LIVE | Air India Crash Report | Air India Ahmedabad Plane Crash Initial Probe Report Out | N18L - video Dailymotion

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LIVE | Air India Crash Report | Air India Ahmedabad Plane Crash Initial Probe Report Out | N18L  #airindia #ahmedabad #ahmedabadplanecrash The Aircraft Accident Investigation Bureau (AAIB) has released the preliminary report on its investigation into the Air India flight 171 crash in Ahmedabad, in which 260 people, including 241 onboard passengers, were killed on June 12.  The 15-page report reveals the dramatic cockpit voice recordings in which one of the slain pilots notices that the fuel had been cut off to both engines during the takeoff.  #airindia #ahmedabad #ahmedabadplanecrash #news18live

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00:00the final report comes out now soon after the crash report both air india and boeing said

00:05they will continue to cooperate with the authorities in the ongoing probe so let's

00:10try let's try and understand the 787 fuel control switches there are two modes in these switches

00:15there is the run and cutoff so this is the lever for takeoff landing and this is the main lever

00:20beneath that you see the brackets present and then you have these two switches this is for the left

00:27engine and this is for the right engine so engine one and two however you want to call them this is

00:32what it does this is the r position or run position and down position is the cutoff position now one

00:38there are brackets here these brackets are there to avoid that you're going for this switch or you

00:44touch this and there are some accidental movements that's one the second is there is supposed to be

00:49a lock at the top or at the bottom to keep the switch in place it's a spring switch so it's got

00:54to stay in place once you pull it down it stays there and you lift it up it's got to be lifted up

00:59it doesn't go float here and there easily now it's used for cutting off or starting the engine shut down

01:06restart this is what the fuel cutoff does fuel supply is critical because everything is powered by the

01:11engines and the supply has to go fuel has to go the report very clearly says there was no contamination

01:17of fuel the report also says there was effort to restart the engine that means move this from cutoff

01:22to run again and kickstart the engines too and this was done but if i if this while the aircraft

01:30is running if from run to cutoff what will happen is there will be a sudden stalling of the engine

01:35the engines will shut down there will be loss of thrust especially at a time you have liftoff this

01:41aircraft was 2 lakh 13 000 kilograms heavy well within the overall max limit of 2 lakh 18 000 kilograms

01:48it was also carrying 54 000 liters of fuel on it and soon after liftoff this switch off happened how

01:56is a big question why is another big question what happened is what this report is telling us

02:03now the lock requires a switch to be lifted before and there are guarded brackets to prevent accidental

02:08movement so these are questions now that remain aviation experts are saying this job of switching

02:15up and pushing down or putting up between run and cutoff this is a manual effort highly improbable that

02:23this could have been remotely tampered with so then what happened in the cockpit is a big question it now

02:30points to the cockpit data recording and the details of what was the voice interaction between the two pilots

02:35and with shrivastar tracking the story very carefully arunima pile meta pallavi and aman also with us

02:41we'll try and go across to all of them in a bit but unwith this is the big part was there there are two

02:47questions one if this cannot be remotely done what was the exchange between the two pilots secondly who

02:54was the pilot in command and who was the pilot monitoring because one of the pilots had more than

03:00eight thousand eight hundred hours of flying the other pilot had about eleven hundred hours of flying

03:05both were both as per the report were well rested and competent enough to a to fly the point is if you

03:14are driving a car or a bike as you are starting the car will you ever turn the switch off fuel gauge off

03:21now how can that be part done at a time of liftoff when maximum thrust is required why would somebody cut

03:28off the fuel these are questions yeah certainly and see these are questions and like you pointed out

03:35that the the these fields you just cannot be remotely tampered also it it looks very unlikely when the

03:41aviation experts have said that it is highly impossible that the fuel could have been tampered

03:46remotely or there could be any you know sabotage angle because it would require mechanical expertise

03:51or technical expertise at least to find out what switch to to tamper with and exactly what it will lead to

03:58and also like previously we have seen that the report has shown that the two pilots had also

04:03interacted the corporate voice recorder's data it clearly shows that one pilot had asked the other

04:07that you know did you switch that switch off but he says i did not so it is also not clear since the

04:12beginning that was it the first first officer or was it the pilot in command who was actually handling

04:18the flight at that time and who has is speaking to whom so that is also one thing that needs to be

04:23clearly be concluded upon and also the flight the we are talking about the flight switch the engine fuel

04:29switch and it is also not clearly mentioned in the report as of now even though it is a preliminary

04:34finding but this has not been made clear as to at what time was the fuel switch found to have been

04:41transition from run to cut off because we have we are seeing RAT deployment since the beginning since the

04:47aircraft took off within 15 to 20 seconds we are seeing in fact it is mentioned it is inside in

04:53this report i just read that page and i'm going to pull that out and then we can then perhaps

04:58deliberate it the last part last page of the report and i'm just pulling it out last but one page of

05:04the report it says see the aircraft achieved the maximum recorded airspeed of 180 knots it's the last

05:12but one page okay 180 knots at about 808.42 this is what it very clearly says 808.42 and then it says an

05:22immediately thereafter so at 808.42 808.43 engine one and engine three fuel cutoff switches transition

05:31from run to cutoff position one after the other with a time gap of one second so each one was cut

05:37off with a time gap of one second exactly the time that you are lifting off and somebody has the time

05:43or suddenly it goes one down one down and that's one second so it is saying that as it recorded the

05:50aircraft achieved maximum airspeed recorded airspeed of 180 knots and this was consistent with lift off

05:55at 808.39 808.39 is lift off and exactly three seconds later is 180 knots and at that time three

06:04seconds after lift off we have engine one switching off and four seconds after lift off engine two

06:11switching off that's how we could that's what we can infer from the report uh on with yes but see the

06:16deployment of ram air turbine that is not mentioned actually what time did it take place because

06:23experts we have spoken to earlier they have gone on to say that the deployment of turbine clearly

06:28indicates as to at what time did the aircraft experience that the fuel supply was cut off and

06:34the hydraulic failure was detected also the the turbine that was deployed that also clearly indicates that

06:40there was a power outage or there was hydraulic failure which because of which the turbine had to

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07:01right but then at the bottom it says as per the eafr data both engines n2 values passed below minimum

07:07idle speed and the rat hydraulic pump began supplying hydraulic power at about 808.47 so

07:14808.47 is recorded at the bottom of the page 808.42 is when the first engine shuts off 808.43 the second

07:24engine shuts off because they said within one second of each other four seconds later the engines have

07:30decelerated to a level that rat will deploy at 808.47 that it is starting so it has started supplying

07:37hydraulic power so in those four seconds between 808.43 and 808.47 that's when the engine deceleration

07:45has happened rat has been deployed which is now confirmed with the images that were recorded on cctv

07:51during liftoff

07:52now and with stay on with us we'll go to our reporters and our experts in a bit but first

08:00questions are also being raised on how the fuel control switches were cut off mid-air

08:04now here is how that system works fuel is drawn from tanks pressurized by pumps and it flows through lines

08:13it passes through filters to remove impurities fuel control unit then regulates the fuel flow to the

08:19engine fuel and air are mixed are mixed in the carburetor before cylinder delivery fuel air mixture

08:27is ignited producing power to drive the aircraft but it all has to happen when there is fuel flow

08:34this report viewers very clearly confirms that there was no contamination with fuel whatever was checked

08:41and also there was a revival effort to revive the aircrafts and when the effort to revive the aircraft

08:48happened fuel was pumped into the engines engine one stopped decelerating revived but did not get

08:55enough thrust engine two had led to a certain level of destroyed deceleration to to that extent that

09:02despite extra fuel being pumped into that re into into that engine it did not revive itself and it all

09:08happened in a matter of seconds and there wasn't enough elevation at 625 feet 2,13,000 kilograms of

09:14weight no thrust it just crashed all between all between 808 33 to 809 11 that's when all of this has

09:26transpired let's go across to our guests uh captain sora bhatnagar joining us live former senior pilot

09:31a320 uh and uh indigo and also kvj roff i'm a cabin crew air india joining us at this point

09:38my namaste and jain captain sora bhatnagar if i may uh ask you how would you how morning uh how would

09:45you morning morning we've we've had this conversation about the rat we've also talked about the fuel tanks

09:51we've also talked about this but this is the fuel control switch how can the fuel control switch

09:56at liftoff within three seconds of liftoff go from run to cutoff and one pilot looks at the other and

10:04asks why did you do that and the other pilot says hey i have not done it

10:10yeah yeah it's just very very it's quietly and it's totally unbelievable how it can happen and it's

10:15very easy first of all to blame the pilot and the third thing is how this report came two days before

10:20in wall street journal that this fuel control switches having said that now the thing is that

10:24yes within three seconds we all have read the report within three seconds of liftoff the fuel

10:30control switches were commanded from run to off uh what i can think of it's not possible at all because

10:36it's a spring-loaded switch you have to manually lift it off the detent then put it back to the

10:43off position automatically it will not even with the inertia it will not go so please explain uh for

10:51somebody who does not understand what is a spring loaded switch does that mean is that does that mean

10:57that there has to be a certain effort to try and bring it down or pull it up and once you push it up

11:02again will it still be jammed there or can it just drop off please explain g no

LIVE | Air India Crash Report | Air India Ahmedabad Plane Crash Initial Probe Report Out | N18L

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