CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins77% CONFIDENCEOverall confidence: 77%How well the pin's source and references back up its dates.Weighted average of how firmly 5 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
AeroCorner[1]: "Aeroflot opened Tu-144 passenger service on Nov. 1, 1977, between Moscow and Alma-Ata"; Yesterday's Airlines: "real passenger service didn't start until November 1, 1977 flying between Moscow and Alma Ata".Aeroflot began passenger flights with the Tu-144 on 1 November 1977 on the 3,100 km Moscow to Alma-Ata route; the service lasted until 1 June 1978, 55 passenger flights in all.
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