79 Years Later, Chuck Yeager's Famous Radio Call Still Captures The First Supersonic Flight

The most famous radio call from the first supersonic flight did not sound like a celebration. As Chuck Yeager pushed the Bell XS-1 beyond Mach 1 on October 14, 1947, the pilot did not announce that he had just achieved one of aviation's defining milestones. Instead, he told engineer Jack Ridley that something seemed wrong with his instrument: “This Machmeter is all screwy.” The understated message captured just how unexpectedly uneventful the transition through the sound barrier had been, as reported by the Air Force Test Center history of the first supersonic flight.

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