The incident occurred around 7 am when it was raining heavily, leading to the closure of the airport for more than
two hours.
Civil Aviation Minister Praful Patel said in Delhi that preliminary information suggested that the pilot did not apply full brakes to avoid skidding off the wet runway.
He said the pliot had estimated that the plane would come to a halt before the end of the runway. "It did so but nose-wheel went out of the runway by a few feet.
Passengers were taken to the terminal building and put on board in another Boeing 767-400, which took off at 12.05 pm with a total of 408 passengers and crew on board for Chicago via Frankfurt, AI spokesman Jitender Bhargav said.
"The imobilised plane has been pulled out in a record time of 90 minutes and towed to the hangar," he said.
Terrible Tuesday: Mumbai copes with a calamity