New evidence suggests the Air India Flight 171 crash could have been the result of human error or that the fuel cut-off switches were deliberately triggered by one of the pilots.
A preliminary report by India's Aircraft Accident Investigation Bureau has revealed that the fuel supply to both engines was cut off as the plane was taking off. Seconds later the switches were turned back on, but it was too late to stop the aircraft from crashing.
AI171, which took off from Ahmedabad heading for London, crashed less than a minute into the flight, killing all but one of the 242 people on board and 19 on the ground, making it the world's worst air disaster in a decade.
What did the commentators say? The findings reveal the "fundamental reason why the jet crashed, but much remains unexplained", said CNN. The report does "not make clear how the fuel switches were flipped to the cut-off position during the flight, whether it was deliberate, accidental or if a technical fault was responsible".
Experts point out that on Boeing 787 Dreamliners the fuel switches must be pulled up to unlock them before flipping and they are protected by brackets to prevent accidental activation. A safety feature "dating back to the 1950s", these lever-lock switches are "highly reliable", said the BBC.
A key clue comes from the cockpit voice recording. One pilot asks: "Why did you cut off?" referring to the fuel supply switch. The other replies: "I did not do so."
The captain, 56-year-old Sumeet Sabharwal, was "nearing the end of an impeccable career", with more than 15,000 flying hours, said The Times. His co-pilot, 32-year-old Clive Kunder, was "much nearer the start of his career". Both were "well-rested".
"Deliberate, malicious intent from either pilot would appear unthinkable given the record of the Air India officers in the cockpit," said The Guardian. "Switching off by mistake would also seem incredible. And yet human error cannot be excluded."
What next? Analysis of the full cockpit voice recorder "holds the key to this puzzle", said the BBC. With pilot mics, radio calls and ambient sounds, plus a full transcript, investigators hope to establish who was in control when the switches were flipped. A full report is expected in 12 months. |