According to Airports Authority of India (AAI) officials, the coach hit the left wing of the Jet aircraft at about 5 p.m., after smashing into a mounted ladder nearby. “We are medically examining the driver of the coach. As of now, he has said that he lost concentration,” an AAI official said, adding that the coach was travelling at the speed of 50 km per hour against the prescribed speed limit of 20 km per hour.