According to sources, this important information has been extracted from the recording of the black box that the control tower repeatedly told the pilot that he is heading to a wrong direction. The pilot, in reply to the control tower, said that he can see the hills.
The CAA investigation report, based on the recording of black box, further reveals that the co-pilot also repeatedly asked very loudly to pilot to take the plane up, but it was very late before he could had done it.
On July 28, an aero plane of a private air line, Air Blue, crashed into the hills of Margalla in Islamabad claiming lives of 152 passengers including the crew of the plane.