‘AI 171 Dreamliner engines got a cutoff after 3 seconds of fuel supply lift, the aircraft crashed 29 seconds’: AAIB Initial Report. Bharat News

New Delhi: New Delhi: Preliminary investigation into the AI 171 accident has revealed that fuel supply to both engines of Air India Boeing 787 operated as AI 171, three seconds after airbourne from Ahmedabad on June 12. The fan of the engine began to fall and the aircraft weighed 213.4 tonnes – which was close to its maximum weight with 54,200 kg of jet fuel – began to lose height before crossing the circumference wall of the airport. Reason: London-bound Dreamliner’s engine 1 and 2 fuel cutoff switches were infected with “run” to “cutoff” with a second interval of a second time. How and why this happened is not yet known. But what it has done: The pilots released the “May Day” call 26 seconds after airborn and the accident occurred within six seconds. Both pilots were surprised by unexpected fuel cutoff. The report prepared by the Aircraft Accident Investigation Bureau (AAIB) said, “One of the pilots is heard asking why he did the cutoff. The other pilot replied that he did not do so.”As a result, the fan rotation speed (N1 and N2) of the engine also began to decrease as the sick aircraft weighed 2,13,401 kg, more than a maximum weight of 2,18,18,183 kg. “The aircraft obtained a maximum recorded aircraft of 180 knots, indicating air speed at approximately 08:08:42 UTC (Greenwich Time) and immediately after, the engine 1 and engine 2 fuel cutoff switch was infected with a run -after -one run with a time interval of a second time. The report stated that the engine N1 and N2 (fan rotation speed of different stages) began to decrease from their take-off values as the fuel supply to the engine was cut off.The aircraft’s “Ram Air Turbine” (RAT) was deployed during the initial climb immediately after the lift-off, as the “both engines’ pass down at a minimum passive speed,” N2 (fan rotation speed) values pass down at a minimum passive speed, “. No significant bird activity was observed in the area around the flight path. The aircraft began to lose height before crossing the wall of the airport circumference.Ten seconds later (08:08:52 UTC) switchs the fuel cutoff of the engine for an engine, which re -starts the fuel supply, to run from the cutoff. The same happened for another engine after four seconds. The engine 1 “began to progress to recover” to achieve it with other re -introsusing fuel. However, by then it was too late. Nine seconds later (08:09:05), the pilots sent “May day”. “Air Traffic Controller (replied) .. did not get any response … saw the aircraft crashed outside the airport boundary, activated the emergency response. 08:14:44 On UTC, the crash fire tender left the airport premises for rescue and fire fighting.”“After the takeoff, the aircraft impressed the BJ Medical College Hostel, which is 0.9 knots (1.6 km) from the runway’s departure end … as the aircraft was losing height, it initially approached with a range of trees and a provocative chimney inside the Army Medical Corps Complex before crashed on the hostel.The AAIB report stated, “The investigation into the maintenance records showed that the throttle control module was replaced at VT-ANB (sick Dreamliner) in 2019 and 2023. However, the reason for replacement was not related to the fuel control switch. VT-ANB has no faults related to fuel control switches since 2023.On June 12 on Dreamliner, why can both engines to infection from “run” to “run” to “run”, once the ongoing investigation can be known.Without connecting it for this reason, the report stated that the US Federal Aviation Administration (FAA) issued a special airworthiness information bulletin (SAIB) in December 2018, “Regarding the possible dissolution of fuel control switch locking facility. This SAIB model 737 was released based on reports from 737 airplane operators. Directions by FAA (advertisement). Fuel control switch design, including locking feature, is the same on the model of various Boeing airplanes, which includes part number 4TL837-3D that is fitted in the B787-8 aircraft VT-Anb. According to Air India information, the suggested inspections were not done because Saib was a consultant and was not mandatory. Investigation of maintenance records revealed that the throttle control module was replaced on VT-NB in 2019 and 2023. ,Second for disaster (all time in IST): What happened?
- AI 423: 11:17 Aircraft from Delhi land in Ahmedabad as AM
- AI is back as AI 171: 1:18:38 PM to leave for London from Ahmedabad
- Aircraft starts taxi: 1:26:08 pm
- Starts closing the roll: 1:37:37 pm
- The aircraft closes: 1:38:39 pm
- Maximum speeds achieved and fuel cutoff runs from run to cut off in cutoff: 1:38:42 pm
- The main parameters of both engines start the minimum passive speed and fall hydraulic power supply under the rat: 1:38:47 pm
- The engine goes back 1 fuel cut off switch: 1:38:52 pm
- The engine 2 fuel cut off switch goes back: 1:38:56 PM
- Pilot issues
Mayde call : 1:39:05 pm - ATC answers, no response as plane accidents get no answer
- Flight data stops recording: 1:39:11 pm
Air India accepted the reportSoon after releasing the report, Air India issued a statement accepting the report. “Air India stands in solidarity with families and people affected by the AI171 accident. We mourn the loss and are fully committed to providing assistance during this difficult time. We accept the first report released by the aircraft accident investigation on 12 July 2025 on 12 July 2025.,Assuring their cooperation with investigation, it said, “Air India is working closely with stakeholders including regulators. We continue to cooperate fully with AAIB and other officials as their investigation goes on. Given the active nature of the investigation, we are unable to comment on specific details and mention all such inquiries to AAIB.”