Boeing, NASA Hit Pause on X-66 Jet in Bold Move to Focus on Core Programs

On 24 April 2025, Boeing announced a pause of the X-66 Sustainable Flight Demonstrator (SFD) program. Boeing and NASA have collaborated since 2023 on the $1.5 billion SFD, also called the X-66. NASA reported it was planning a full-scale demonstrator flight in 2027. Despite the stop to the program, Boeing stated it would continue working […]

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