Even then the big plane would be traveling at better than 150 knots.

But the plane could not travel too slowly, lest it drop to the ground.

He estimated that the plane was travelling 100 miles per hour on impact.

The plane was traveling at 227 miles per hour when it flew into the ground.

"The plane was traveling 500 miles an hour," he said.

Henry saw the river appear again after the plane had traveled 180 degrees.

The plane traveled undetected toward Washington for 36 minutes, the report found.

The plane will travel relative to the air in which it is flying.

The plane was traveling approximately one and a half miles each 12 seconds.

Such a plane would travel at five times the speed of sound, or nearly 4,000 miles an hour.