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re: June 12, 2025: Air India 787 Dreamliner crashes in the city of Ahmedabad

Posted on 6/14/25 at 10:47 am to
Posted by MoarKilometers
Member since Apr 2015
21130 posts
Posted on 6/14/25 at 10:47 am to
quote:

I predict air india stock is about to be a lot cheaper.

Fify
Posted by UncleFestersLegs
Member since Nov 2010
16880 posts
Posted on 6/14/25 at 8:44 pm to
quote:

Any updates? Seems like original thoughts were pilot error, recent findings may lead to plane issue?
the post a couple of from yours sounds the most plausible

quote:

you can clearly hear the prop on the RAT spinning.


With the better audio you can hear a prop spinning but not jet exhaust. Dual engine failure would deploy the RAT. Game over at 600 feet with that AOA
Posted by WhiskeyThief
Madisonville
Member since Oct 2018
695 posts
Posted on 6/15/25 at 3:31 am to
quote:

Not a good look for Boeing


How about “Not a good look for Air India pilot training”
Posted by redstick13
Lower Saxony
Member since Feb 2007
40884 posts
Posted on 6/15/25 at 7:52 am to
Bad time to be flying in India.

quote:

Seven people have died in a helicopter crash in the northern Indian state of Uttarakhand, officials have said.

LINK
Posted by HeadCall
Member since Feb 2025
5715 posts
Posted on 6/15/25 at 7:54 am to
quote:

With the better audio you can hear a prop spinning but not jet exhaust. Dual engine failure would deploy the RAT. Game over at 600 feet with that AOA


Dual engine failures are just damn rare though. I wonder if they lost one engine on takeoff and mistakenly shutdown the wrong one. Wouldn’t be the first time that’s happened

I think there would have been some sort of visual indication of that though.
This post was edited on 6/15/25 at 7:55 am
Posted by BHM
Member since Jun 2012
4010 posts
Posted on 6/15/25 at 8:20 am to
quote:

. I wonder if they lost one engine on takeoff and mistakenly shutdown the wrong one.



I did not notice any abrupt yaw that would typically happen if one engine went out. Guess it could have been a gradual loss of power and the pilot flying could have easily adjusted for. But you are right, dual engine failure is very rare. If it were bird strikes you would see some flames out the rear of the engine or smoke or some indication . I see nothing.


Not sure I would base the audio quality of a mobile phone to determine if the engines were producing thrust as being suggested by some. Phones have an odd way of filtering out loud sounds.
Posted by 777Tiger
Member since Mar 2011
92390 posts
Posted on 6/15/25 at 8:53 am to
quote:

I did not notice any abrupt yaw that would typically happen if one engine went out.


not going to see much of that, if any, on a 777 or 787, they have thrust asymmetry compensation and rudder-control wheel crosstie below 210 knots, looking a lot like dual engine failure or loss of thrust, tail looked to be pretty much intact, probably already have the recorders
Posted by UncleFestersLegs
Member since Nov 2010
16880 posts
Posted on 6/15/25 at 9:10 am to
quote:

Dual engine failures are just damn rare though. I wonder if they lost one engine on takeoff and
ot does seem crazy. There are several other reasons that can cause the RAT to deploy though. The black box should definitely provide the answer
Posted by 777Tiger
Member since Mar 2011
92390 posts
Posted on 6/15/25 at 9:17 am to
quote:

There are several other reasons that can cause the RAT to deploy though


dual engine failure, loss of both main AC buses, loss of all three hydraulic systems, or manual deployment
Posted by Kcrad
Diamondhead
Member since Nov 2010
67029 posts
Posted on 6/15/25 at 9:21 am to
I wonder if it could be a fuel issue that shut down both engines.
Posted by 777Tiger
Member since Mar 2011
92390 posts
Posted on 6/15/25 at 9:22 am to
quote:

I wonder if it could be a fuel issue that shut down both engines.


fuel contamination would be high on the suspect list for me
Posted by bacchus99
Member since Jan 2017
27 posts
Posted on 6/15/25 at 10:00 am to
“Thrust not achieved... falling... Mayday! Mayday! Mayday!” the pilot said before the catastrophic crash that killed at least 270 people on Thursday.

Curious what the cause will end up being. Air India inspecting all 787 with ge engines.

LINK
This post was edited on 6/15/25 at 10:04 am
Posted by sotex
Member since Oct 2018
233 posts
Posted on 6/15/25 at 10:07 am to
It’s my top suspect concern as well, yet I think this is misunderstood. The tanks are ‘scooped’ from the bottom to be fed to the fuel system/engines, and there are filters involved also so water at the top would not easily be a factor. The big center tank is used initially and while it can have its own ‘weather’ system internally as it empties it is unlikely to have had that much water to have caused a problem there.

To my understanding thus far, it is more likely the engines/flight computer were programmed in error for the altitude as to when they would ‘roll back’ take off power, and could be combined with an incorrect ‘flaps 1’ setting (instead of 5 or 10). The 787 wouldn’t let them ‘not deploy flaps’ at all without intentionally doing so, but programming the takeoff incorrectly is a possibility.

The Indian officials are having the GenX engines on other planes checked so I suspect they are in ‘cover up’ mode partially but realistically the crew probably made a series of errors that resulted in the crash, again just my opinion.
Posted by 777Tiger
Member since Mar 2011
92390 posts
Posted on 6/15/25 at 10:23 am to
quote:

the engines/flight computer were programmed in error for the altitude as to when they would ‘roll back’ take off power


really wouldn’t have any bearing if they both quit, and if only one quit below engine out acceleration altitude the remaining engine wouldn’t reduce thrust from TO power, I think I read where they didn’t get above 600’, I’ve never seen an engine out acceleration altitude less than 800’ AFL
Posted by Lsut81
Member since Jun 2005
85125 posts
Posted on 6/15/25 at 10:27 am to
quote:

777Tiger



You're likely the one that would have the most insight on this board and your first post got downvoted

Posted by 777Tiger
Member since Mar 2011
92390 posts
Posted on 6/15/25 at 10:29 am to
quote:

You're likely the one that would have the most insight on this board and your first post got downvoted


sir, this is the OT! and I have a pretty good idea of who performed the dastardly deed
Posted by sotex
Member since Oct 2018
233 posts
Posted on 6/15/25 at 10:31 am to
Yeah that’s the other problem I can’t reconcile. Even if entirely screwed up on the programming they got high enough to advance throttles anyway/check flaps and go around, but instead the RAT deployed with full loss of electric etc.

It just doesn’t make sense, and I should stop acting like I can make it otherwise. Thx.
Posted by 777Tiger
Member since Mar 2011
92390 posts
Posted on 6/15/25 at 10:38 am to
quote:

the RAT deployed


that’s the biggest clue right there, at this point, unlikely to have a total hydraulic failure at that point (787 is pretty much an electric jet,) it has a gazillion generators, so loss of both engines seems to be the only thing to kick out the RAT at that phase of flight
Posted by Lsut81
Member since Jun 2005
85125 posts
Posted on 6/15/25 at 10:48 am to
quote:

loss of both engines


Assuming if that is the case that its a maintenance issue and not something inherently wrong with the plane due to the dozen of years without incident?

I know they recovered the data recorders 2 days ago from atop a building or something, so hopefully have some sort of confirmation here shortly.
Posted by jmh5724
Member since Jan 2012
2843 posts
Posted on 6/15/25 at 10:55 am to
It just seems highly coincidental that they had sufficient thrust the entire way down the runway to reach Vr speed and then lost both engines immediately after takeoff.
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