By early 1952 the Dash 80 was designed and Boeing's managers allowed it to be made.
The Dash 80 was made at Boeing's Renton factory.

The Dash 80 was finished on May 15, 1954, which was 18 months after the making started.

Some problems were found with the engines and brakes.
The brakes once completely failed when the plane landed, so it went over the runway.
By early 1952 the Dash 80 was designed and Boeing's managers allowed it to be made. The Dash 80 was made at Boeing's Renton factory.
The Dash 80 was finished on May 15, 1954, which was 18 months after the making started.
Some problems were found with the engines and brakes. The brakes once completely failed when the plane landed, so it went over the runway.
Boeing 367-80