The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Happened as dated, per en.wikipedia.org: "On December 15, 2009, Boeing conducted the 787-8 maiden flight from Paine Field in Everett, Washington, at 10:27 am PST."
Confirms the 15 December 2009 three-hour first flight and names the crew, 787 chief pilot Mike Carriker and Captain Randy Neville, whom the source[1] article does not.
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