Posts by user "Icarus2001" [Posts: 42 Total up-votes: 96 Pages: 3]

Icarus2001
2025-06-12T13:53:00
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Post: 11899230
I think it unlikely that the AC was in a (full) stall.
​​​​​​​You do understand that the B787 is FBW right? You understand what that means..

Subjects: FBW

Icarus2001
2025-06-13T00:38:00
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Post: 11899871
The AC wasn't working while at the gate on the previous leg, so it may be that they APU was broken. Been on several filghts where this has occurred, so the APU presumably isn't on the MEL.
That is the opposite of how an MEL works. Is it school holidays?

Subjects: APU  MEL

7 users liked this post.

Icarus2001
2025-06-13T00:48:00
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Post: 11899876
TO does seem to be very late in the takeoff role
Priceless. Take off is ALWAYS at the end of the TO ROLL, so yes, very late.

Subjects: None

9 users liked this post.

Icarus2001
2025-06-13T02:07:00
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Post: 11899926
Originally Posted by jpsingh
This aircraft was being positioned to AHD for its onward flight to LGW . The inflight Entertainment system would be locked up for the domestic leg from DEL - AHD route. Strange that it locked the Flight attendant call switch as well !
Why would it be “locked up”?

What relevance does that have to the crash?

Last edited by Senior Pilot; 13th Jun 2025 at 02:19 . Reason: Quote

Subjects: None

Icarus2001
2025-06-13T05:11:00
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Post: 11900006
An engine failure just off the runway after V1 in a fully loaded 787-8 in high ambient temperatures would assuredly have a crew thinking about a "toute suite" shutdown of a misbehaving donk
No, no, no and again no.

This is a transport category aircraft. It will happily climb on one engine to a safe altitude where procedures are followed.

There is zero evidence of any engine "failures" or shutdowns by the crew.

However the gear is still down at around 500' agl.

Subjects: Engine Failure (All)  Gear Retraction  V1

3 users liked this post.

Icarus2001
2025-06-13T07:14:00
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Post: 11900094
Generally, how long after retrieval of a Flight Data Recorder and a Cockpit Voice Recorder, can timeline data of aircraft airspeed / altitude / thrust / configuration / recordings etc, be revealed to the public?
That would depend on where the game of spin the bottle of liability lands.

Most authorities aim for an initial report within thirty days.

If it is an aircraft fault, Air India will leak details as soon as they have them.

If the data points to "whoops wrong lever" expect a dragging of feet and much wailing and gnashing of teeth from Air India.

Subjects: None

8 users liked this post.

Icarus2001
2025-06-13T07:50:00
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Post: 11900127
Every Boeing (and Airbus) twin plus the 747-8 has a RAT -.
The Boeing 717?
The Boeing 737?
The Airbus 220?

​​​​​​​ Is there a reason the setting should not default after a landing to ‘Input required’?
​​​​​​​Yes, yes there is. Because it is SOP to set the cleared altitude when receiving the airways clearance, on the bay or PDC. It is then covered in the departure briefing. Stop trying to reinvent the wheel.

Subjects: RAT (All)

1 user liked this post.

Icarus2001
2025-06-13T11:55:00
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Post: 11900413
The big thing to watch over the next 24 hours is whether Boeing or any B787 operators ground the fleet.

This act, or lack of this occurring will speak volumes.

Subjects: None

8 users liked this post.

Icarus2001
2025-06-14T05:46:00
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Post: 11901148
I see that the India DGCA has gone in early with some narrative guidance and also some corporate bum steel plating.

DGCA requires inspections on all B787 aircraft before they leave India, various disparate systems, even so far as the cabin pressurisation system. Yep, that would cause a crash a minute after take off.

They are carefully showing that they are DOING something even if it is mostly meaningless and more importantly they are sowing the seeds of doubt in the aircraft. This accident could not possibly be due to the action or inaction of DGCA licenced pilots.

Strong move.

Subjects: DGCA

1 user liked this post.

Icarus2001
2025-06-14T14:38:00
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Post: 11901538
I am seeing a discussion of what occurred after the aircraft left the runway rather what may have occurred before the aircraft left the runway.
That is because the take off roll and initial climb looks normal. Things go pear shaped at about the time the gear should be retracting.

Subjects: None

Icarus2001
2025-06-15T05:02:00
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Post: 11902106
I am sure that if there is any reason to suspect that a systems failure may have been a probable cause, or even contributed in any way to the accident, Boeing, GE, the FAA, or the Indian DGAC will promptly advise 787 operators.
The longer the regulators remain silent, the greater the probability that this has been caused by an operational error...
​​​​​​​ indeed, Occam\x92s razor and all that. If there was a serious design flaw, I highly doubt the fleet would still be operational. It has already been 3 days.
No evidence of engine failure

No evidence of RAT deployment from a poor image.

No evidence of electrical failure.

The teams of lawyers in the UK representing 53 grieving families will be working over the weekend to sign up said families to a class action.

​​​​​​​This is going to get messy.
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Subjects: Electrical Failure  Engine Failure (All)  FAA  RAT (All)  RAT (Deployment)

Icarus2001
2025-06-15T05:37:00
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Post: 11902119
No evidence of RAT deployment from a poor image - There absolutely is, you're not following fully I'm afraid. There's a brilliant video by Juan Brown where he compares the sound of the plane passing with that of an American 787 on final with the RAT deployed. Identical sound
Dont be afraid. I am following along. There is no evidence. Can you vouch for the authenticity of the audio recording? I cannot see a RAT in that image only a blur.

I tell you what I am watching closely, the words and subtle meaning in the press conference of Civil Aviation Minister, Shri Ram Mohan Naidu, who has set up a “special high level committee” to oversee the investigation of this “incident.

A little odd given they have the DGCA and AAIB in place, dont you think?

He indicates they are to report within three months.

It is now 48 hours since the EAFR was recovered. A small group of people know the answer NOW.

Subjects: AAIB (All)  DGCA  EAFR  RAT (All)  RAT (Deployment)

6 users liked this post.

Icarus2001
2025-06-15T06:31:00
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Post: 11902144
I guess it all depends on what you mean!

If the fuel supplies were cut off, causing the engines to stop, is that engine failure ? I'd say not, nothing wrong with the engines until they impacted the buildings etc.

No evidence of RAT deployment - but you're specifically restricting "the evidence" to a blurry amateur video. That alone is not great evidence, but why does that video exist at all? When they lift the relevant section of fuselage, RAT deployment or not is going to be fairly apparent. And Circumstantial evidence is still evidence, no?

No evidence of electrical failure? Do you know that from the downloaded Flight Data?
A thrust reduction is not an engine failure. Engine shutdown due to an action of crew (or inaction) is not a failure.

There is no evidence of an electrical failure. What evidence? A surviving passenger thought he saw flickering lights? Give me a break.

The word evidence in English has a very specific meaning.

Look for the simplest explanation here and then ask why the worldwide B787 fleet is still flying with no urgent inspection requirements from Boeing or GE. Think about that "evidence".

Subjects: Electrical Failure  Engine Failure (All)  Engine Shutdown  Fuel (All)  Fuel Cutoff  RAT (All)  RAT (Deployment)

6 users liked this post.

Icarus2001
2025-06-15T07:06:00
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Post: 11902171
If the aircraft had flaps deployed (the crash site photos look like it), flight controls working (no indications they weren't), and the thrust levers pushed full forwards, there is very very little that will cause it to sink other than lack of thrust.
Brilliant, now what is your point? Are you suggesting a double engine failure, a roll back to idle thrust or an incorrectly set AAI causing VNAV level off and a thrust reduction. You can only choose one.

For the team pointing to the RAT out as a failure indicator, it could have been deployed by the crew after the initial reduction in climb performance. I am not convinced it is deployed but it really does not make a convincing argument for any type of failure.

For the children on holiday, yes I fly transport category jets, current on two types.
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Subjects: Dual Engine Failure  Engine Failure (All)  RAT (All)  VNAV

Icarus2001
2025-06-15T07:57:00
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Post: 11902205
The better quality video does show something. It certainly could be the RAT. Automatic or manual deployment?
Assuming GE receive data from these engines in flight, a massive failure would prompt a swift communication from GE. Or a massive electrical issue could put Boeing on edge and also prompt urgent inspections on their aircraft.
Since here we are two days after the EAFR was found then either both the aircraft manufacturer and the engine manufacturer know they are off the hook. That can only be for one of two reasons. They know there was a maintenance issue with this aircraft ( no IFE and call buttons?) or they know it was a handling error.
Of course, tonight we may get urgent bulletins from Boeing or GE but the longer that does not happen, as Bloggs wisely stated, then we are left with a grim reality. Send in the clowns.

Subjects: EAFR  Electrical Failure  RAT (All)

5 users liked this post.

Icarus2001
2025-06-15T13:25:00
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Post: 11902471
I don't see how they'd be able to say so with confidence after just a few days. Surely they'd need to review logs, do some lab analysis, etc for that?
Nope. I think they will know by now what happened, they may not know the why but they will already be able to see what was going on as well as hear the CVR.

​​​​​​​The rest is now narrative management, damage control and pass the liability parcel.

Subjects: CVR

4 users liked this post.

Icarus2001
2025-06-15T13:42:00
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Post: 11902480
Could it be that "No power" may have meant the whole cockpit went dark? ie. A total electrical failure, initiating RAT deployment and apu autostart. Doesn't explain loss of thrust explicitly but if there was a massive electrical issue, and critical data was lost (thinking air/ground switch position and other fundamentals), would dual engine shutdown be a possibility? Simultaneous FADEC failure? Exceptionally remote possibility perhaps, but by definition these accidents are exceptionally remote. Over to the experts on this.
No please read above.

The engines will just keep running despite total electrical failure.

FADEC units are self powered and independent.

Even a completely “dark” flight deck still has the ISIS.

Subjects: Dual Engine Failure  Electrical Failure  Engine Failure (All)  Engine Shutdown  FADEC  RAT (All)  RAT (Deployment)

3 users liked this post.

Icarus2001
2025-06-16T00:29:00
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Post: 11903005
AFAIK the 787 DFDRs have an internal battery but if the power is off to the rest of the aeroplane, what data, if any, is going to make its way to the units?
You answered your own question. The units would have had power. One pilot made a radio call so electrical power was available at the very least at emergency level.

It has been established that the B787 utilises a EAFR, a combined CVR and DFDR.

Subjects: CVR  DFDR  EAFR  Mayday

1 user liked this post.

Icarus2001
2025-06-16T09:02:00
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Post: 11903285
Why would there be any word from Boeing or GE?
Because the EAFR has been out of the aircraft for three days now. A small group of people know what happened but perhaps not why.

If Boeing or GE had any inkling that their product killed around 270 people they would quickly order inspection of the offending item or system or quickly amend a procedure. The fact they have not done this is illuminating.

Subjects: EAFR

4 users liked this post.

Icarus2001
2025-06-16T09:11:00
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Post: 11903294
In summary I remain baffled by this tragic accident
A good summary, perhaps leave it there instead of constructing highly unlikely scenarios that are in the realm of fantasy from a handful of data points.

Subjects: None

5 users liked this post.