Posts by user "AirScotia" [Posts: 49 Total up-votes: 0 Pages: 3]

AirScotia
July 09, 2025, 23:20:00 GMT
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Post: 11918695
Originally Posted by V1... Ooops
There has been discussion recently about a procedure that involves moving the fuel switches to CUTOFF and then back to RUN following a dual engine failure.

Attached is an image of a page from the Air India 787 Training Manual that discusses this procedure.

I am submitting this without comment or opinion.

Nobody seems to have discussed this. If I'm reading it right (and I'm not a pilot), it seems to be suggesting that in the event of a dual engine failure, a restart should be attempted while the engine still has high RPM? It also seems to be indicating that fuel switch resetting should be attempted if the restart has failed to start the engine?




Subjects (links are to this post in the relevant subject page so that this post can be seen in context): Dual Engine Failure  Engine Failure (All)  Fuel (All)  Fuel Cutoff Switches  RUN/CUTOFF  Relight  V1

AirScotia
July 10, 2025, 16:15:00 GMT
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Post: 11919117
I don't think that message has been confirmed? Other reports have the pilot (identity not confirmed, I don't think?) just saying 'Mayday'.

Subjects (links are to this post in the relevant subject page so that this post can be seen in context): MAYDAY

AirScotia
July 11, 2025, 22:42:00 GMT
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Post: 11919937
If there was a jumpseater, would that be officially recorded before they took off, or is it more of a casual decision?

Subjects: None

AirScotia
July 11, 2025, 22:49:00 GMT
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Post: 11919947
Originally Posted by za9ra22
All the supposed quote does, is tell you that the person asking the question didn't perform the action, thus presumed the other had.

There are many plausible explanations, not just the one or two you might choose to see in this scenario.
As someone suggested, the person asking the question might have asked it to cover the fact that he had performed the action.

Subjects: None

AirScotia
July 12, 2025, 09:45:00 GMT
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Post: 11920438
The report says the pilots cleared a test for alcohol before flying. I presume that's a breath test of some kind?

This is a grisly question, but will there be physical evidence to test for drugs? As in, medications that should have been disclosed to Air India, or medications that were disclosed but were not taken.

Subjects: None

AirScotia
July 12, 2025, 10:17:00 GMT
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Post: 11920457
Originally Posted by MR8
No, that's an impossible scenario.
But you do have a point here. If the Flight Deck Door Surveillance system was inoperative, perhaps Air India has a procedure requiring someone to be in the flight deck to check the spy hole before opening the door? Just a thought.
On the closed Part 1 of this discussion, one poster said that there was a jumpseater - a cabin crew member who was learning to fly. This was never repeated or further discussed, and I couldn't work out if it was just conjecture. But it's stuck in my mind.

Subjects: None

AirScotia
July 12, 2025, 12:33:00 GMT
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Post: 11920583
The report doesn't say WHEN the pilots spoke to each other. The one doing the asking might have been speaking ten seconds after CUTOFF, simultaneously moving switches to RUN. Or, he may have asked soon after observing the other's action, and there was a several seconds' delay before getting an answer.

Subjects (links are to this post in the relevant subject page so that this post can be seen in context): RUN/CUTOFF

AirScotia
July 12, 2025, 21:52:00 GMT
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Post: 11920869
The fact that SAIB: NM-18-33 was specifically mentioned, and that Air India's failure to inspect this airframe re the advisory was specifically mentioned, and that the exchange between the pilots specifically included wtte "I didn't", suggests to me that the report would like to hint at maintenance / build problems rather than deliberate pilot action.

Subjects (links are to this post in the relevant subject page so that this post can be seen in context): SAIB NM-18-33  Special Airworthiness Information Bulletin

AirScotia
July 12, 2025, 22:37:00 GMT
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Post: 11920895
Originally Posted by KSINGH
that would surely involve a safety directive at this stage though?

I had posted before (and it had been deleted for some reason) that is appears as if air india is taking a substantial hit on their widebody capacity at the moment and keeps cancelling routes right now (the latest being LGW), could they be doing specific extra maintenance/ checks having more insight than almost any other stakeholders at this point?
Flights to Gatwick seem undisturbed - Air India Dreamliners are still going over me (approach to LGW) every day.

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AirScotia
July 13, 2025, 10:46:00 GMT
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Post: 11921220
Originally Posted by Someone Somewhere
I suspect they thought that stating the switches had been replaced twice since the bulletin was published would dispel such concerns.
Then why mention the advisory at all? And why mention it and still say nothing about whether the switches were found to be defective or not? If they were indeed defective, or if it wasn't possible to tell, I'm sure that would have been in the report. So presumably there was nothing wrong with the switches and the mention of the advisory is irrelevant. So why is it there?



Subjects: None

AirScotia
July 13, 2025, 14:27:00 GMT
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Post: 11921357
Originally Posted by paulross
On the site that I maintain that covers this thread here: https://paulross.github.io/pprune-th...171/index.html I removed the subject that described deliberate action on the part of the pilot(s) for reasons I explained here: Air India Ahmedabad accident 12th June 2025 Part 2

I would restore that subject if any hard evidence appears that suports that theory, not on the basis of speculation (and out of respect to the families and memories of the flight crew).

For those thinking along those lines could I offer this challenge: All the civil aviation pilot suicide cases that I have heard about have been achieved by a rapid descent from cruising altitude. It is a pretty sure outcome. But to switch off the fuel just after takeoff, would you really expect that to succeed? Supposing the other pilot noticed and corrected this in one or two seconds rather than ten, then you would have failed.

I'm not saying people intent on this behaviour are being rational but even by the laws of un-rationality it seems an unlikely way of trying to achieve your goal.
It seems a fairly smart method to me, especially if you want to hide who was responsible, and if you could arrange to be the PM.

There are only two parts of the flight where the PF's attention will be entirely focused in front of him - takeoff and landing. Cutting the fuel switches on landing is pointless - the plane will in all likelihood land safely as a glider.

Above a certain altitude after takeoff, there will be time for the PF to recover the situation. Doing it as soon as the wheels have left the ground pretty much guarantees a crash.

Doing it in cruise - FO off to the toilet etc. - it will be obvious which yoke was the one doing the pushing, unless of course you switched seats when your colleague left.

The fuel switches are effectively anonymous.

Subjects (links are to this post in the relevant subject page so that this post can be seen in context): Fuel (All)  Fuel Cutoff Switches

AirScotia
July 13, 2025, 19:03:00 GMT
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Post: 11921538
No-one has discussed the concept of suicidal ideation, where a person may idly 'play' with ideas of how to end their life. If someone 'played' with the idea of how to end their life but make it look accidental, I think they might come up with a scenario such as this.

Ideation doesn't always result in an actual act, but if the thoughts came from life factors not being fully brought into consciousness, there may be a 'dream sequence' moment where they actually do the thing they've played with in their mind. It's not pre-planned or intentional, and the person who's acted out may not even be consciously aware they've done so.

Subjects: None

AirScotia
July 13, 2025, 19:45:00 GMT
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Post: 11921579
Originally Posted by Chernobyl
I think what you're actually referring to are known as intrusive thoughts , not suicidal ideation. The former are generally normal and experienced even by the most sane and rational individuals. The key point in the cited reference is this: "In reality, a thought\x97even a very scary thought\x97is not an impulse." I'm not aware of any evidence that suggests that people act out intrusive thoughts -- even accidentally.
No, I meant suicidal ideation. Intrusive thoughts can be about embarrassing situations, fear you'll do something awful like sexually assault someone or attack a child. Suicidal ideation is specifically about imagining your own death and the means to achieve it. You may feel you're simply conducting a thought experiment, and not be troubled by it until the moment you find yourself on the edge of enacting the plan. Intrusive thoughts are troubling and people are consciously aware of them.

Subjects: None

AirScotia
July 13, 2025, 20:06:00 GMT
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Post: 11921597
Originally Posted by Chernobyl
I think what you're actually referring to are known as intrusive thoughts , not suicidal ideation. The former are generally normal and experienced even by the most sane and rational individuals. The key point in the cited reference is this: "In reality, a thought\x97even a very scary thought\x97is not an impulse." I'm not aware of any evidence that suggests that people act out intrusive thoughts -- even accidentally.
Sorry to reply twice, but's worth noting that Samaritans responders (Befrienders in the US?) are trained to ask if the caller has considered a means of killing themselves. If they have, they move right up to a red alert. Sometimes the question is the first time the person recognises that they do in fact have a plan ready to go.

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AirScotia
July 13, 2025, 21:26:00 GMT
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Post: 11921676
Originally Posted by andihce
Meaning no disrespect to pilots (indeed, quite the opposite), and admittedly I'm no psychologist, but it strikes me that to postulate that a pilot might cause the crash of a large aircraft because of suicidal thoughts is to seriously understate the action taken , because such action also means the likely death of all passengers and aircrew, presumably all or most of whom are perceived as innocent bystanders by the actor. Whatever term you want to apply to that action, it is far more and far worse than individual suicide, and I would think it needs a pretty substantial and convincing body of evidence, including psychological evidence, to explain.

I know such cases have happened (or may have happened, as in MH370), and perhaps cannot be excluded here with what we know at present, but I for one would be far more inclined to suspect something along the lines of the various "brain fart" possibilities that have been mentioned, absent further data.
Sadly, the evidence is that suicides have usually reached a point where others don't exist. You only have to look at the cases mentioned on this very thread to see that having a conscience about the collateral victims is not necessarily high. (And 'SLF' is not a term of endearment.). In the past week, a friend of mine lost his girlfriend to suicide, and she had a young child. A few years ago, a friend with a history of depression took her own life very deliberately, leaving her much-loved husband to face a police investigation (they suspected he'd killed her) and an entire family traumatised. In the moment, you just want out.

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AirScotia
July 14, 2025, 11:11:00 GMT
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Post: 11922092
May I just point out that the survivor's account of what he remembered seems to have been entirely accurate?

He heard a loud bang - RAT did deploy, and does do so with a loud bang.

Green and white lights came on - very likely emergency lights

Aircraft seemed to be struggling for height - it was

Sudden roar of an engine - we know No. 1 powered up just too late

A number of us here discounted what he said because he was traumatised and, you know, just a passenger. But he wasn't wrong about anything.


Subjects (links are to this post in the relevant subject page so that this post can be seen in context): RAT (All)

AirScotia
July 14, 2025, 12:12:00 GMT
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Post: 11922145
Originally Posted by barrymung
.
A suicide attempt is very unlikely, because death in that situation is far from assured.
It was the one short period of the flight where it would certainly crash the aircraft but implicate neither pilot definitively.

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AirScotia
July 14, 2025, 13:58:00 GMT
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Post: 11922233
Originally Posted by Loose rivets
Having said the "Why have you" question was said in subservient manner, I'd implied it must have been the captain that cut the fuel. However, I'm profoundly puzzled by the fact that he would hardly leave his old dad alone since he was going to devote his life to him - and to do it in such horrific circumstances which his father might have fully comprehended.

While depressed people get lost in their thoughts, this would have been a total reversal of his caring nature. It's just another factor that just doesn't make sense.
Suicide rarely makes sense to other people. Awareness closes down until there's only yourself left. People who are loving and loved leave behind shattered families.

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AirScotia
July 15, 2025, 08:50:00 GMT
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Post: 11922750
Given the engines roaring, headphones etc. - would it have been possible for the PF to hear the switches being clicked?

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AirScotia
July 15, 2025, 11:24:00 GMT
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Post: 11922853
Originally Posted by 51bravo
For the action slip theory, while worth of considering, I have one question. That is that both switches are reported to be moved to CUTOFF at practically the same time, quote "within 0.1 seconds". You can not move those switches one after the other in 0.1 seonds (grip one, pull it, move it, let loose , grip the other one ...).

Question: is it an often encountered practice when arriving at the stand, to shut-down both engines simultaneously? The switch design seems to try to prevent simultaneous action. But we are humans, right?
The report says '01 seconds'. You mind has put in the decimal point.

Given sampling rates, it's been established here that this is anything up to 2 seconds.

Subjects (links are to this post in the relevant subject page so that this post can be seen in context): Action slip  Dual Engine Failure  Engine Failure (All)  RUN/CUTOFF