In almost every airplane flight you'll take, a dinging sound will be ... tells them that take-off clearance has been given, and to be seated. The second, when the plane has reached 10,000 feet ...

A commuter plane that fell from the sky as it flew over Alaska’s Norton Sound last month was more ... plane a little less than an hour after take-off, and it was reported “overdue” by ...

Following a few more ground tests, it will fly over numerous cities around the country. NASA will ask people on the ground if ...