The co-pilot of an Indian airliner sent it into a terrifying dive after he knocked the control column forward while adjusting his seat.

The captain was using the toilet when his colleague sent the plane hurtling downwards.

The panicked co-pilot couldn’t regain control and was unable to let the captain back into the cockpit.

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Fortunately the captain had an override code for the cockpit and managed to wrestle the controls from the co-pilot of the Air Indian Express Boeing 737.

The 113 passengers on the May 26 flight from Dubai to Pune were frightened and shouting, according to reports.

India's Directorate General of Civil Aviation determined that the plane quickly banked and went into steep dive that ended up exceeding maximum safe flying speed.

The co-pilot, who had less than 1000 hours of experience on Boeing 737s, told investigators he was too stressed to respond to repeated calls from the cabin over the plane's intercom to open the cockpit door for the captain.