
Fuel to Air India jet engines cut off moments before crash: Probe
New Delhi (AFP) Fuel control switches to the engines of an Air India flight that crashed shortly after takeoff, killing 260 people, were moved from the "run" to the "cutoff" position moments before impact, a preliminary investigation report said early on Saturday.The report, issued by India's Aircraft Accident Investigation Bureau (AAIB), did not offer any conclusions or apportion blame for the June 12 disaster, but indicated that one pilot asked the other why he cut off fuel, and the second pilot responded that he had not.The Boeing 787-8 Dreamliner was headed from Ahmedabad in western India to London when it crashed, killing all but one of the 242 people on board as well as 19 people on the ground.In its 15-page report, the investigation bureau said that once the aircraft achieved its top recorded speed, "the Engine 1 and Engine 2 fuel cutoff switches transitioned from RUN to CUTOFF position one after another with a time gap of 01 sec"."In the cockpit voice recording, one of the pilots is heard asking the other why did he cutoff. The other pilot responded that he did not do so," it said.The aircraft quickly began to lose altitude.The switches then returned to the "RUN" position and the engines appeared to be gathering power, but "one of the pilots transmitted 'MAYDAY MAYDAY MAYDAY'", the report said.Air traffic controllers asked the pilots what was wrong, but then saw the plane crashing and called emergency personnel to the scene.
Investigation ongoing The Indian agency's report said that the US Federal Aviation Administration had issued an information bulletin in 2018 about "the potential disengagement of the fuel control switch locking feature".Though the concern was not considered an "unsafe condition" that would warrant a more serious directive, Air India told investigators it did not carry out suggested inspections as they were "advisory and not mandatory".Air India was compliant with all airworthiness directives and alert service bulletins on the aircraft, the report said.The investigations bureau said there were "no recommended actions to B787-8 and/or GE GEnx-1B engine operators and manufacturers", suggesting no technical issues with the engines (GE) or the aircraft (Boeing).The bureau said the investigation was ongoing, and that additional evidence and information has been "sought from the stakeholders".Boeing said in a statement it will "continue to support the investigation and our customer", adding "our thoughts remain" with those affected by the disaster.Air India said it was "working closely with stakeholders, including regulators.""We continue to fully cooperate with the AAIB and other authorities as their investigation progresses," it said in a statement on X.The UN's International Civil Aviation Organization (ICAO) stipulates that states heading an investigation must submit a preliminary report within 30 days of an accident.US and British air accident investigators have taken part in the probe.The plane was carrying 230 passengers -- 169 Indians, 53 British, seven Portuguese and a Canadian -- along with 12 crew members.Dozens of people on the ground were injured.One passenger miraculously survived, a British citizen who was seen walking out of the wreckage of the crash, and who has since been discharged from hospital.
Health officials in the Indian state of Gujarat initially said at least 279 people were killed, but forensic scientists reduced the figure after multiple scattered and badly burnt remains were identified.

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The National
3 days ago
- The National
Air India crash probe: What we know so far about the fatal Boeing 787 accident
A preliminary report on the investigation into the Air India flight that crashed last month has answered some questions about the fatal accident but raised many more and fuelled speculation about the cause. India's Aircraft Accident Investigation Bureau released the report on July 12, shedding some light on the tragic crash of Air India Flight AI 171. But it has also led to debate about the role of the pilots, the flow of fuel to the plane's engines and the merits of installing cockpit cameras to help aviation safety authorities in their investigations. So what do we know so far about the accident and the shockwaves it has sent through the aviation industry? What happened? The Air India aircraft – a Boeing 787-8 Dreamliner – crashed shortly after taking off from Ahmedabad Airport, in Gujarat, north-west India, on June 12. The London Gatwick-bound flight, which was carrying 230 passengers and 12 crew members, crashed into buildings of a medical college near the airport. The accident killed 260 people − all the crew, all but one of the passengers and 19 people on the ground. The aircraft, registration VT-ANB, was fitted with GE engines. What is the cause of the crash? The 15-page preliminary report released by the AAIB suggested that the aircraft's fuel control switches were turned off, cutting fuel to the engines and causing a loss of engine thrust shortly after take-off. Fuel control switches regulate fuel flow into an aircraft's engines, used by pilots to start or shut down engines on the ground or to manually shut down or restart engines, if an engine failure occurs during a flight. 'In the cockpit voice recording, one of the pilots is heard asking the other why did he cut off. The other pilot responded that he did not do so,' the report said. It did not identify which of the remarks were made by the flight's captain and which by the first officer, nor which pilot transmitted, 'Mayday, Mayday, Mayday' just before the crash. The switches had been flipped back to the run position, the report said, but the plane could not gain power quickly enough to avoid crashing. The report findings left a key question unanswered: Why and by which pilot were two fuel switches moved to a cut-off position, starving the two engines of thrust just as the plane needed the most lift. The report is based on data from the aircraft's black boxes, which combines digital flight data and cockpit voice information. Can theories by substantiated? In a statement on July 17, the AAIB said that it is 'too early to reach any definitive conclusions' about the cause of the crash. 'The investigation by the AAIB is still not complete. The final investigation report will come out with root causes and recommendations,' it said. The body urged the public and the media to refrain from 'spreading premature narratives' that risk undermining the integrity of the investigative process. It added that 'certain sections of the international media are repeatedly attempting to draw conclusions through selective and unverified reporting.' This came after media reports abounded about the role of one of the pilots in cutting the flow of fuel to the plane's engines, but these have not been substantiated by official findings. When will the final report come out? The AAIB said on July 17 that it will publish updates 'as and when required'. 'AAIB appeals to all concerned to await publication of Final Investigation Report after completion of the investigation. AAIB will also publish updates, as and when required, which have technical and public interest,' the body said in a statement, without providing a date for the final report. What have Boeing said so far? The Air India crash marks the first hull loss for Boeing's 787 widebody aircraft. Boeing has said it continues to support the investigation. The accident will be a 'stress test' for Boeing, which had made progress in rebuilding trust after a series of safety and production quality lapses, analysts have said. 'At this stage of investigation, there are no recommended actions to 787-8 and/or GE GEnx-1B engine operators and manufacturers,' according to the AAIB report. Willie Walsh, director general of the International Air Transport Association, said earlier this week that there is a 'strong argument' to install cockpit cameras that would help aviation safety authorities investigating accidents such as the Air India crash, Bloomberg reported. What has Air India done in response to the accident? India's civil aviation regulator ordered the country's airlines this week to investigate the locking feature on the fuel switches of several Boeing models. Air India's inspection of the locking feature on the fuel control switches of its existing Boeing 787 aircraft found no issues, AFP reported, citing an internal airline memo. What are other Boeing 737 and 787 operators doing? Flydubai has joined several other airlines in the Middle East in checking the cockpit fuel switches on their Boeing aircraft, following the Air India crash investigation report. Flydubai conducted 'precautionary inspections' of the fuel switches on its Boeing 737. Elsewhere in the region, Saudia said it had completed precautionary inspections on the fuel shut-off switch system across its 787 fleet and that 'all aircraft remain fully operational.' Oman Air said it has finished checks on its 787s and is completing inspections of its 737s. When will Air India resume normal flight schedules? Air India on July 15 said it had performed additional precautionary checks on its Boeing 787 aircraft and would partially restore its international flight schedule, which it had scaled back after the crash. It will resume some flight frequencies from August 1, with full restoration planned from October 1. With the partial restoration, Air India will operate more than 525 international flights per week on 63 short, long and ultra long-haul routes.


Gulf Business
3 days ago
- Gulf Business
Air India crash: What are the fuel switches at the centre of the probe?
Image credit: airindia/Instagram A cockpit recording of dialogue between the two pilots of the Read- Below are a few facts about engine fuel switches, their functions in the aircraft and their movements on the Air India flight. What are fuel switches? They are switches that regulate fuel flow into a plane's engines. They are used by pilots to start or shut down engines on the ground or to manually shut down or restart engines if an engine failure occurs during a flight. Aviation experts say a pilot would not be able to accidentally move the fuel switches that feed the engines. But if moved, the effect would be immediate, cutting off engine power. There are independent power systems and wiring for the fuel cutoff switches and the fuel valves controlled by those switches, according to US aviation safety expert John Cox. Where are the fuel switches located? The two fuel control switches on a Boeing 787, in Air India's case equipped with two GE engines, are located below the thrust levers. The switches are spring-loaded to remain in position. To change one from run to cutoff, a pilot has to first pull the switch up and then move it from run to cutoff or vice versa. There are two modes: 'CUTOFF' and 'RUN'. What happened on the fatal Air India flight? According to the flight recorder, a few seconds after takeoff, switches for both engines transitioned to 'CUTOFF' from 'RUN' one after another with a time gap of one second. As a result, the engines began to lose power. One pilot was heard on the cockpit voice recorder asking the other why he cut off the fuel. 'The other pilot responded that he did not do so,' the report said. The report did not identify which remarks were made by the flight's captain and which by the first officer. The first officer was at the controls of the 787 and asked the captain why he moved the fuel switches into a position that starved the engines of fuel and requested that he restore the fuel flow, the source briefed on U.S. officials' early assessment told Reuters. Both switches were flipped back to 'RUN', according to the preliminary report, and found in the 'RUN' position at the crash site. When fuel control switches are moved from 'CUTOFF' to 'RUN' while the aircraft is in flight, each engine's control system automatically manages a relight and thrust recovery sequence of ignition and fuel introduction, the report said. 'No sane pilot would ever turn those switches off in flight,' especially as the plane is just starting to climb, US aviation safety expert John Nance said.

The National
3 days ago
- The National
Gratitude to the UAE's emergency medical team
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