After the first 707 was made in 1957, the Dash 80 was changed into a test planes for other things.
It tested things for the new Boeing 727.
To do this, another engine was put in at the back.
After the first 707 was made in 1957, the Dash 80 was changed into a test planes for other things. It tested things for the new Boeing 727. To do this, another engine was put in at the back.
Boeing 367-80