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Air India flight with 242 onboard crashes near Ahmedabad airport

4.7K views 162 replies 26 participants last post by  Rigel  
#1 ·
#104 ·
Germanwings Flight 9525: On 24 March 2015, the aircraft, an Airbus A320-211, crashed 100 km (62 mi; 54 nmi) north-west of Nice in the French Alps, killing all 150 people on board.
. This is from Wikipedia.

I believe that was widely accepted as Suicide.

I thought that Malaysian Flight 370 was never found and the fate unknown. I recollect some debris which may have been from that flight on a diserted Island.
 
#106 · (Edited)
I reached out to two recently retired airline pilots and a Flight surgeon / Psychiatrist. No requirement for psychological profiling on regular basis. There is some psycholgogical profiling during the hiring process howeer. The Physical exam for pilots, includes that the pilot is psychologically fit, but no specific testing. My flight surgeon / psychiatrist friend refered me to This article "Mental Health Support Challenges for Pilots" The essence is that pilots are susposed to self report any mental illness. If they do, then they are grounded. End of career.

The other item pointed out by both pilots is that shutting off the fuel is not all that simple. There is a detent which the switch has to be passed over, so it is not a simple "on and off". with the fuel flow switches, as pointed out by "Ajole".. The fastest way is to pull the emergency handle if there is fire in that engiene-that immediately shuts down the fuel, hyraulics and electical power to that engine. They both felt that restarting the engines at that altitude was impossible. If the cause was fuel lines cut off, that doomed the flight immediately. They were both a little scheptical about the pilot accidently having shut off fuel. It was designed that just a cuff or bracelet caught could not throw the switches.

Also they pointed out that after the German Flight crashed as a result of sucide into the French Alps, there had to be two people on the flight deck at all times. Another crew member will be asked to be in the cockpit if one of the flight officers leaves to go the the bathroom etc.....This is to prevent an act of sucide as in the German plane.
 
#107 ·
It would not have been hard to restart the engine at that ALTITUDE, air is heavier( more oxygen) near the surface. However the velocity may have precluded ( and the FDR supports this) a windmill start. With both engines out you would need air from the APU.

The 2 crew member in the flight deck requirements varies by country, but is usually explained ( today) as a mitigation if the flight deck door jams. If the pilot shut down the enines, are you really under the illusion a flight attendant could restart them… or over power the pilot. Several accidents, likely including this one, weren't correctable with another pilot in the seat. JAL had a FO and flight engineer in the cockpit, The Egypt Air wasn’t correctable in cruse with the caption quickly returning to the seat ( though the FO instrduced multiple problems.) I’ve seen two ASRS reports on door jamming, one was solved with a crash axe, the other plane landed with the pilot in a first class seat, so it’s a real thing.
 
#108 ·
A human moved the fuel cutoff back to run 10 and 14 seconds after they were turned off . The FADC automatically started the restart procedure when the engine was set back to run. Since the FADC was operating both engines, there is no reason to assume they didn’t stay in the run position.
Correct. I heard a report that said they were found in the shut off position, but everything today is showing exactly as you said. They were shut off, and then someone put them both back into “run”, within two seconds of each other, but they ran out of time for any thrust to come on.


It would not have been hard to restart the engine at that ALTITUDE, air is heavier( more oxygen) near the surface. However the velocity may have precluded ( and the FDR supports this) a windmill start. With both engines out you would need air from the APU.
The APU supplies power, not air.
The only thing that provides air, is the front half of the engine.

The velocity, the altitude or air density has nothing to do with a restart, it simply takes time to spin up, build pressure, and start generating thrust, no matter where in the air column you are located.
So no, the FDR doesn’t support that. The only thing the velocity and altitude had to do with it, was they didn’t have enough of either to give them the time required for the restart to begin generating thrust prior to crashing.

Especially since the engines had to cycle through or overcome their shutdown cycle. From what I read, one engine was coming back online, the other didn’t quite make it into actual restart, and neither one was producing enough thrust to help.
 
#109 ·
Correct. I heard a report that said they were found in the shut off position, but everything today is showing exactly as you said. They were shut off, and then someone put them both back into “run”, within two seconds of each other, but they ran out of time for any thrust to come on.




The APU supplies power, not air.
The only thing that provides air, is the front half of the engine.

The velocity, the altitude or air density has nothing to do with a restart, it simply takes time to spin up, build pressure, and start generating thrust, no matter where in the air column you are located.
So no, the FDR doesn’t support that. The only thing the velocity and altitude had to do with it, was they didn’t have enough of either to give them the time required for the restart to begin generating thrust prior to crashing.

Especially since the engines had to cycle through or overcome their shutdown cycle. From what I read, one engine was coming back online, the other didn’t quite make it into actual restart, and neither one was producing enough thrust to help.
Boeing says you are correct about the 787 not using bleed air, but it is common for many passengers jets, including the 737. The compressed air is there, it’s just a matter of routing it to the engines. But either bleed air or an electrical start requires the APU to spin up first.

A number of engines can be restarted by a windmill start if there is insufficient mass flow rate ( a function of density and velocity). Just ask Francis Gray Powers or the yahoo CRJ pilots who flamed out at 41,000’ what happened when they tried without sufficient density or velocity. In many aircraft, a windmill start is the only option to recover from a dual/ total engine failure t altitude ( many APUs not being rated for use at altitude.)
 
#112 ·
the captain was suffering from Vitamin B12 deficiency as well in addition to being treated for depression.
That would describe most of India, thanks to their vegan diets.

Now the real work starts for the Indian govt... how to discredit the American investigators and blame Boeing for everything.

Not easy.
 
#117 ·
Last week, India's Aircraft Accident Investigation Bureau (AAIB), the lead investigator, stated in a release that "certain sections of the international media are repeatedly attempting to draw conclusions through selective and unverified reporting". It described these "actions [as] irresponsible, especially while the investigation remains ongoing".

....the Indian Commercial Pilots' Association condemned the rush to blame the crew as "reckless" and "deeply insensitive".....

:rolleyes:

 
#121 ·
One would need to use a hammer and cold chisel to damage the switch detents in order to permit them to be accidentally moved from run to cutoff. Understanding the Boeing 787 Fuel Control Switch: Function, Operation, and Safety Mechanisms

"Can the Fuel Control Switch Be Moved Accidentally?
From a design and operational safety perspective, accidental movement of the fuel control switch is highly unlikely, due to several factors:

  1. Physical Design:
    • The switch is guarded and requires deliberate manual action to change positions.
    • It has a firm detent mechanism that prevents casual movement due to turbulence or vibration."
 
#134 ·
A former NTSB investigator saying that the AAIB is now investigating the crash as a criminal event.
It should be noted that the AAIB has NOT confirmed that it’s going ahead with a criminal investigation.


Air India 787 Crash Being Investigated As ‘Criminal Act,’ Says Safety Expert

LAS VEGAS—India’s Aircraft Accident Investigation Bureau (AAIB) is now looking into the June 12 crash of an Air India Boeing 787-8 as an intentional act, says veteran safety consultant and former NTSB investigator Greg Feith. ………….
Speaking at the American Institute of Aeronautics and Astronautics Aviation forum here in Las Vegas, Feith says: “Something had to prompt that type of comment. Now we get into the psychology part of it, and that's really where this investigation is going to go.
“And oh, by the way, it's no longer an accident. It's investigated as a criminal event, just like EgyptAir, just like Germanwings, just like SilkAir. These are criminal events—intentional acts,” he adds, referring to three fatal crashes deemed to have been deliberately caused which occurred in 1999, 2015 and 1997 respectively.



 
#139 ·
I sometimes watch this "Deshbhakt" ('patriot' in Hindi)... he is slightly more informed than most of them....

Anyway... 9 minutes 10 seconds. Click on CC for English subs.

 
#142 ·
The speaker seem to overlook that fack that the FCO switches are mechanical - no software or other automated system involved.

Now - as to pilot "error" or mistake vs deliberate will be the deciding factor.

I'll wait for the final report.
 
#145 ·
#147 ·
I seem to recall reading a couple of weeks ago a report that said investigators had a recording of a cockpit conversation in which the co-pilot reportedly said, "The fuel is shut off to the engines, how did that happen?" The same report said that the pilot had been having mental health issues, including severe depression.

If correct, that would support the theory that the pilot was suicidal, decided to take some people with him, and intentionally cut the fuel to the engines.

Which to me, would be a mass murder.

If correct.
 
#148 ·

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I enjoy a good curry, but after watching this documentary, I disposed of everything from India.
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I worked with certified H-B1 computer 'technicians' who had zero experience finding the 'ON' button.
To them, the mysteries of coding or programming were the equivalent of talking Martian to somebody from Alpha Centuri.
I hesitate to suggest all Air India crew, pilots, engineers, and mechanics bought their credentials on-line, but if the culture holds...
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Dehydration is a severe health crisis.
According to reports, the flight crew were stuck in the glass green-house cock-pit for hours with zero AC.
I can easily imagine 130°f/55°c at 80% humidity and sweating kilos of electrolytes.
But perhaps they were acclimated to that temperature and humidity range.
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Boxed in a locked cock-pit green-house, I can easily imagine 160°f/71°c and 100% humidity.
Would electronic components corrode to failure?
Hard to say.
 
#159 ·
:rolleyes:


The lawsuit filed Tuesday, and seen by the BBC, said faulty fuel switches caused the accident and accused the companies of doing "nothing" despite being aware of the risks of the aircraft's design.
 
#162 ·
And as I predicted .....


The (supreme) court said it was "irresponsible" for the aviation authority to suggest, through leaks to the media, that pilot error had caused the disaster.

The court said the way the aviation body released its preliminary report in to the Boeing Dreamliner's crash was "selective and piecemeal".

..... one of India's Supreme Court judges said that suggestions that the pilots deliberately shut off fuel supply were "very unfortunate and irresponsible".