Lol

[@eddomb]

Nice video!!! Sounds nice the start engines!!

[@jhoannanadela8151]

best sound ever

[@starlightglimmernguyen8584]

PTU sounds like a robot

[@ryanb5479]

Love hearing the PTU but never heard it this much. United's Airbuses do it briefly then stop

[@MrDenisoyd.]

i miss flying i havent flown since 2019 :(

[@HollywoodRoseJack]

Sooo Quiet. =)) Luck you to be in a plane on a beautiful clear day. Enjoy.

[@davincy369Zois]

I heard that after takeoff I tough one engine stopped

[@JNTHN-hp9fr]

I heard this noise always on airbus a320s

[@TheQatinChannel]

320 saw a 737 nearby

[@rodrigopanda231]

Good

[@ryankim7399]

I remember the PTU sound during landing procedure. Is that possible or is it other hydraulic equipment’s sound like landing gears? I am so lost right now.

[@akmedia8206]

I think they forgot to turn on the engine

[@maxm7012]

@Ryan Kim actually I think it cannot be anything apart of the TPU because the landing gear doesn't make this sound, and could be also possible that what you heard is the PTU since its role it's equalizing the pressure in the hydraulic fluid in every of the three hydraulic systems of the airplane

[@ryankim7399]

Max M Oh ok Thank you

[@MCPilot1201]

@@maxm7012 it equalises the green and yellow engine driven systems.

[@hotshot4512]

It's definitely possible - the pilot might have lowered hear and went flaps 3 at the same time which causes huge hydraulic load

[@flieryta]

Ptu sounds better thamn hostes sound 😂

[@mickforster1]

Looks more than 20knts taxi - yeha! :)

[@manuelrivera6632]

How do you activate the PTU?

[@manuelrivera6632]

@KiloB24 ammmm but where is it

[@RefrigeratedWaffles2]

M Rivera most likely on the overhead panel or on the pedestal

[@captainmonster1829]

@@manuelrivera6632 you can activate it by starting left engine. But, you must got right engine running. When your starting left engine, PTU barks. PTU is an Power Transfer Unit. Why am I saying it? Because you need to know something about it. PTU transfers hydraulics throught right engine to left. Airbus A320 has 3 hydraulics systems: Left engine: Green Electric middle: Blue Right engine: Yellow The PTU is installed next to the Yellow hydraulics system. The Yellow hydraulics system transfers it's hydraulics throught PTU to Green hydraulics. In case of left engine failure, the PTU will power the Green hydraulics system. Each hydraulics system powers system such as tail elevator, wings, ailerons, flaps, slats, gear etc. That's it! Check internet for some more info!

[@captainmonster1829]

@@RefrigeratedWaffles2 Nope, it's on the Hydraulics panel on the overhead panel

[@elliotwhitworth8239]

It activates itself automatically

[@the_brick_bali9956]

Supercharger for an airplane

[@Lite-hl8lx]

Ah-ah-ah-ah

[@focks703]

and my dad said it was the rudder lol

[@thatromanianguy99]

I have a question. Whenever I board a plane, I always hear a hum through the cabin. I don't think it is the engines since they don't turn on until the doors are shut, right? Is it the plane's hydraulic system humming? I hope someone understands what I'm talking about lol.

[@kristita_888]

I think you might be hearing the APU (auxiliary power unit). 😊

[@hotshot4512]

It's a lot of things that hum on the plane - there are cabin fans, avionics fans, air conditioning packs, but the most likely one you're talking about is the fuel pumps which are loudest over the wings and emit that hum noise

[@flightlevel3608]

Different planes have different sounds you may hear in the cabin. It can be the fuel pumps, the APU bleed providing cabin air, or even the hydraulic system, which pilots don't typically run while parked.

[@HoLeeChit11]

Oh that was probably my girlfriend you heard humming after we locked ourselves in the toilets for 5 minutes

[@Hopeless_and_Forlorn]

If you hear the sound stop when the airplane is at a reasonably high altitude and you have cell phone reception, you may have time to tell your mommy goodbye.

[@Aviation4_350]

That’s the landing gear retracting

[@TheLatiosnlatias02]

7:49 was it the sound of the flaps when retracting

[@wiktoriakiet4196]

No

[@BehindMyVisor]

they literally just lifted off. How would it be the flaps retracting?

[@BehindMyVisor]

Oral Jibbies I know its not..

[@hammerheadorangutan9671]

@@BehindMyVisor oh oof i read ur question wrong sorry ill delete my reply

[@blueguycommenteryt7054]

its not moving so its ptu

[@spicytakis]

There was a squirrel on takeoff

[@jkartio5374]

What is the noise at 2:40?

[@julius5895]

It's called PTU

[@jesusgutierrez4581]

That’s not the PTU! The PTU is the one at 1:05 since the engine 2 is being started! The sound at 2:45 is the Hydraulic System which sounds like the PTU as the flaps or gear are coming up or down

[@exoticcar5482]

​@@jesusgutierrez4581 Stop spreading misinformation. It is most definitely the PTU working harder than normal to feed the hydraulics while the landing gear is retracting

[@SimbaC2007]

You said you were a pilot are you an Airliner pilot or a PPL pilot?

[@TheAviator121296]

Nahh, not an airline pilot

[@SimbaC2007]

@@TheAviator121296 Oh In the video someone said I'm a pilot.

[@TheAviator121296]

@@SimbaC2007 it was me. I'm a pilot but I fly the cessna 172

[@kevpalm82]

TheAviator lol so your the person to show a c-130 and say “that’s a c-130 I fly a c-150

[@windshearahead7012]

Kevin Palmer HAHAHAHAHAHHAHHAHAHAHAHAHAHAHHAAHHAHAHAHAH

[@arrex3raviation8975]

PTU Can Be Heared at 4:50 and 7:47 it's because it has lack of Power Transfer in The Plane so the Pilots Activate The PTU Long Time

[@blumac9801]

Aero Aviation it’s the plane trying to pressurize the Yellow Hydraulic system.

[@CrazyForCooCooPuffs]

Pilots don't control the PTU, its automatic.

[@shahimagesyt]

And 2:33, 3:33, 6:33

[@m_swizzy22]

They must have been in a real rush getting out, fighting slots I guess, I know for a fact that some airlines that choose to taxi with one engine get the PTU running the moment they shut down the appropriate engine, saves fuel, most importantly 😂 Ryanair use 737s, so no barking dog, but, due to the fact I’ve worked at an airport where we only got A320s, and 737s, an occasional A321, and 757, I see those Ryanair’s taxi on one engine, Aer Lingus tends to not shut down any engine in taxi( they take extra fuel anyway, not like Ryanair with their minimal fuel for journey thing)

[@meteoroyque]

@@glenjoseph4144 PTU operation is automatic, the switch position on the overhead is either auto or off. It will activate automatically if there is a loss of pressure in one of the hydraulics.

[@juiceski30]

I would yell out "were on fire" and watch the delicious panic.

[@julius5895]

Delicious panic????

[@Scott-vg3lz]

And that’s why you’d get put on the no fly list

[@exoticcar5482]

I hope you never step foot on a flight

[@iliayan1982]

Гаф

[@Unknown12313]

400 likes

[@Unknown12313]

100 Likes

[@akkimayal1458]

Weeeeeeeeeeee weee weee wee wee wee wee wee wee

[@vagneralencardeornelas1664]

Uunbearable annoying noise from PTU. Airbus "Dog" singing happy birthday toguether.

[@cofepaper9484]

Cringe 2:12

[@TheAviator121296]

Lool 😂😂😂 I'm trying to get to Florida and here we have a flight attendant trying to sing

[@captainmonster1829]

@@TheAviator121296 2:22 rip speakers. Her voice is too bad for Airbus speakers💯👌

[@giggal5262]

what the fuck was cringy about that? :o

[@alessandrovisconi1079]

My gosh I was concentrating so much on the engines sound that it scared the shit out of me, like wtf

[@blueguycommenteryt7054]

remember this is not about you. - J M

[@yecto1332]

That cringe birthday wish omgosh

[@AirTravel415]

That was Actually the landing gear not the PTU

[@TheAviator121296]

You're wrong, it is in fact the power transfer unit

[@liam_dory]

Air Travel 415 You are the big dumb

[@marcosundah4698]

Oh wow ldg doesn’t sound like that

[@marcosundah4698]

Obv its the PTU

[@AirTravel415]

I meant the PTU LIKE sound and whine before the ding 7:50