Boeing 737 MAX 8 airliner completes its first flight last year. The plane maker says if airlines place orders for its planned MAX 10X, it could start building them in 2020. Stephen Brashear / AFP
Boeing 737 MAX 8 airliner completes its first flight last year. The plane maker says if airlines place orders for its planned MAX 10X, it could start building them in 2020. Stephen Brashear / AFP
The US plane maker has the longest version of its MAX family yet on the drawing board but says actual production of the MAX 10X will only start once airlines commit to buying it.