It may take months to reach final conclusions that explain India A bloodiest plane crash In three decades.
But the New York Times analysis of photos and videos of the June 12 incident – which was reviewed with aviation safety experts, including former pilots and a collision investigator, as well as an expert in audio forensic – reveals major details about the disaster.
The analysis indicates that the plane is likely to expand the panels and slices of the wing before taking off, used a sufficient runway distance, and launched from a model point with a relatively natural rise.
Within the seconds of takeoff, the decline in landing equipment appears to have failed, and the emergency power generator is likely to be deployed.
Experts say these failures indicate that the plane could have a catastrophic loss of hydraulic, electrical or motor energy as an air.
Take off
The departure of the flight of India 171 from Ahmedabad Airport is very audited to early warning marks that may indicate that the issues have emerged before the boot. However, many experts that the Times interviewed said that the initial takeoff seemed relatively natural and that it does not seem as if the plane lacks the necessary payment of its engines on the ground.
The New York Times analysis shows CCTV footage and airline data that the position where the runway left is in line with its seven previous departures from the same runway. The times have identified the potential position of the CCTV camera and used its point of view to determine the approximate takeoff point of the plane.
I used the journey throughout the usual runway
The available gaps in the available aviation tracking data raised another question: whether the plane uses the back half of the runway, which is usually necessary to generate adequate energy to take off.
At approximately 1:34 pm local time, the plane was grabbing the departure runway, but it did not enter it, according to aviation tracking data. Five minutes later, around 1:39 pm, the mobile data shows air near the end of the runway, with no points registered between them.
Times analysis shows CCTV shots that the plane’s position on the runway when the video frame at 1:38 pm will be possible only if it retracts on the runway.
The initial path of the deadly flight in the air is somewhat typical and does not distort the previous seven flights 171 from Ahmedabad, according to historical aviation data.
“As soon as the plane becomes air, the initial climbing rate appears very normal,” said John Cox, a former airline pilot, said.
Slides and paintings are likely to be extended
The rapid descent of the plane shortly after taking off raised concerns about whether the slices and paintings on their wings are in a long take -off position. It is usually published before taking off to provide more space to create lifting.
A picture of the wreckage of the right -wing slices shows in an extended position, indicating that it has been probably extended to take off.
Signs of soot and visible burning also indicate that when the plane crashed, the slides were in an extended position.
Sean Brothniki, a former investigator of the Pilot Air Association, said that the burning marks indicate that the slides were published before the effect, or at least when the explosion occurred on the ground.
The stretching position also indicates that the panels on the back edge of the wings have been published, although no clear vision of paintings in a collision video, according to Mr. Brothniki. All Boeing 787-8 plane, such as Air India Flight 171, automatically stretches when the plates are activated by pilots.
Another indication that the slices were extended during the trip comes from a video clip from a breaking shot from the nearby surface, which shows a slight shade on the front edge of the right wing of the plane while it is landing.
While some experts have noticed that it may be very difficult to say with certainty that the slides have been extended based on video quality, they are additional evidence that they are probably – which indicates that the pilots have made some standard measures at the beginning of the trip.
The failure of the landing equipment failed to decline completely
The same video analysis reveals one of the signs of early trouble after taking off: failure to fully decline in the plane’s landing equipment again to the fuselage.
Soon after take off, the pilots usually retract the landing equipment, which is located in the virtual front wheels immediately after taking off.
Typical landing equipment after take off
While planes can fly technically with the extension of landing equipment, pilots usually retract them to reduce clouds.
In the video clip of the surface, the gear truck landing is in the front wheelback position after taking off.
Air India 171 Landing Gear after take off
The oblique position indicates that the sequence of decline in the landing was began in the cockpit as it would have been on any other take -off, but it seemed that the decline had failed in the middle of the operation.
“The landing equipment should be properly placed in order to restore the plane’s body in the plane.”
The pilots appear to have activated the sequence of declining gear of the cockpit, but they were unable to fully decline the gear, perhaps due to problems such as the electrical failure that caused the loss of hydraulic energy, Mr. Goglia said.
The emergency energy generator has been activated
If a plane like the Boeing 787-8 Dreamliner has a sudden loss of electrical, hydraulic or engine at any height, an alternative power source is automatically spread from the bottom of the planes. Known as RAM, it can also be manually activated.
The turbine does not generate enough electricity to operate all jobs on the plane, but it may provide enough power to help a plane in an emergency.
Multiple aviation experts spoke from the Times with reference to the distinctive sound allowed in the video that was filmed from the nearby surface as evidence of the possibility of its publication on the Energy Energy generator on the flight.
For more verification of this result, the Times worked with Cesar Lamchain, forensic media expert specializing in sound analysis, to compare the sound signature on the deadly flight with another example of the Dreamliner plane landing with the published turbines.
The analysis showed that the sound of the deadly trip was more than 97 percent in line with a different counterpart to spread emergency turbines.
How Air India 171 looked as it descends
The plane showed any clear deviation
There are additional indications that the plane may have seen the loss of engine power after taking off.
In general, when the aircraft lose one engine, they deviate slightly to one side before the pilot or the plane’s computer system that corrects the problem. However, this is invisible in any video available for the accident.
“Do not see any kind of reference to the asymmetric orientation. You do not see yawning, do not see the deviation of the rudder, do not see smoke, or puff the flame from any of the engines,” said Jeff Josetti, an investigator of a former accident in the Federal Aviation Administration. “All this adds to me to be a symmetrical loss of power.”
This indicates that the problems that may have caused each of the engines probably the failure of almost at the same moment – a very unusual scenario, experts said.
Possible interpretations of the coincidence of the coincidence of the fuel source pollution in both engines, or a problem caused by incorrect inputs of flying parameters before taking off.
Investigators will evaluate these possibilities and more because they reveal additional details of the plane’s black boxes in the coming days and weeks.
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