Boeing Puts NASA X-66 Plan On Ice As Future X-Plane Fears Grow

Concept of X-66 flying above clouds

When the X-66 launched in 2023, Boeing outlined a possible “Vision System” family of McDonnell Douglas MD-90-based transonic truss-braced-wing narrowbodies, with the smaller version to seat 130-160 passengers.

Credit: Boeing
Boeing’s unilateral move to put the brakes on its X-66 Sustainable Flight Demonstrator for NASA raises more questions than answers about both the company’s future aircraft development plans and the agency’s troubled X-Plane series. Until Boeing announced on April 24 that it would put the X-66 on ice...
Guy Norris

Guy is a Senior Editor for Aviation Week, covering technology and propulsion. He is based in Colorado Springs.

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