Preliminary Boeing accident report 787 Air India

preliminary report Aereo Boeing 787-8 Air India Ahmedabad Gatwick VT-ANB AAIB DREAMLINER RESEARCH FLIGHT AEROLINEA SAFETY AREA CAUSE CAUSE

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India published the Preliminary report of the plane crash Boeing 787 from Air India taking off from Ahmedabad airport to Gatwick. Foto aaib

The 12 June 2025, a Boeing 787-8 Air India, With VT-ANB registration, The Ai171 flight from Ahmedabad to Gatwick, crashed in Ahmedabad shortly after takeoff at 08:09 UTC (13:39 IS). The first details are being known.

The Government of India, together with the Ministry of Civil Aviation and the Air Accident Investigation Bureau of the India made public the long-awaited and necessary preliminary report of the high-profile plane crash in Boeing 787 Dreamliner In Ahmedabad, The details are very interesting, although there are still doubts that will be resolved in the final report.

Preliminary Boeing accident report 787 Air India

The 12 June 2025, a boeing 787-8 Air India, With VT-ANB registration , The Ai171 flight from Ahmedabad to Gatwick , crashed in Ahmedabad shortly after takeoff at 08:09 UTC (13:39 IS). The Aircraft Accident Investigation Bureau (Aaib) of the Government of India has issued a preliminary report on this tragic event. This document presents the facts and initial evidence collected during the investigation, emphasizing that the information is preliminary and subject to change , with the sole objective of preventing future accidents and not of assigning blame.

Accident details:

  • Date and time: 12 June 2025, 08:09 UTC (13:39 IS)
  • Location: Ahmedabad
  • Operator: Air India
  • Aircraft: Boeing 787-8
  • Aircraft serial number: 36279
  • Registration: VT-anb
  • Flight number: Ai171
  • Damage to the Aircraft: The aircraft was destroyed due to the impact with buildings on the ground and the subsequent fire. A total of five buildings suffered major structural damage and fire damage.
  • Victims:
    • Crew: 12 (Fatal)
    • passengers: 229 (Fatal), 1 (Grave)
  • Others: 19 (Fatal), 67 (Minors/none)

Summary of the flight

the boeing 787-8, VT-anb, arrived at Ahmedabad airport as flight AI423 from Delhi and parked at position 34. An entry was made in the Pilot Defect Report (PDR) by the status message “STAB POS XDCR”, and the aircraft was released for flight after resolution of problems at 06:40 UTC. The aircraft was scheduled to operate the Ai171 flight from Ahmedabad to Gatwick. The crew, Composed of a pilot in command (PIC) with ATPP license and a CPL license co -pilot , along with ten members of the cabin crew , had an adequate rest period. The co -pilot was the pilot in command (PF), And the PIC was the supervisor pilot (PM) For flight. On board they were traveling 230 passengers, including two babies. The takeoff weight of 213.401 Kgs was within the allowed limits. The aircraft began taxiing from the position 34 at 07:56:08 UTC , and received clearance to take off from the runway 23 at 08:07:33 UTC. The aircraft began taxiing at 08:07:37 UTC.

Preliminary research findings

Based on enhanced flight recorder data (EAFR), the aircraft reached takeoff decision speed V1 (153 kts IAS) at 08:08:33 UTC and VR speed (155 kts) at 08:08:35 UTC. Air/aircraft earth sensors went to air mode, which agrees with the takeoff to the 08:08:39 UTC. The aircraft reached the maximum recorded speed of 180 knots around 08:08:42 UTC. Immediately after, Motor fuel cut switches 1 and 2 they went from the «RUN» position to the «CUTOFF» position with one second difference , which caused a decrease in the N1 and N2 values ​​of the engines since the fuel supply was cut off.

In the cockpit voice recording, one of the pilots is heard asking why the fuel was cut off, and the other pilot replied that he had not done it. CCTV footage obtained from the airport showed that the impact air turbine (RAT) deployed during initial climb immediately after takeoff. The aircraft began to lose altitude before crossing the airport perimeter wall.. At 08:09:05 UTC, one of the pilots transmitted a "MAYDAY" call. ATC received no response, but he observed that the aircraft crashed outside the airport boundary and activated the emergency response.

Ongoing research areas

The investigation continues and the data downloaded from the forward EAFR is being analyzed in detail. Activities have been completed at the scene of the accident, including drone photography and videography, and the remains have been moved to a secure area near the airport. Both engines were recovered from the accident and quarantine place in an airport hangar. Components of interest have been identified and quarantined for additional testing.. The fuel samples taken from the tank trucks and tanks used to replace the aircraft were analyzed in the DGCA laboratory and were satisfactory.

Very limited fuel samples were obtained from the APU filter and left wing refueling/dump valve. Statements of witnesses and surviving passenger have been obtained. A full analysis of crew and passenger autopsy reports is underway to corroborate aeromedical findings with engineering judgment.. Additional details are being gathered based on initial clues.

At this stage of the investigation, No actions have been recommended for operators and manufacturers of B787-8 and/or ge genx-1b engines. The investigation team will review and examine evidence, additional records and information being requested from interested parties.

As you can see, There is nothing definitive, So you have to wait for the final report. You can read the full document here: https://aaib.gov.in/What’s New Assets/Preliminary Report VT-ANB.pdf

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