Last Updated: February 14, 2026
On June 12, 2025, Air India Flight 171, a Boeing 787-8 Dreamliner, crashed shortly after takeoff from Ahmedabad, India, killing 260 people and leaving only one survivor. This marked the first fatal accident involving a Boeing 787 since the aircraft entered service in 2011 and became the deadliest plane crash of the 2020s. Eight months later, the investigation remains active, with significant disagreements between international investigators over the probable cause.
The Crash: Key Facts
Date and Time: June 12, 2025, at 13:39 IST (8:09 AM UTC)
Flight: Air India Flight 171, scheduled service from Ahmedabad (AMD) to London Gatwick (LGW)
Aircraft: Boeing 787-8 Dreamliner, registration VT-ANL
Timeline: The aircraft crashed just 32-40 seconds after takeoff, approximately 1.7 kilometers from the runway
Impact Location: The aircraft struck the hostel block of B.J. Medical College in Ahmedabad
Casualties: 260 fatalities—241 people on board (17 crew members and 224 passengers) plus 19 people on the ground. Only one passenger survived.
Flight Crew
Captain: Sumeet Sabharwal, age 56, with approximately 15,600 total flight hours, including 8,600 hours on the Boeing 787
First Officer: Clive Kunder, age 32, with approximately 3,400 total flight hours, including 1,100 hours on the Boeing 787
Investigation Status
The investigation is being led by India’s Aircraft Accident Investigation Bureau (AAIB), with participation from the U.S. National Transportation Safety Board (NTSB), Boeing, and the Federal Aviation Administration (FAA). A preliminary report was released on July 12, 2025—one month after the crash—but the final report has not yet been published as of February 2026.
Key Preliminary Findings
The preliminary report revealed critical information: both engine fuel control switches were moved from the RUN position to the CUTOFF position approximately three seconds after liftoff, one second apart. This action cut fuel supply to both engines during the critical takeoff phase, causing immediate loss of power.
Data from the Flight Data Recorder (FDR) and Cockpit Voice Recorder (CVR) showed that both switches moved in rapid succession, leading to dual engine failure within seconds of becoming airborne. The aircraft was unable to maintain altitude or safely return to the airport.
The Central Controversy: Deliberate Action vs. Technical Failure
The investigation has become highly contentious, with a significant rift between American and Indian investigators over the probable cause.
U.S. Investigators’ Position
In late November 2025, The Wall Street Journal reported that American government and industry officials believe the evidence suggests the captain deliberately crashed the aircraft. This assessment is based on:
• The precise timing and sequence of both fuel control switches being moved to CUTOFF
• The lack of any distress calls or attempts to troubleshoot the problem
• Flight data indicating the switches were manually moved, not the result of electrical malfunction
U.S. officials have expressed frustration with what they perceive as reluctance by Indian authorities to fully examine this possibility.
Alternative Technical Failure Theories
Other investigators and aviation experts have proposed technical explanations for the fuel control switch movements:
Water Leak Theory: Aviation attorney Mike Andrews suggested that water infiltration could have caused electrical failures affecting the fuel control system. This theory points to documented water leak issues on the aircraft.
Core Network Degradation: Some experts believe that degradation in the aircraft’s core network systems could have caused multiple cascading failures, including uncommanded fuel switch movements.
Pre-existing Electrical Faults: The aircraft had documented maintenance issues, including a hard landing on its previous sector that required replacement of the stabilizer motor trim system. Some investigators believe unresolved electrical problems may have contributed to the crash.
Aircraft Maintenance History
VT-ANL had experienced several technical issues in the months leading up to the crash:
• Multiple documented water leaks in critical electrical compartments
• A hard landing on the previous flight sector requiring stabilizer motor trim system replacement
• Recurring electrical anomalies that were logged but not fully resolved
These maintenance records have become a focal point for investigators exploring technical failure scenarios.
Fleet-Wide Safety Response
Following the crash, Air India and the Directorate General of Civil Aviation (DGCA) implemented extensive safety measures:
Aircraft Groundings
Air India grounded three Boeing 787-8 aircraft (VT-ANA, VT-ANE, and VT-ANG) for extended inspections of fuel control systems, electrical wiring, and core network components. These aircraft underwent comprehensive technical reviews before being returned to service.
Operational Suspensions
The airline suspended 83 wide-body flights for six weeks to conduct thorough safety inspections across its entire long-haul fleet. This represented one of the most comprehensive voluntary safety reviews in Indian aviation history.
Enhanced Regulatory Oversight
The DGCA implemented enhanced inspection directives for all Boeing 787 operators in India, including:
• Mandatory fuel control system inspections
• Electrical wiring integrity checks
• Review of maintenance records for water leak incidents
• Coordination with Boeing and international aviation authorities
Boeing 787 Dreamliner Background
The Boeing 787 Dreamliner is a wide-body, twin-engine jet featuring advanced technology:
• Fly-by-wire flight control systems
• Fully digital cockpit displays and controls
• Advanced Full Authority Digital Engine Control (FADEC) systems
• Multiple redundant safety layers designed to prevent single-point failures
The aircraft entered commercial service in 2011 and had maintained an exceptional safety record until this incident. The 787’s fuel control system includes multiple safeguards designed to prevent uncommanded engine shutdowns, which is why the simultaneous movement of both fuel control switches to CUTOFF has generated such intense scrutiny.
Historical Significance
This crash represents several tragic milestones:
• First fatal accident involving a Boeing 787 Dreamliner since the type entered service in 2011
• First hull loss of a Boeing 787
• Deadliest aviation accident of the 2020s
The loss of the 787’s previously unblemished fatal accident record has had significant implications for the aviation industry and public confidence in the aircraft type.
Compensation and Legal Matters
Families of crash victims have been engaged in compensation discussions with Air India. These proceedings are governed by:
• The Montreal Convention, which establishes liability frameworks for international air travel
• Airline liability assessments based on the investigation’s findings
• Insurance coordination between multiple parties
Legal matters remain separate from the technical investigation, though the final determination of probable cause will significantly impact liability assessments and compensation amounts.
Why Aircraft Investigations Take Time
Aviation accident investigations, particularly those involving modern wide-body aircraft, are complex processes that require months or even years to complete:
Data Volume: Modern aircraft like the 787 generate thousands of parameters per second. Analysts must review, correlate, and validate this enormous dataset.
Component Forensics: Engine parts, fuel systems, electrical components, and control switches undergo microscopic examination for wear patterns, failure modes, or malfunction indicators.
Human Factors Analysis: Crew training records, simulator performance, work schedules, fatigue factors, medical histories, and cockpit procedures must be carefully reviewed.
International Coordination: Aircraft manufacturers, engine manufacturers, equipment suppliers, and global aviation regulators collaborate during investigations. For a globally-operated aircraft like the 787, findings could have worldwide safety implications.
What Has NOT Been Confirmed
Despite extensive media coverage and online speculation, the following remain unconfirmed:
• No official determination of deliberate pilot action
• No confirmed mechanical or electrical system failure
• No final accident cause determination
• No public release of the final AAIB investigation report
In aviation accident protocol, conclusions are only released after extensive technical validation, peer review, and cross-verification with manufacturers and international regulators.
Expected Investigation Timeline
A typical major aviation accident investigation follows this timeline:
• Preliminary factual report (released July 12, 2025)
• Interim safety recommendations (issued if urgent safety concerns are identified)
• Final accident report with probable cause (typically 12-24 months after the accident)
• Safety directives or design recommendations (if applicable)
Given the complexity and controversy surrounding this investigation, the final report may take longer than typical timeframes.
Aviation Safety Perspective
Commercial aviation remains one of the safest forms of transportation globally. When accidents occur, they lead to systematic improvements:
• Aircraft design enhancements
• Maintenance protocol updates
• Regulatory framework amendments
• Pilot training and human factors improvements
Even precautionary findings strengthen safety frameworks. The aviation industry’s commitment to continuous improvement has made modern commercial flight extraordinarily safe, and investigations like this one contribute to that ongoing safety evolution.
Conclusion
Eight months after Air India Flight 171 crashed on takeoff from Ahmedabad, the investigation continues with significant disagreements between international authorities. The preliminary report confirmed that both fuel control switches moved to CUTOFF shortly after takeoff, but whether this resulted from deliberate action, mechanical failure, or electrical malfunction remains disputed.
Key points:
• The crash killed 260 people, making it the deadliest aviation accident of the 2020s and the first fatal crash of a Boeing 787
• A preliminary report was released in July 2025, but the final report has not yet been published
• U.S. investigators believe evidence points to deliberate action, while others explore technical failure theories
• Air India grounded three Boeing 787s and suspended 83 flights for comprehensive safety reviews
• The investigation remains active with no official determination of probable cause
Until the Aircraft Accident Investigation Bureau releases its final report, any claims about definitive causes remain speculative. Aviation professionals, industry observers, and the families of victims await the official findings that will provide answers and, potentially, drive future safety improvements across the global aviation industry.
Q: What caused the Air India Boeing 787 crash?
A: The official investigation is ongoing and no final cause has been confirmed.
Q: Is the Boeing 787 safe to fly?
A: Yes, regulatory authorities continue to monitor safety and no fleet-wide grounding has been ordered.
Q: What is a fuel control switch in aircraft?
A: It controls engine fuel flow and is part of the cockpit engine management system.
By Aeropeep Team
