- Everything indicates that it is a suicide. That one of the pilots deliberately cut off the fuel supply at the very moment when the plane was most sensitive, right after takeoff - Grosbongart told"Spiegel".

Indian investigators have published a preliminary report on the accident,"Welt" reports. According to the report, one pilot asked the other why he had shut off the fuel supply. The other replied that he had not done so.

Not long after, the engines lost power and the plane began to rapidly lose altitude. Shortly afterwards, the fuel supply switches were turned back on.

Engines shut down within one second

Although the engines partially regained power, one of the pilots had already sent out a call for help. When asked by the control tower what was happening, there was no answer.

Flight controllers saw the plane fall and immediately alerted emergency services. A technical error is considered highly improbable.

A preliminary report states that the two fuel controls for both engines were moved from the "run" position to the "off" position, one second after the other, a few seconds after takeoff.

Humanly speaking, only one of the two pilots in the cockpit could do that. Which of the pilots was able to turn off the regulators is still unknown.

Grosbongart thinks that inadvertent tripping of the regulator has been ruled out as a possibility.

The plane took off on June 12 for London from the Indian city of Ahmedabad, and all but one of the 242 passengers on the plane died in the crash.

Of the 242 people who were on the plane, only one survived.