An investigator said that the cockpit was left by one of the pilots of the crashed Germanwings airplane throughout the flight from Barcelona at some point to Dusseldorf and got locked out. Evidence comes from voice recorder, which captured “very smooth, very cool” dialogue involving the pilots on the day of the flight. The guy outside is knocking lightly on the door and there is no answer,” the investigator said. “And then he hits the door stronger and no answer. There is never an answer.” “You can hear he is trying to smash the door down.” Investigators haven’t determined whether it was the primary officer who left the cockpit or the pilot. “If the pilots did not stop the airplane from flying into the mountains, it is because they were unconscious or dead, or they had decided to die, or they were forced to die,” an air travel export told AFP. The airplane crashed killing crew members and all 150 passengers .