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Preliminary report into Air India crash released

bbc.co.uk

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Re: Preliminary report into Air India crash released

#551
post #72

it makes sense to me that the pilot who said "I did not do it" actually did do it without realizing it, was supposed to be putting the landing gear up when he committed a muscle memory mistake. it happened around the time the landing gear should be up, and this explanation matches what was said in the cockpit, and the fact that the landing gear wasn't retracted. I think this idea was even floated initially by the you…

There is no possible way to confuse these two actions. There's a reason a wheel is attached to the gear lever.

The other day I was eating dinner while chatting with my partner. I finished eating and needed to pee and throw away the fast food container. I walked straight to the bathroom, raised the toilet lid and threw the fast food container right into the toilet.

Weird mistakes can happen.

My partner got a good laugh out of it

Re: Preliminary report into Air India crash released

#552
post #441

Earlier quoted context omitted.

I want you to guess how many traffic accidents are caused by accidentally reversing when you intended to go forward. Test your mental model against the real world. This is your opportunity.

Those are caused by operating the same lever in a slightly different manner. Not comparable to two completely differently designed levers placed far apart. Same goes for accidental acceleration instead of braking. Two of the same kind of lever right next to each other. Accidental acceleration while intending to turn on the wipers would be a fitting example, I don't think that happens though.

You’re just overlaying your mental model.

Think of the action as a stored function. Maybe they’ve always recalled the function as part of a certain list. It can be a case where the lists get confused rather than the modality of input (lever etc)

Re: Preliminary report into Air India crash released

#553
post #148

> The aircraft achieved the maximum recorded airspeed of 180 Knots IAS at about 08:08:42 UTC and immediately thereafter, the Engine 1 and Engine 2 fuel cutoff switches transitioned from RUN to CUTOFF position one after another with a time gap of 01 sec. The Engine N1 and N2 began to decrease from their take-off values as the fuel supply to the engines was cut off. So the fuel supply was cut off intentionally. The swi…

So you're telling me that those switches don't have a voice that says "fuel cutoff switches transitioned" like in the movies? That's bad design

WHOOP WHOOP

TERRAIN, TERRAIN! PULL UP! PULL UP! (WHOOP WHOOP)

Re: Preliminary report into Air India crash released

#554
post #72

it makes sense to me that the pilot who said "I did not do it" actually did do it without realizing it, was supposed to be putting the landing gear up when he committed a muscle memory mistake. it happened around the time the landing gear should be up, and this explanation matches what was said in the cockpit, and the fact that the landing gear wasn't retracted. I think this idea was even floated initially by the you…

[deleted]

Re: Preliminary report into Air India crash released

#555

Earlier quoted context omitted.

> It's difficult to conclude anything other than murder-suicide. Is it possible it could have been an accident or a mistake by one of the pilots? How intention-proofed are engine cutoffs?

It could be defective switch springs, fatigue-induced muscle memory error, or something else. The pilot who did it saying he did not may not have realized what he did. It's pretty common under high workload when you flip the wrong switch or move a control the wrong way to think that you did what you intended to do, not what you actually did. That said Boeing could take a page out of the Garmin GI275. When power is re…

I'm doing it all the time while rebasing commits or force pushing to my branch. Sometimes I would just click the wrong buttons and end up having to stay late to clean the mess. It's a great thing I'm not a pilot. I would be dead by now.

Re: Preliminary report into Air India crash released

#556

Earlier quoted context omitted.

Landing gear controls are nothing like the fuel shutoffs. And they are in completely different locations. Landing gear controls are in front of the throttle, fuel shutoffs are aft of the throttles.

Is that "nothing like" though? You are saying they are in different places, ok, but are they similar in other ways? Are both controls the same shape? size? colour? texture?

No, no, and no.

Different controls with different t shapes, operated in different ways, of different number, different size, and very different positions. One is down almost on the floor, and well rearward, the other is at stomach height and well forward.

The fuel cutoffs also require pulling the control out and over a guard.

Re: Preliminary report into Air India crash released

#557

Earlier quoted context omitted.

Landing gear controls are nothing like the fuel shutoffs. And they are in completely different locations. Landing gear controls are in front of the throttle, fuel shutoffs are aft of the throttles.

Is that "nothing like" though? You are saying they are in different places, ok, but are they similar in other ways? Are both controls the same shape? size? colour? texture?

The landing great lever is shaped like a wheel as a design affordance. It would be VERY hard to confuse

Re: Preliminary report into Air India crash released

#558
This report is outlining the known facts of the flight at present. The main one being the movement of the fuel switches to the off position did occur a few seconds after take-off, almost certainly by one of the pilots. And this was the primary cause of the crash. However, blame has not been apportioned and the reason for why is not known.

blancolrio puts its well: https://www.youtube.com/watch?v=wA_UZeHZwSw

Re: Preliminary report into Air India crash released

#559
post #72

it makes sense to me that the pilot who said "I did not do it" actually did do it without realizing it, was supposed to be putting the landing gear up when he committed a muscle memory mistake. it happened around the time the landing gear should be up, and this explanation matches what was said in the cockpit, and the fact that the landing gear wasn't retracted. I think this idea was even floated initially by the you…

Is there a video feed of the cockpit inside the black box? If not there should be one as even my simple home wifi camera can record hours of hd video on the small sd card. And If there is, wouldn't that help to instantly identify such things?

My thoughts exactly.

In fact, you could add some AI to it, even, as an embedded system with a decent GPU can be bought for under $2000. It could help prevent issues from happening in the first place. Of course airgapped from the actual control system. But an AI can be very helpful in detecting and diagnosing problems.

Re: Preliminary report into Air India crash released

#560

Earlier quoted context omitted.

No neither black box stores video. One stores audio on flash memory and the other stores flight details, sensors etc. I don’t think video is a bad idea. I assume there is a reason why it wasn’t done. Data wise black boxes actually store very little data (maybe a 100mbs), I don’t know if that is due to how old they are, or the requirements of withstanding extremes.

Not sure why something so important isn't included. Heck they can make a back up directly to the cloud in addition to black box considering I'm able to watch YouTube in some flights nowadays.

ALPA (pilot union) has consistently objected to cockpit video recording. I believe other pilot unions have a generally similar stance.
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