CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins83% CONFIDENCEOverall confidence: 83%How well the pin's source and references back up its dates.Weighted average of how firmly 4 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
Musee de l'Air: "The 001 reached Mach 1 on 1 October 1969 and Mach 2 on 4 November 1970"; the Ecole Polytechnique[2] profile of Turcat says he "piloted Concorde's first supersonic flight on October 1 of the same year".Concorde prototype 001, flown by chief test pilot Andre Turcat, passed Mach 1 on 1 October 1969, the western supersonic airliner programme's first flight beyond the speed of sound.
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