REVEALED: Fuel flow dropped to zero 14 seconds before impact — Air India 171’s black box points to a silent trigger the crew never saw coming

Air India Plane Crash Report: The CUTOFF transition, which turned off the fuel supply to the plane, could be the key piece in a complicated puzzle of what happened on the Boeing Dreamliner 787-8 on June 12.

New Delhi:A month after the Air India plane crash in Ahmedabad that killed at least 270 people, a preliminary report into the worst aviation accident in India in decades showed the engines’ fuel switches shifted from ‘RUN’ to ‘CUTOFF’ within seconds of each other after take-off. The 15-page report was published early Saturday by the Aircraft Accident Investigation Bureau (AAIB), which is probing the crash.

“Why did you cut off?” one of the pilots was heard asking the other in the cockpit voice recording. The other pilot responded that he did not do so.

The CUTOFF transition, which turned off the fuel supply to the plane, could be the key piece in a complicated puzzle of what happened on the Boeing Dreamliner 787-8 on June 12.

Moments later, switches of both engines of the London-bound plane were transitioned from CUTOFF to RUN, indicating the pilots tried to salvage the situation, as per data from Enhanced Airborne Flight Recorders (EAFR). The 787 Dreamliner and other commercial planes have more than enough power to complete a takeoff on a single engine, and pilots are well-prepared for that event.

‘I Didn’t Cut Off Fuel’: Last Chat Of Pilots On Air India Plane That Crashed

Air India Plane Crash Report: The CUTOFF transition, which turned off the fuel supply to the plane, could be the key piece in a complicated puzzle of what happened on the Boeing Dreamliner 787-8 on June 12.

“Why did you cut off?” one of the pilots was heard asking the other in the cockpit voice recording. The other pilot responded that he did not do so.

The CUTOFF transition, which turned off the fuel supply to the plane, could be the key piece in a complicated puzzle of what happened on the Boeing Dreamliner 787-8 on June 12.

“When fuel control switches are moved from CUTOFF to RUN while the aircraft is in flight, each engine’s full authority dual engine control (FADEC) automatically manages a relight and thrust recovery sequence of ignition and fuel introduction,” said the report. (Key Takeaways From The Report here)

The EAFR recording, however, stopped seconds later. Soon after, one of the pilots transmitted a MAYDAY alert. The Air Traffic Control enquired about the call sign. It did not get any response, but it then saw the aircraft crashing outside the airport boundary.

The aircraft, fully loaded with fuel, quickly lost altitude and slammed into a hostel for medical students, where it exploded, killing all but one of the 242 individuals on board and around 30 people on the ground. It was airborne for only 32 seconds.

‘I Didn’t Cut Off Fuel’: Last Chat Of Pilots On Air India Plane That Crashed

Air India Plane Crash Report: The CUTOFF transition, which turned off the fuel supply to the plane, could be the key piece in a complicated puzzle of what happened on the Boeing Dreamliner 787-8 on June 12.

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“Why did you cut off?” one of the pilots was heard asking the other in the cockpit voice recording. The other pilot responded that he did not do so.

The CUTOFF transition, which turned off the fuel supply to the plane, could be the key piece in a complicated puzzle of what happened on the Boeing Dreamliner 787-8 on June 12.

The aircraft was piloted by Captain Sumeet Sabharwal, a Line Training Captain with 8,200 hours of flying experience, assisted by First Officer Clive Kundar, who had logged 1,100 flying hours. The report said both pilots were medically fit and rested, with adequate experience.

It said that there was no immediate evidence of sabotage, but pointed to a known Federal Aviation Administration (FAA) advisory on a possible fuel switch flaw. It issued an information bulletin based on reports from operators of Model 737 aeroplanes that the fuel control switches were installed with the locking feature disengaged. “The concern was not considered an unsafe condition,” it said.

The report mentioned that the Ram Air Turbine (RAT) was deployed immediately after lift-off, as was seen on the CCTV footage from the airport. RAT is deployed when there is a dual-engine failure or total electronic or hydraulic failure.

“No significant bird activity is observed in the vicinity of the flight path. The aircraft started to lose altitude before crossing the airport perimeter wall,” said the report.

In the 1980s, a Delta Air Lines Inc pilot mistakenly cut off fuel to the engines of the Boeing 767 he was flying. But in that case, he was able to restart them because the aircraft was higher in the sky, avoiding a disaster.

REVEALED: Fuel flow dropped to zero 14 seconds bef...

REVEALED: Fuel flow dropped to zero 14 seconds before impact — Air India 171’s black box points to a silent trigger the crew never saw coming

Air India Plane Crash Report: The CUTOFF transition, which turned off the fuel supply to the plane, could be the key piece in a complicated puzzle of what happened on the Boeing Dreamliner 787-8 on June 12.

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