Sounds are probably APU and hydrolics to power the flaps

@AVIATION SUBSCRIBER CHALLENGE yes I messed up the spelling a bit😄

I appreciate it, actually one of my favourite characteristics of the 787 family. Phenomenal bird!

I agree. this is why I usually book over the wing if flying a 787

i love the hydraulic sound. Just like the famous barking dog from the A320 series

I have flown on them and I gotta agree. Gotta love the hydraulic pump startup

Ikr, i love it aswell

@MrderpyShark 21 Exactly, plus it sounds cool and is unique unlike the other quieter newer aircraft out.

I love it as well lol

The sound IS bitchin 💙✈️ God that thing is so advanced, love that Dreamliner. It’s the future, accompanied by the A350. New leaders in the sky ahead.

Your a good person

You are RIGHT, the 787 is not boring at all, and you are also right that newer things are more boring.

Yeah it’s much cooler than the “barking” or sawing hydraulic noise on the A320. The 787’s hydraulic sound is really cool

777-300er has a better startup sound imo though

What's that

Apu

Hydraulic

@@mjt777x8 hydraulic sounds

goosebumps every time

Those are flaps lol

@@cabbage9440 Hydraulic pumps

@@cabbage9440 srry flaps dont move thats the a380 boeing copied them see its not moving

@@cabbage9440 hydraulics

Those are hydraulic pumps

Ditto 😂

Totally agree with you. If only someone could make an 8 or 10 hour version of the hydraulic sound

@@JohnAckerman93 no capp ill listen everyday 😂

Low Rpm start of the engines. whennu hear the low rumble it's fuel being fed into the engine

Big M can't remember off the top of my head. it was a crew training flight so i had a free run of the aircraft. will let you know when i can.

TheFlyingSpanner1 yep thank you

The GEnx sounds like a GE90 startup

No

Nope they would be doing single engine taxi.

standard procedure on the 787. unlike all other engines of this size it has electric starters, not air. so they can start both at the same time

But it’s a Beautiful sound

@@Kavilion_ Those noise sound wonderful when you’re awake and eager to travel. However when you suffer from jet lags and couldn’t sleep thanks to 787 narrow seats, those noise are nothing more than nuisance.

@@Chris58851 true

@@Chris58851 well that are the results of been a peasant. Even though if the 787 was 2-4-2 as it was made, economy would always be down of comfy

GEnX

Yeah but it has only a white noise but it supposes to be a roaring noise

More like 852Hz actually. Depends on how fast the demand pumps spin

that was the hydraulic noise, not the flap noise

@@hantus7523 yep

+전현서 Hydraulic pumps. & GEnX-1B

these are GEnX-1B64's

I call it the “Federal Signal Modulator/DSA with an MC controller” below the cabin floor lmfao

@@SirensAndAlarmsOfNorthernIL yes it sounds exactly like a modulator but the (single tone) one

@@Pkmn_mlp_sonic_fnaf_fan it sounds more like a synth of it rather than the real thing, and the sound is more like 852Hz instead of 850Hz like a Federal Signal MC controller

Its alot more quieter towards the front, and rear, but its only these couple of rows that are this noisy (they're directly over the centre system hydraulic pumps) so a few rows forwards of these seats, the noise isnt that bad.

TheFlyingSpanner1 thank you, that is helpful, I really wish most iarlines (like ANA) made the seat choices not so narrow and poor seat width...also quieter in this area like 777,767,a330,a340 etc. On Air Canada, if given a choice, their 777 2 cabin config is 18.5 width and 32 inch seat pitch, compared to their new 787 of 17 width, 31 seat pitch hopefully if sitting in middle of wing instead of where your seat was (which is where I would have choose), will make a difference?

+Saud Al-Faisal Siddiqui the transformers are heard at the beginning of the video and then after startup there are center hydraulic system electric pumps which sound horrible.

That whining noise is only there when there is a lot of demand for hydraulic pressure, such as during takeoff and landing, when gear is moving, flaps, large control surface inputs are all happening at the same time. Otherwise the pump is at idle, and the noise it not noticeable.

Well, at least in other aircraft it's less audible. One exception being the a320, but that sound is sorta enjoyable..

SlappingMachine 121 True, but, the Hydraulics in the 787, along with the A380 (not sure about the 350) is a 5000psi system, a320 is 3000psi.

Yeah, creepy flap noise. Sounds like a howling wolf D.

I swear i replied to most of the questions lol. as i mentioned to a user above. That whining noise is only there when there is a lot of demand for hydraulic pressure, such as during takeoff and landing, when gear is moving, flaps, large control surface inputs are all happening at the same time. Otherwise the pump is at idle, and the noise it not noticeable.

@@TheFlyingSpanner1 in fact the demand pumps are set to Auto by the pilots, the Demand pumps Only kick in when: - prior to Flap extension and to hold both the flaps and slats extended - landing gear Actuation ( Extension and retraction) - Brakes ( Autobrake and manual braking) Normally the Engine Driven Hydraulic Pumps and the main Electric Pumps of the Centre Hydraulic system, supply full system pressure to : - Ailerons - Rudder - Elevators - Roll Control Spoilers ( close to the Ailerons) - Autopilot system - Thrust Reverser System - Antiskid - Nose wheel steering system The Demand pumps provide additional pressure to : - Flaps and Slats - Manual Braking - Landing Gear Actuation System - Main Landing Gear Steering system - Flight Spoilers - Ground Spoilers ( all spoilers when the Main Landing Gears touch down upon landing) - Act as backup incase Engine Driven pumps become inoperative ,this is to backup the hydraulic systems ( Left and Right systems). - the demand pumps of the centre system are also used as backup pumps should the main Electric Pumps fail.