Engine fuel supply was cut just before Air India jet crash, preliminary report says

TL;DR

Fuel cutoff switch error led to Air India crash killing 260.

Transcript

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Key Insights

• The Air India crash was caused by fuel cutoff switches being flipped, leading to engine failure and the crash.
• The preliminary report does not conclusively determine if the fuel switches were manually or accidentally flipped.
• A cockpit conversation revealed pilots were unaware of how the fuel switches were turned off.
• The positioning of the fuel switches in the cockpit makes accidental activation unlikely, suggesting a manual action.
• Past incidents have shown similar switch errors, but they were recoverable due to higher altitudes.
• There is speculation about potential pilot error due to fatigue or delirium, given the extreme heat conditions on the day.
• The investigation rules out electronic malfunction, emphasizing the physical nature of the switch activation.
• Further investigation is needed to explore the pilots' conditions and any other potential factors contributing to the crash.

Questions & Answers

Q: What caused the Air India crash according to the preliminary report?

The preliminary report indicates that the Air India crash was caused by the fuel cutoff switches being flipped, which starved the engines of fuel, leading to engine failure and the subsequent crash. The report does not conclusively determine whether the switches were flipped manually or accidentally.

Q: What did the cockpit voice recorder reveal about the pilots' awareness?

The cockpit voice recorder captured a conversation between the pilots indicating that they were unaware of how the fuel switches were turned off. This conversation suggests that the pilots did not intentionally flip the switches, raising questions about how the switches were activated.

Q: How likely is it that the fuel switches were accidentally flipped?

The report suggests that accidental activation of the fuel switches is unlikely due to their specific positioning and design in the cockpit, which requires a deliberate manual action to flip them. This design is intended to prevent accidental activation during flight.

Q: Have there been similar incidents in aviation history?

Yes, there have been similar incidents where fuel switches were inadvertently flipped, such as in 1987 with a 767 aircraft. However, those incidents occurred at higher altitudes, allowing pilots to recover. In this case, the low altitude made recovery impossible.

Q: What factors are being considered in the ongoing investigation?

The ongoing investigation is considering factors such as pilot error potentially due to fatigue or delirium, given the extreme heat conditions on the day of the crash. Investigators are also examining the pilots' conditions and any other potential contributing factors.

Q: Could an electronic malfunction have caused the fuel switches to flip?

The investigation has ruled out electronic malfunction as a cause for the fuel switches flipping. The switches require a physical, manual action to be activated, and there is no evidence of any electronic failure contributing to the incident.

Q: What are experts speculating about the pilots' actions?

Experts are speculating that the extreme heat conditions on the day of the crash may have affected the pilots' mental state, potentially causing delirium or fatigue. This speculation is based on the absence of standard communication between the pilots before the switches were flipped.

Q: What further actions are needed to conclude the investigation?

Further actions needed include a thorough examination of the pilots' health and mental state, as well as any other environmental or operational factors that could have contributed to the crash. Investigators aim to determine whether the switches were flipped intentionally or due to other causes.

Summary & Key Takeaways

• A preliminary report attributes the Air India crash to fuel cutoff switches being flipped, causing engine failure. While the report does not specify whether the switches were flipped manually or accidentally, it highlights the importance of further investigation to determine the cause.

• The cockpit voice recorder captured a conversation indicating that pilots were unaware of how the fuel switches were turned off. The report suggests that the positioning of these switches makes accidental activation unlikely, pointing towards a manual action.

• Experts speculate about potential pilot error due to fatigue or delirium, given the extreme heat conditions on the day of the crash. The investigation rules out electronic malfunction, emphasizing the need for further exploration into the pilots' conditions and any other contributing factors.