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.
Boeing's own October 12, 2011 press release announced the delivery of the first 747-8 Freighter to Cargolux.
Wikipedia's Boeing 747-8 article covers the 747-8F launch (14 November 2005), first flight (8 February 2010), 5.575 m stretch, GEnx engines and redesigned wing, 975,000 lb MTOW, 308,000 lb payload over 4,390 nmi and "16% lower ton-mile operating cost than the 747-400F".
Simple Flying's anniversary retrospective corroborates the October 12, 2011 delivery date and Cargolux's role as launch customer.
Boeing's own press release, dated October 12, 2011, announces delivery of the first 747-8 Freighter to launch customer Cargolux.[1]
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