Air India Crash: US expert doubts pilot fuel cutoff claims

Air India Crash: US expert doubts pilot fuel cutoff claims
  • US expert rejects pilot error claims in Air India crash.
  • WSJ report suggested pilot deliberately cut off fuel supply.
  • Software glitch is considered a potential cause of crash.

The aftermath of the Air India flight AI 171 crash in Ahmedabad has been mired in controversy and speculation, particularly regarding the potential causes of the tragic incident that claimed the lives of 240 passengers. A recent report by a US daily, days after the Aircraft Accident Investigation Bureau (AAIB)’s preliminary report on the crash, has ignited further debate by alleging that Captain Sumeet Sabharwal deliberately caused the crash by cutting off the fuel supply to the aircraft's engines. This claim, attributed to cockpit voice recordings and unnamed sources familiar with the investigation, has been met with skepticism and outright rejection from aviation experts, including Mary Schiavo, a US aviation expert, and raised concerns from the Federation of Indian Pilots (FIP). The core of the controversy stems from the interpretation of the cockpit voice recordings (CVR) and the ambiguity surrounding the sequence of events leading up to the engine failure. The AAIB's preliminary report acknowledged that one pilot questioned the other about the fuel switch being turned off, but it did not explicitly identify who initiated the action or provide a definitive explanation for the incident. This lack of clarity has fueled speculation and allowed for varying interpretations of the available evidence. The WSJ report, which claimed that Captain Sabharwal intentionally cut off the fuel supply, cited the CVR as evidence, stating that the first officer expressed surprise and panic while the captain remained calm. The report further emphasized the close proximity in time between the switching off of fuel to both engines, suggesting a deliberate act. However, these claims have been vehemently challenged by those who argue that the available evidence is insufficient to support such a conclusion and that other potential causes, such as a software glitch, should be thoroughly investigated. The controversy is further complicated by the fact that the full transcript of the CVR has not been released publicly, leaving room for selective paraphrasing and potentially biased interpretations. Mary Schiavo, a US aviation expert, has been particularly critical of the WSJ report and its allegations of pilot error. She emphasizes the need for careful analysis of the voices, words, and sounds on the CVR, stating that there is no evidence to suggest pilot suicide or murder. She advocates for the immediate release of the full transcript of the CVR to avoid harmful paraphrasing and ensure a more accurate understanding of the events that transpired in the cockpit. Schiavo draws attention to a similar incident in 2019 involving an All Nippon Airways (ANA) flight, where the Boeing 787 aircraft experienced a similar issue with the fuel cutoff switch moving from “Run” to “Cutoff” without pilot intervention. This incident raised concerns about a potential software glitch in the Boeing 787 that could have caused the engines to shut down. Schiavo suggests that the software glitch might have led the aircraft to mistakenly believe it was on the ground, triggering the Thrust Control Malfunction Accommodation System (TCMA) to cut off the fuel supply to the engines. This alternative explanation challenges the narrative of pilot error and highlights the importance of considering other potential factors that could have contributed to the crash. The Federation of Indian Pilots (FIP) has also expressed dissatisfaction and objection to the preliminary report's interpretation and presentation, urging the public not to fall for premature conclusions. The FIP argues that the report lacks comprehensive data and relies selectively on paraphrased cockpit voice recordings to suggest pilot error, questioning the professional competence and integrity of the flight crew. The FIP emphasizes that assigning blame before a thorough, transparent, and data-driven investigation is premature and irresponsible, undermining the professionalism of highly trained crew members and causing undue distress to their families and colleagues. The Air India crash investigation is a complex and multifaceted process that requires careful consideration of all available evidence, including the CVR, flight data recorder (FDR), aircraft maintenance records, and potential software glitches. It is crucial to avoid jumping to conclusions based on incomplete or selectively interpreted information. The focus should be on conducting a thorough and transparent investigation to determine the root cause of the crash and implement appropriate safety measures to prevent similar incidents from occurring in the future. The families of the victims, the aviation community, and the public at large deserve a comprehensive and unbiased explanation of the events that led to this tragic loss of life. The investigation must be conducted with the utmost integrity and impartiality to ensure that justice is served and that the safety of air travel is continuously improved.

The ongoing debate surrounding the Air India crash underscores the challenges inherent in aviation accident investigations, particularly when dealing with complex technical issues and human factors. The interpretation of cockpit voice recordings is often a subjective process, and the absence of a complete and publicly available transcript can further exacerbate the problem. It is essential to consider the context in which the conversations took place and to avoid drawing hasty conclusions based solely on isolated statements. In addition to the CVR, the flight data recorder (FDR) provides valuable information about the aircraft's performance and systems operation in the moments leading up to the crash. Analyzing the FDR data can help investigators determine whether there were any mechanical failures or system malfunctions that could have contributed to the incident. Furthermore, a thorough review of the aircraft's maintenance records is crucial to identify any potential pre-existing conditions that might have played a role. The possibility of a software glitch, as suggested by Mary Schiavo, warrants careful consideration. Modern aircraft are equipped with sophisticated software systems that control various aspects of flight operations, and a malfunction in one of these systems could have catastrophic consequences. Investigators should examine the software code and algorithms to identify any potential bugs or vulnerabilities that could have contributed to the crash. The role of human factors in aviation accidents is also a critical area of investigation. While the WSJ report suggests that pilot error was a contributing factor, it is essential to consider the potential stressors and pressures that the flight crew may have been under. Fatigue, stress, and communication breakdowns can all contribute to errors in judgment and decision-making. Investigators should examine the crew's training records, work schedules, and communication protocols to assess whether any human factors issues might have played a role in the crash. The Air India crash investigation highlights the importance of collaboration and communication between different stakeholders, including the AAIB, the airline, the aircraft manufacturer, and aviation safety experts. Transparency and openness in the investigation process are essential to building trust and ensuring that all relevant information is considered. The families of the victims deserve to be kept informed about the progress of the investigation and to have their questions and concerns addressed. The aviation community also has a vested interest in learning from this tragedy and implementing measures to prevent similar incidents from occurring in the future. The Air India crash investigation serves as a reminder of the inherent risks associated with air travel and the importance of maintaining the highest standards of safety. Continuous improvements in aircraft technology, pilot training, and air traffic control procedures are essential to ensuring the safety of passengers and crew. The aviation industry must remain vigilant in its pursuit of safety and be proactive in identifying and addressing potential hazards.

The complexity of modern aviation accident investigations necessitates a multi-faceted approach that integrates technical expertise, human factors analysis, and a commitment to transparency. The Air India crash, shrouded in conflicting reports and interpretations, exemplifies the challenges of attributing blame and determining the root cause of such a catastrophic event. While the WSJ report pointed towards pilot error, specifically alleging that Captain Sumeet Sabharwal deliberately cut off fuel supply, this assertion has been met with strong opposition from aviation experts and the Federation of Indian Pilots, who emphasize the lack of conclusive evidence and the potential for alternative explanations, such as a software glitch. The emphasis on cockpit voice recordings as primary evidence in the WSJ report raises concerns about the potential for selective interpretation and the absence of a complete and publicly available transcript. The nuances of communication within the cockpit environment, often under immense pressure, can be easily misconstrued without a comprehensive understanding of the context. Therefore, relying solely on paraphrased segments of the CVR without considering the full range of available data presents a skewed and potentially misleading picture. Mary Schiavo's perspective, drawing on her experience as a US aviation expert, highlights the importance of considering alternative explanations, particularly the possibility of a software glitch affecting the Boeing 787's fuel control system. The ANA incident in 2019, where a similar fuel cutoff issue occurred without pilot intervention, lends credence to this possibility. Modern aircraft rely heavily on complex software systems, and any malfunction or vulnerability in these systems can have dire consequences. Thorough investigation of the software code and algorithms is crucial to rule out this potential cause. The Federation of Indian Pilots' strong objection to the preliminary report's interpretation underscores the need for a thorough, transparent, and data-driven investigation. Prematurely assigning blame based on incomplete or selectively interpreted information not only undermines the professionalism of the flight crew but also causes undue distress to their families and colleagues. A comprehensive investigation must consider all relevant factors, including the CVR, FDR, maintenance records, and potential software glitches, to arrive at an accurate and unbiased conclusion. The investigation process should be transparent and collaborative, involving all relevant stakeholders, including the AAIB, the airline, the aircraft manufacturer, and aviation safety experts. Open communication and the sharing of information are essential to building trust and ensuring that all perspectives are considered. The families of the victims deserve to be kept informed about the progress of the investigation and to have their questions and concerns addressed. The aviation industry has a responsibility to learn from this tragedy and to implement measures to prevent similar incidents from occurring in the future. This includes continuous improvements in aircraft technology, pilot training, and air traffic control procedures. The Air India crash serves as a reminder of the inherent risks associated with air travel and the importance of maintaining the highest standards of safety. The pursuit of safety must be a continuous and unwavering commitment, driven by a proactive approach to identifying and addressing potential hazards. Only through a comprehensive, transparent, and collaborative investigation can we hope to understand the true cause of this tragedy and prevent similar incidents from occurring in the future.

Source: Air India crash: Why US aviation expert rejects reports suggesting AI 171 pilot Sumeet Sabharwal cutting off fuel supply | FE Exclusive

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