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Quiet supersonic X-59 jet soars over California desert in first test flight

NASA's X-59 jet flew its first test flight at subsonic speeds to demonstrate technology that could enable quiet supersonic travel over land, overcoming noise restrictions since 1973.

  • At 10:13 a.m. EDT, the X-59 took off from Plant 42 in Palmdale and landed near Armstrong, completing its first flight, according to Lockheed's Skunk Works.
  • Funded with more than $518 million, the X-59 was designed to fly faster than sound without producing loud sonic booms, and program data will inform new noise thresholds.
  • Flying oval-shaped racetrack patterns over Edwards Air Force Base, the single-engine X-59, just under 100 feet , reached 230 mph and a peak altitude of 12,000 feet .
  • NASA will continue to lead the X-59's initial test campaign, and the jet will reside at NASA's Armstrong Flight Research Center for sound and community testing in the coming months.
  • Successful tests position the X-59 to influence rules governing supersonic flights, as if it proves quiet, commercial supersonic flight over land could benefit disaster relief and medical transport.
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Lockheed Martin broke the news in on Tuesday, October 28, 2025.
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