NASA's X-59 Returns to Base After Premature Landing During Envelope Expansion Testing

NASA’s X-59 quiet supersonic demonstrator was cut short on its second test flight after a return-to-base call. The aircraft landed safely at Edwards Air Force Base in California. The X-59 was expected to start envelope expansion testing, but the flight was terminated prematurely. NASA has not yet released details on what triggered the return-to-base call. The X-59 is part of NASA’s Quesst mission, which aims to demonstrate that a supersonic aircraft can fly faster than sound while reducing the sonic boom to a quieter ’thump’. The aircraft was piloted by test pilot Jim ‘Clue’ Less and accompanied by an F/A-18 chase aircraft. The X-59 first flew on October 28, 2025, and underwent extensive post-flight maintenance and inspections after its maiden flight. NASA will provide more information on the incident in the future.