What happened when SQ321 hit turbulence, according to flight data
Using flight data, investigators reconstructed what happened on Singapore Airlines flight SQ321 when it hit severe turbulence over the south of Myanmar on the way from London to Singapore on May 21. A passenger died and dozens more were injured, resulting in an emergency diversion of the plane to Bangkok.
Details: cna.asia/3R44ea5
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Пікірлер: 173
Within 16 mins the pilots managed to divert and start descending to Bangkok. And by the time they landed all was ready for the emergency. This speedy coordination surely is only made possible by existing relationships between countries, airlines, airports, public services, and international protocols. Great job, all who were involved and all who prepared for these kinds of situations.
I always buckle up even if i’m eating or just stationary. I only remove my seat belt when i need to go to the toilet…
@Phoenix_Eclipse249
23 күн бұрын
@@skyflyer4231no,Who said that?
Well done to all air and cabin crews.. We all know It's not an easy handled situation.. And may those who are still hospitalised have a full and speedy recovery.. Stay well and safe always..
@LonganLee
Ай бұрын
They could have done better had they knowing the real risks of more frequent turbulence and the region, to enforce the belting up stricter. Its due diligence
@CatAndRain-kn6lv
Ай бұрын
@@LonganLee well.... there is a safety briefing at the start of every flight which talks about buckling up the seat belts so the people who did not do that probably did not care...
@LonganLee
Ай бұрын
@@CatAndRain-kn6lv drivers also learnt and passed driving test and many break the rules, big or small. So that's why there are enforcements and enforcers. In this case, the crew
A small detail for the animators, but a big detail for aviation enthusiasts. The Singapore Airlines B777-300ER involved in this incident had a special Star Alliance livery and not the usual Singapore Airlines livery.
@SimulationAviator
Ай бұрын
Taxied past the exact plane involved a few days ago in Singapore 😬 Didn’t realize until I re-watched my footage 😮 I believe it’s been relocated to WSSS until it can have its interior repaired and is ready to be put back in service. Thanks for stating this key detail 😅
The entire cabin crew and pilots need to be given a hero’s welcome. The pilots have done extremely well under extreme pressure. Well done🫡🫡. For the passengers injured during this flight, speedy recovery. God bless.
@anguslee5185
25 күн бұрын
As a retired pilot, I can tell you. It’s either the pilot or SG fault. They shouldn’t fly anywhere close to those CBs/weather cells in the first place
@sgholidae
12 күн бұрын
Hero? Somebody died and few are having severe/permanent injuries. Be objective, nobody should be overly jubilant over this. Court case may happen after investigation.
The pilots flew into the top of an imbedded thunderstorm through incompetence. They failed to accurately interrogate the weather returns with their radar. As an active international Airline Captain with 30 years in command of Heavies and Supers, your primary job is to avoid storms. Don’t expect an open and honest investigation.
@theflyingrealestateagent2828
Ай бұрын
Hmmm. Was wondering about this? Would certainly explain the turbulence. Do you know this or are surmising?
@GeeBeeMike
Ай бұрын
Agreed. The radar trace paints a completely different picture. Seen plenty of Singapore Airlines flights plough headlong into convective CB’s in my time. This was a case of gross negligence. Nothing less. Any other company would have sacked the pilots.
@scousedavies565
Ай бұрын
And another "Hmmm" from me. I looked back at the data, using ADSB and the first instance I recorded was at 08:06:42 Z, not the 07:49 shown on the video. The first change in altitude was at 08:07:07 to 36,925ft with a descent rate of 512ft/min. Note the FMS altitude select was changed from 36,992ft to 31,008ft at 08:06:57. So the descent began after a change in the FMS Alt Select. At 08:07:41, rate of descent had gradually increased to 2,880ft/min. That is almost a full minute after the initial "upset". After this, there was an approx 2 minute period when the rate of descent was steady at 1,920 ft/min. The change from -2,880ft/min to 1,920 ft/min was gradual, certainly not the hard bump you get when a plane suddenly stops falling. (A feeling I know only too well from regular 747 flights from Bahrain to Hong Kong, in the area north of this). I would magine someone should be asking for an explanation re the switch from 37,000ft to 31,000ft. The flight was not intneding to go to BKK at this time so perhaps a little too soon for an approach to Singapore. Also interesting is the declaratioin of an emergency, the Squawk was changed from the cruise squawk 5123 to 7700 only when passing 23,000 ft and 115 miles from Bangkok.
@NoNo-yu3zy
29 күн бұрын
@@GeeBeeMikeso this could have been completely avoided? I’d love to know since I have a flight this Sunday and this disturbs me deeply. Thinking that it is completely out of their control.
It’s not the airline’s fault for accidents The seatbelt sign was turned on!
@LonganLee
Ай бұрын
Stricter belting up policy needed
@mamamememoo
Ай бұрын
Not only that people are usually advised to always keep the belts on at all times unless going to the bathroom.
@Vivirhermosamenente
Ай бұрын
Ever since the incident, I can also see that it’s a sign of warning to passengers on board to abide their safety. And lesser (not totally) travellers unbuckle their seat belts only after announcement. Which is great in a way.
@noelkwek
Ай бұрын
This I agree with you! Actually, even as a child with little knowledge of air travel safety rules while flying with my parents, my father and mother used to warn me to put on the seatbelts while seated in the airplane for our family trips, unless we needed to unbuckle so as to walk out of our seats and squeeze along the narrow aisle to get to and fro the toilets in the airplane.@@mamamememoo
@Carlos1116
Ай бұрын
I don't think it is the airline's fault but there are only 8 seconds between the seatbelt sign-on and the drop. I could imagine those are in lavatory or walking back to the seat from the lavatory not having enough time to react.
If the seat belt sign was on, the unbelted passengers need to take some personal responsibility. Do we need the constant beeping on unbelted seats?
Those who likes to travel also must take risks no matter what mode of travel, that's the meaning of travel of course.
@REC_CER
Ай бұрын
That's why seat belts are important. Even when on the roads. Seat belts saves lives.
It's just a split second but the impact was extraordinary inside
Thank you Thailand for the speedy response.
Hitting the ceiling must have been painful...😮
That’s why i always wear seatbelts 💺 throughout the flight, because you’ll never know when turbulence hits. Applause 👏🏻 for the pilot to stabilize the condition
Seriously, who doesn't wear seatbelts the entire time they're on the plane? This isn't the 1950s anymore.
@TB-zt6hs
Ай бұрын
There are many that just remove their belts once the sign goes off...Never take safety for granted.
@peppergirlrocks
Ай бұрын
A lot of people. Most people have this mindset of 'it's never going to happen to me'.
@nicholasp.997
Ай бұрын
To be fair, sometimes you may not be on your seat because the sign was off and you had to go to the washroom. Sometimes people line up to go to the washroom too, because it's too busy. There are many scenarios where even a diligent person may not be wearing it, it were just a few seconds from sign being back on to the intense turbulence.
Why this airlines getting so stingy that they provide only 777 plane for long routes? If they used jumbo a380 in the first place, turbulence could be minimized and no injuries nor dead at all.
I've flown countless number of flights in my life. Surprisingly, I also experienced some of my worst turbulence in this area when I flew from Singapore to Myanmar! It was a on a Jetstar flight and I've never been on a plane that bucked up and down that much. I remember looking outside the window and I could see dark/thick thunder clouds!
Thanks for this . The livery was Star Alliance.
Until this incident, nobody believe any turbulence will involve so some pretend to belt for their comfort. Rather than the turbulence, I witnessed a sudden dead brake for the parking which resulted head injury from the hit.
Great coverage❤❤
But passengers say the seat belt was not turned on
@mamamememoo
Ай бұрын
The black box doesn’t lie though and there were many who said it came on but most of them didn’t have time to put the belts on. Others were asleep and oblivious.
Funny how the sensationalist brigade said it dropped 6000ft approx when it was first news. The actual facts are always so much less dramatic, but surprisingly a small change in G force can cause unsecured persons or items to be severely dislodged.
Omg .thanks
Was it CAT or sneaked into CN cloud? Need to clarify!
@sv8454
Ай бұрын
that’s it , SIA should clarify first , just ask the pilots !
@philipsuen1669
Ай бұрын
@@sv8454 👍weather radar onboard should tell!
The rapid changes in G-forces is a RESULT of falling and rising rapidly in a short time. The g-forces are not the CAUSE of the falling. The animation is very roughly correct but the text is poorly written. Within the 4.6s the plane rose, fell sharply and rose sharply again as animated. This would be like going through an invisible tornado in which the walls of the tornado would have massive air pressure differences compared to the center. No amount of pilot intervention would be able to overcome it.
Must have been so deathly terrifying on board 😖 definitely an experience not to repeat 😖 I saw pictures and videos of cabin crews and passengers being injured .. I'm waiting for the investigation to come out. I wanna know if it's weather like everyone says, or if it's Boeing factor ..
@martinluke9470
Ай бұрын
Didn't know Boeing was in the air turbulence manufacturing business.
@ash_mash7602
Ай бұрын
Indescribably silly speculation!
@elll2184
24 күн бұрын
If its boeing i aint going
@user-jd8sq3jp2e
23 сағат бұрын
Hello dear how are you doing today?
@elll2184
9 сағат бұрын
@@martinluke9470 if its boeing i aint going
This is why you keep your selt belt fastened
So there were only slight vibrations, not a "severe turbulence" that the plane responded to with climbing 110 metres.
@ukmaxi
Ай бұрын
The slight vibrations will be from an updraft of rising air (caused by convecting air) pushing the aircraft upwards; inside the cabin this will be felt as very minor turbulence. After the aircraft passes through the area of convecting air it suddenly drops. This marries with what passengers said; it was relatively calm and the turbulence was sudden.
@cookingwithfluffytiny4371
Ай бұрын
Agree to your observation, why did it climb? Thinking food was serving going up higher, but the fell?
@elll2184
24 күн бұрын
Said the experienced pilot. Oh wait.
Life insurers worldwide will use all these analysis determined accurately from the Flight Data Recorder and Cockpit Voice Recorder of Flight SQ 321 by the Ministry of Transport, TSIB, NSTB, Boeing manufacturer of the cockpit flight controls, fuselage, wings, tail, hidden swing wheels while in flight and engine parts, all the radar distances / radio communication that got transmitted between the different region's airport control towers and the pilots on board Flight SQ 321, then finally the aircraft maintenance company logbooks both in London, England, UK as well as in Singapore to determine policy payouts, so the investigators need sufficient time, i.e. many months or more than a year or two to be very careful in presenting their findings and facts to the news media and public, especially if some passengers or all the seriously injured passengers decide to group together to launch a 'Class-Action out-of-court' settlement against Singapore Airlines Limited for their individual cases rather than just only claim the insurance policy payouts.
08-06-24 flight from Ibiza-BA A320. During slight turbulence over the Pyrenees😮 I was amazed at the ignorance of a number of pax who ignored the seat belt signs-
"The rapid changes in G-force caused the aircraft to fall 178 feet, or 54 metres in 4.6s." Isn't it supposed to be the fall causing the changes in G-force instead?
@pettanshrimpnazunasapostle1992
Ай бұрын
Gforce is just a measure of acceleration using the gravity of earth as a unit of measurment (~9.8m/s^2) So any movement which accelerated the unbelted people up or down can be measured in Gforc as well. Edit: nvm i misread ur comment. Yea their phrasing is weird as the rapid fall and rise of the plane is an effect and the Gforce experienced is just a measurement of the fall and rise acceleration. They should have put smth like "wind turbulence etc. Caused plane to fall up and down. People on board experience n amount of Gforce"
@eatdriveplay
Ай бұрын
Both climb and descent produce G force changes, in different directions. Positive and negative G.
@victorminator
Ай бұрын
@@eatdriveplay yes.
@cathdan
Ай бұрын
The drop is 54m, at first they make it sound like the drop is 1mile. Capping
@HonorV2ultimate1tb
Ай бұрын
haha...good point.... non pilots usually write rubbish regarding aviation
So, it's not true that the seatbelt sign wasn't turned on. The passengers didn't realise it because the drop happened a few seconds later. Goes to show the unreliable narrator at work. Seems more and more likely that it's clear air turbulence too.
The key detail they have omitted here is that, after the sudden fall due to unseen turbulence, the sudden climb in altitude that threw people right back down into the floor/seats was the autopilot dangerously over correcting for the loss in altitude. This is implied by them saying "the pilots took over to stabalize the plane, then autopilot was re-engaged"
@PianoWrecker
Ай бұрын
Pilots negligence then ?
@wf6190
Ай бұрын
@@PianoWrecker Everything happened in 4.6 sec, it is too fast for any pilot to react appropriately. They are humans too, and they would've been shocked by the sudden drop.
@FireFoxGaming56
Ай бұрын
Yep
@monteziggler3776
Ай бұрын
@@PianoWrecker My read was more that it might be an issue with the calibration of the autopilot. Perhaps the initial fall was so sharp that the autopilot was programmed to act as though the plane was in free fall and needed to sharply gain altitude, when that was very much not the thing to do in turbulence. I have just been shocked at how underreported that bit about the autopilot making the plane climb has been when it seems to be the most unusual thing about an event that, while rare, is not in any unprecedented whatsoever
Nothing much you can do as you are up in the sky ,you can't run anyway, the only thing you can do is buy insurance, seatbelt on and most importantly, pray and keep your mind just on prayer or if those who has no religion, just think only the good deed you have done in the past, no negative thoughts. 阿弥陀佛🙏
Seemed that autopilot couldn't handle the situation well and it was clear air turbulence supposedly
@kelvinyappie2797
Ай бұрын
There's no issue with the autopilot, it's the plane itself whether it's fit to fly even there's clear air turbulence, in this case as usually we'll wait for the NTSB report sigh.. might as well check 787 dreamliner 😅 can't really trust Boeing/FAA certified airplane
@krollpeter
Ай бұрын
I thought the same
The start of the Monsoon and being around those Arakan Mountains..... its going to get rough...
Just curious why the decision was made to climb higher than 37000 feet?
@mamamememoo
Ай бұрын
I think the autopilot was likely to be in use then.
@cookingwithfluffytiny4371
Ай бұрын
Exactly, the reason?
@noelkwek
Ай бұрын
Yup, why? Autopilot ON meant the avionics calculated and signalled for the aircraft to lift off higher rather than lower because the wind drafts that caused the severe turbulence were detected to come from under the aircraft.
@noelkwek
Ай бұрын
You asked a very good question you know! I think the TSIB, NTSB and aircraft maintenance engineers should take note of your pointers to analysis carefully the final verdict before jumping to a conclusion so soon! Should take months or more than a year rather than within few weeks to conclude findings.
It can be pilot error also
I do like the graphic in the end at Suvarnabhumi airport (as my home airport) where they put the airport terminal in the background. Since I’m not in Bangkok at the moment, it makes me feel a bit less homesick.
Is possible ice formation on the AOA sensors?
Jocelyn Chia not joking today
@edwardv7991
Ай бұрын
LOL! Totally forgot about her but I get ya! She no joke today
Turbelence are worse,people should wear their seat belt when instructed ,for their safety
Can CNA stop the misleading news? The aircraft image is totally wrong, SQ321is a STAR ALLANCE coshare fights by London under Singapore Airline. Is a different type of aircraft being manage by the London management, so stop using our official SQ flights as an example
@CaptStevenHorn
Ай бұрын
This was a Singair B777-300 operated by Singapore Airlines. Do not shift the responsibility.
@hahila-dv8rd
26 күн бұрын
@@CaptStevenHorn Yes I know but coshare flights are being manage by another country that manage. The cabin crew are all not Singaporean, They are pinoys. The actual Singapore airline without the star alliance.. the cabin crew are all local Singaporean. Please know the difference before you comment.
Pilot skill
a lot of passengers don't care about seat belt lights. same people who don't use turn signals... they just don't care
They flew into it they should have diverted around it . Pilot error ?
.... the near vertical drop of 6,000 feet in under 3 minutes needs investigation. You had a plane go thru about 200 feet downward, however nothing I saw on flightaware explains loss of 6,000 feet in 3 minutes. Why would pilots do that to an aircraft already beat up by turbulence. It does not make sense
@lukegreen1705
Ай бұрын
6000 feet in 3 mins is a normal decent lol
💯
Well built aircraft.
It’s so sad that I’m a singaporean
I thought it was 4 minutes the drop, not 4 seconds
My recent first time flight during the Hari Raya holiday from KLIA to Changi. I knew nothing about flights other than from the movies. I buckled the seat belt despite a bit loose and did not unbuckle though was announced safe to do so. Furthermore it was like 45 minutes of flying time. Returning from Changi to KLIA on 12th April noon flight was announced by the pilot of a bit of turbulence since it was raining badly in Singapore since morning. However, nothing happened and my seat beat was intact till safe landing. Flying was nice except for the cheap budget airline and the aged plane was noisy during taxi to the runway. Planning to go to Bangkok soon with a slightly better airline and hope not boarding the 737 Max. I wonder how to find out whether it's 737 Max or AirBus during the booking? kzread.info/dash/bejne/jGtqu9J8qpy0Yrw.html
Just goes to show that even with the most severe turbulence the plane kept flying (I'm trying to reassure myself - a bit of reverse psychology).
So people still gathering, don't forget it's always a matter of time before the next biggest spike in cases, and it maybe those people last travel of their lives.
Honestly this isn't a good representation - why not animate it with full 6 DOF including pitch/roll/yaw, something like a flight simulation?
The animation makes the whole project look like a school project
@confusedcat1633
Ай бұрын
Should've used Blender3D or a flight simulator to recreate this
So, the seatbelt sign was turned on before the incident happened. I am curious if it is at all possible that an aircraft would experience a sudden serious turbulence without warning even for the pilot? I guess I am wondering if it is safe to only wear seatbelt when the sign is turned on or it is best to wear it all the time?
CNA? this quality? National broadcaster? 1st world nation? 2 ways how it all can be better.
Would have been a better video if you didnt pause it for the explanation
they flew into a thunderstorm ... end of story
Seat belt must always to be wear. If you go toilet that the only time to unbuckle it,
What's with the background music😂
@encentuate
Ай бұрын
i know right.. was thinking the same thing. Like some spy/murder issue 😅
Lol always them idiots that don't follow rules. Pilots don't turn on the seat belts on for no reason.
who is responsible for this?
@bahagiartopasaribu3971
21 күн бұрын
No one. We cant fight Nature and actually you should keep using your seatbelt even the light turned off perhaps you want to go to toilet. So for the victims its their own mistake
Like any other airline, it's seeking to limit its liability, I think.
So it went up then fell, what was it avoiding
@eggizgud
Ай бұрын
the turbulence indicated by the shakes?
the background showing clear blue skies is certainly not the case. If you were to show the weather charts at this time only then you can verify the surrounding weather. This video gives a false impression of the surrounding weather. You cant fool real pilots....
The sudden drop in altitude happened 8 seconds after the seat belt sign was turned on. That might not be enough for some passengers out of their seats to sit down and buckle up. Should the warning be given earlier before the climb in altitude? This is a question and not a criticism.
@KokoTheGorilla69
Ай бұрын
They tell you to leave your seatbelt on at all times when seated. I do. I have a brain.
And one passenger died.....
Pilot disconnected autopilot. Boeing FCTM ( Flight Crew Training Manual ) says to leave autopilot engaged in inadvertent overspeed and only gradually employ partial speedbrake - not full speedbrake which at high altitude and high Mach No. would induce massive shockwave and loss of lift. I have thousands of hours Captain B777.
6000 feet in 3 mins is a normal decent lol
CNA, why don't you apologise here for repeatedly giving incorrect information in previous news reports, for example wrongly reporting that the airplane was "free falling for 6,000 feet". Such incorrect reporting repeated after I had already pointed out in the comments that this was an incorrect interpretation of the flight data. You can at least apologise for ignoring my comments for so many days, while I explained your mistakes right away after the first incorrect report.
@kapisce11
Ай бұрын
perhaps they're too busy to stoke your ego🤷♂
@aaronogt
Ай бұрын
Mabye they lazy to get right
Autopilot needs massive re-evaluation.
@LonganLee
Ай бұрын
Where's the due diligence
@JojoJoget
Ай бұрын
Autopilot working as intended, its a literal force of nature, suck it up
Big deal … always where your seat belt … had worse …
@Jnoooooo
Ай бұрын
Aren't you the real big boy then?!?!
0:17 The plane vibrated SLIGHTLY and then it climbed 110 metres. In the official statement they said the climb was "UNCOMMANDED". So why did the plane climb110 metres in response to slight vibrations? 0:23 why did the seat belt sign was switched on AFTER the plane climbed 110 metres? Was the pilot asleep? 0:48 "rapid chanes in G-force caused the aircraft to fall"? What is that supposed to mean? It like saying the "car accident was caused by a tree growing by the road"".
@DallyYankees
Ай бұрын
Have u even taken a plane before to know their usual protocol? Lol
@marcuskarentan
Ай бұрын
At 0023 : the climb may not necessarily be caused by turbulence ( of course on hindsight it was)i, it could be autopliot malfunction or flight controls issues or pitot blockage etc ,, it would take sometime for pilots to ascertain the cause of it therefore it took a while for them to switch the seat belt sign ON.
@lordjim3109
Ай бұрын
@@marcuskarentan Exactly. So the media version of what caused that incident is not necessarily true either.
@Davionknight1
Ай бұрын
Developing convective activity is jargon for clouds, specifically - cauliflower looking clouds on a hot afteroon. These clouds tend to form and rise quickly hence pushing the plane upwards. Commerical planes are not able to outclimb these clouds. I'm curious why it wasn't picked up on the weather radar, which basically reflects off water droplets, i.e. clouds.
@cookingwithfluffytiny4371
Ай бұрын
Why it climb is the key is the most important question
Blame Boeing
@ZackAviator
6 күн бұрын
Boeing Does Not Control The Weather
That's a boeing plane too btw, their autopilot systems had been a problem for awhile now.
@kickedinthecalfbyacow7549
Ай бұрын
No they haven’t
@animegamingdude
23 күн бұрын
since when has the 777 had autopilot problems
Luckily it was not MAS.
@lordjim3109
Ай бұрын
what is MAS?
@JojoJoget
Ай бұрын
They use the same plane dumdum
@marcuskarentan
Ай бұрын
It should not happen to anyone .
It was flown by a Chinese pilot
@cressmanfoster
Ай бұрын
Clever, troll.
@summerapple7062
Ай бұрын
Racist smart alec
@edjeoranje4865
Ай бұрын
No it was an Indian pilot
@mamamememoo
Ай бұрын
It was an experienced pilot too
i shall not watch. i shall snigger. statistical analysis - freak occurance. current plane manufacturers are ... pilots are ... leave exising designs untouched. newer should be diesel piston.
@engchoontan8483
Ай бұрын
plane aerodynamics pilot - operational-envelope computational capability designed-specifications performance-parameters negative-g super-mario italiano nintendo my-foot