ESTIMATEDDate confidence: ESTIMATEDA target, not a fixed dateHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all ESTIMATED pins60% CONFIDENCEOverall confidence: 60%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 from 50% to 74% confidence
Ingeniøren (10 Sep 2007): SAS "i starten af februar 2000 satte det første af sine dengang spritnye propelfly ... i drift mellem København og Århus" (early February 2000); exact day not stated.[1]SAS put the first of its new Dash 8 Q400 turboprops into service between Copenhagen and Aarhus in early February 2000, the first airline in the world to fly the type commercially.
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