
Deliberate human intervention is the reason for the accident: Capt Mohan Ranganathan
"The preliminary report by the Aircraft Accidents Investigation Bureau (AAIB), an independent investigative unit. constituted by the Civil Aviation Ministry, reveal a conversation between the cockpit crew with one of them expressing shock over the fuel supply being cut-off to the engines and questioning the other.
The report states, "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," The co-pilot Clive Kunder was flying the plane during take-off and he had 1000-plus hours of flying. The highly experienced First Officer Captain Sumit Sabharwal, with more than 8,000 hours of flying was in the cockpit with him.
Capt Ranganathan states, "The fuel switch does not change automatically. It needs to be moved physically from one slot to another slot and can only be done as a deliberate action."
This switch to stop fuel supply is provided as an emergency measure so that pilots can salvage the situation in case of any major fire related incidents, he explained.
"This is a case of deliberate human intervention. It was not accidental," he stressed.
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India Gazette
37 minutes ago
- India Gazette
"Pilots did everything right": Captain Umang N Jani on AI 171's crash report
Ahmedabad (Gujarat) [India], July 12 (ANI): Captain Umang N Jani, Head of Department (HoD) Aviation at Indus University, on Saturday said that the pilots of the crashed Boeing 787-8 Air India flight 171 did 'everything right' by attempting to restart the engines. He said that the preliminary report by the Aircraft Accident Investigation Bureau (AAIB) mentions that the fuel switch was at the 'run' position. 'The pilot did everything right. It is part of the training that when engines fail, you attempt to restart them. The report also suggests that the fuel switch is in the run position. This aircraft has an FADEC (Full Authority Digital Engine Control) system in place. When you start the engine, there is a complete sequence that needs to be followed, and this system automatically follows this entire sequence,' Captain Jani told ANI. He informed that the engines stop working when the fuel supply stops, which makes such types of incidents possible. He said that the fuel switch is situated on the throttle quadrant in the aircraft, which was found to be in the 'run' position, indicating that the pilot tried to restart the engine. 'It mentions fuel cutoff. When the fuel supply stops, both engines stop working, and then the type of incident that happened is possible. If I talk about the throttle quadrant, there is a fuel cutoff switch here. In the crash, it has been found that the fuel switch was in the 'run' position. It seems that the pilot tried to restart the engine. This process of whether to supply fuel to the engine is controlled manually from the cockpit,' Jani added. 'Generally, the fuel switch is not put on cutoff after takeoff. This is done in two situations: normal and emergency. You put the switch on cutoff once the aircraft has landed and parked during normal times,' he stated. The Captain said that further investigation was required into the flight crash. 'This is a preliminary report. Now, there may be further investigation and the final report that will come, it is possible that we may get to see more information and more details in it,' Jani said. The AAIB's Preliminary Report, released on Friday, said that both the engines of the aircraft were moved from 'run' to 'cutoff' in quick succession, which resulted in the fuel supply being cut off. The report says that in the cockpit voice recording, one of the pilots is heard asking the other why he did the cutoff, which the other pilot denied ever doing so. 'The aircraft achieved the maximum recorded airspeed of 180 Knots IAS at about 08:08:42 UTC, and immediately thereafter, 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. The Engine N1 and N2 began to decrease from their take-off values as the fuel supply to the engines was cut off,' the preliminary report said. 'In the cockpit voice recording, one of the pilots is heard asking the other why he cut off. The other pilot responded that he did not do so,' the report added. As per the Enhanced Airborne Flight Recorder (EAFR) accessed by the AAIB, engine 1's fuel cut switch transitioned from 'cutoff' to 'run' at about 8:08:52 UTC (Coordinated Universal Time), and at 8:08:56 UTC, Engine 2's fuel switch also went from 'cutoff' to run'. According to the report, just 13 seconds later, at 8:09:05 UTC, one of the pilots transmitted the Mayday call, which the Air Traffic Control Officer (ATCO) enquired about, but did not receive a reply. Shortly after, the aircraft was observed crashing outside the airport boundary, and the emergency response was activated. The Airline Pilots' Association of India on Saturday also called for a 'fair, fact-based inquiry,' into the incident and rejected the 'tone and direction of the investigation' which suggested a bias towards pilot error. 'The report was leaked to the media without any responsible official signature or attribution. There is a lack of transparency in investigations as investigations continue to be shrouded in secrecy, undermining credibility and public trust. Qualified, experienced personnel, especially line pilots, are still not being included in the investigation team,' the association said in a statement. Notably, Minister of State for Civil Aviation Murlidhar Mohol urged people not to draw conclusions based on the preliminary report. While speaking to mediapersons, the MoS said, 'The AAIB has brought out a preliminary report. This is not the final report. Until the final report comes out, we should not arrive at any conclusion. AAIB is an autonomous authority, and the ministry does not interfere in their work.' (ANI)


India Gazette
37 minutes ago
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"Cryptic in many ways": Expert Mark D Martin on Air India crash preliminary report
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Time of India
an hour ago
- Time of India
Air India crash findings raise more questions than answers
The preliminary report on the Air India flight 171 crash reveals that both engine fuel control switches were deliberately shut off shortly after takeoff. Experts are baffled, noting the switches require intentional action and standard procedures dictate shutting down only a failed engine. Tired of too many ads? Remove Ads Tired of too many ads? Remove Ads ( Originally published on Jul 12, 2025 ) The preliminary report into the Air India flight 171 crash confirmed that both engine fuel control switches were moved to the cut-off position shortly after takeoff, but it left the key question as to why this happened unanswered, said experts."I'm very surprised and disheartened to learn about the movement of the fuel control switches," said Capt. John Cox, veteran pilot and safety analyst. "There is more investigative work to do, a lot more, but I think that we know what happened. Now the focus becomes why."As per standard protocol, the Aircraft Accident Investigation Bureau 's (AAIB) preliminary report did not offer any analysis or conclusions, which will figure in the final report. According to the cockpit voice recorder , one pilot asked why did the other shut off the fuel control switches. The other replied that he didn't. The report did not clarify which pilot said said that the switches are designed to prevent accidental activation. "You have to deliberately lift them and move them. It wouldn't be something that could vibrate out of position. That is by design," he said. "There's a lot of evidence pointing to these switches being moved by a person." "In all my 55 years in aviation, I can think of only one other case I'm aware of where something like that happened," he added, referring to a 1987 Delta Air Lines 767 incident. The crew accidentally moved both switches but managed to restart the engines and land Soucie, former Federal Aviation Administration safety inspector and author of 'Why Planes Crash', called the Air India crash "highly irregular and without precedent". He said that pilots are trained to identify the failed engine and shut down only that one using a checklist."In this case, both cutoffs were pulled in rapid succession, with no verbal coordination or checklist discipline, which raises serious concerns," he said. "From a procedural standpoint, the only justification for such action would be if both engines had already failed or were on fire. That was clearly not the case."Soucie said he was initially inclined to believe the action wasn't intentional. "But the timing and manner of the shutdown are not consistent with standard pilot training . Either the pilot didn't understand what the switches do, or the action was made without deliberate cognitive intent. Both are deeply troubling," he Amit Singh, founder of the Safety Matters Foundation, pointed to a potential discrepancy in the timeline.