According to the report obtained by CNN, the control switches in the cockpit of the Boeing 787 Dreamliner had been flipped, resulting in engine problems.

The aircraft had reached an airspeed of 180 knots when both engines’ fuel cutoff switches were “transitioned from RUN to CUTOFF position one after another with a time gap of 01 sec,” per the report.

“In the cockpit voice recording, one of the pilots is heard asking the other why did he cutoff. The other pilot responded that he did not do so,” the report reads.

In addition to those on board, a number of people on the ground were killed when the plane crashed into the BJ Medical College and Hospital hostel.

The Air India flight, AI171, took off from Ahmedabad’s Sardar Vallabhbhai Patel International Airport in India’s western state of Gujarat on June 12.

The Boeing 787-8 Dreamliner was headed to London Gatwick, and scheduled to land at 6.25pm local time.

Air India had said 242 passengers and crew members were on board. That included 169 Indian nationals, 53 Britons, seven Portuguese and one Canadian.