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It’s been a chilling day. The preliminary report into the June 12 crash of Air India Flight AI‑171—a Boeing 787 Dreamliner that plunged shortly after taking off from Ahmedabad—opens a window into a tragedy both technical and emotional.
Seconds after lift-off, at around 08:08:42 UTC, the engines were screaming at 180 knots—right when both fuel-control switches flipped from RUN to CUTOFF, one after the other, barely a second apart. Instantly, both engines began losing thrust. The cockpit voice recorder captured one pilot shaking, “Why did you cut off fuel?” — a response came, “I didn’t.” There was panic. The crew tried to switch fuel back to RUN, and the plane’s automatic systems tried to relight the engines. Engine 1 partially recovered, but Engine 2 could not arrest its descent despite repeated attempts. A MAYDAY call echoed over the radio around 08:09:05, and just six seconds later, data stopped. The plane crashed less than a mile from the runway, into a medical college hostel. Only one passenger survived; 260 people died (241 onboard, 19 on ground).
Investigators found no mechanical issue, no bird strike, and calm weather. The aircraft was within weight limits, maintained properly, and both pilots were experienced and rested. The fuel-switch design requires deliberate action to change—making accidental flips extremely unlikely. An FAA advisory in 2018 warned about possible disengagement of the switch lock—but it wasn’t mandatory. Air India didn’t act on that advisory, though ELTs, RAT deployment, and black box recovery proceeded as expected. The final cause remains a mystery, though now narrowed to why and how those switches moved.
Time of accident: ~32 seconds after takeoff
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What happened:
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Engines running at 180 knots
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Fuel cutoff switches moved RUN → CUTOFF (1-second gap)
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Both engines lost thrust; Engine 1 relit, Engine 2 failed
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RAT (emergency turbine) deployed
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MAYDAY called; flight data ended seconds later
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Outcome: Crashed into buildings; 1 survivor, ~260 dead
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Mechanics: No technical defect; switch movement seems manual or unknown
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Air India: Cooperating; no mandatory safety changes recommended yet
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Investigation: Ongoing with DGCA, AAIB, aircraft makers (Boeing/GE), NTSB support
What We Know So Far — Key Facts at a Glance:
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Flight: Air India AI-171, Boeing 787 Dreamliner
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Route: Ahmedabad (India) → London (UK)
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Crash Time: Within 30 seconds of takeoff
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Fatalities: 241 onboard + 19 on the ground
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Survivors: Only 1 passenger
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Cause: Both fuel control switches were set to CUTOFF mid-air
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Pilot Confusion: Cockpit recording captured surprise and panic
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MAYDAY call issued just before crash
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No engine or system failure detected
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Investigation ongoing – final report awaited
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First fatal accident involving a Boeing 787
Expert Takes on the AI‑171 Preliminary Report
As the aviation community digests the preliminary findings from the Air India AI‑171 crash, several experts are speaking out:
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Neil Hansford, an aviation consultant, was stunned — having led nine airlines worldwide, he says it’s almost impossible a pilot would deliberately cut fuel to both engines so soon after takeoff. With over 15,000 flying hours between the two pilots, Hansford suggests investigators must explore potential intention or deeper context, including psychological stress or intent. Wikipedia+9News.com.au+9@mathrubhumi+9India TV News+4Outlook Business+4ETTravelWorld.com+4
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Mark Martin from an aviation safety firm in Gurugram questioned why cockpit cameras weren’t referenced in the report. He pointed out that the preliminary findings offered no clear explanation for why the switches were moved, and cautioned that we must await the full report before drawing conclusions. Financial Times
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Sumeet Sabharwal and Clive Kunder, the flight crew, were experienced and well-rested. Aviation experts like John Cox stated that the fuel switches cannot move accidentally — they require deliberate mechanical force. News.com.au+3The Financial Express+3Financial Times+3
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In aviation commentary, Captain Steve and others flagged possible issues beyond engines — such as landing gear not retracting or flap settings being wrong — that could mimic a loss of lift even if thrust remains. Those scenarios are under debate and are being tested in simulations. India Today+2telegraphindia.com+2reddit.com+2
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Experts from the Aeronautical Society of India and former pilots highlight that systemic factors — like pilot fatigue, maintenance quality, automation complexity, and growing pressure on Indian aviation infrastructure — need inclusion in the final investigation. These aren’t isolated technical issues but a complex web of human and systemic vulnerabilities. @mathrubhumi
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