Indian aviation authorities have released the preliminary report on the Air India flight 171 crash that occurred just minutes after take off from Ahmedabad airport , killing 241 of the 242 people on board. While it pinpoints the proximate cause of the Boeing crash, it leaves unresolved how that came about.
The proximate cause is that the engine fuel switch to both engines was switched to the ‘off’ position.
According to a preliminary report by India’s Aircraft Accident Investigation Bureau, moments after take-off both the switches in the cockpit that controlled fuel going to the engines had been moved to the “cut-off” position. Moving the fuel switches almost immediately cuts the engine.
…According to the report, the fuel switches were moved to cut-off “one after another”. Seconds later, the switches were moved back to turn the fuel back on and one of the plane’s engines was able to restart, but could not reverse the plane’s deceleration.