Re: 707 : How did it get its name ?

Date:         05 Jan 98 23:42:57 
From: (Brian Clouse)
Organization: Prodigy Services Company  1-800-PRODIGY
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>From "Boeing Jetliners" by Guy NOrris and Mark Wagner, 1996, Motorbooks

"The company chose the opportunity to launch the 700-series of products,
the -500 being reserved for gas turbines and the -600 for missiles.  By
all rights, the new aircraft should have been named the Boeing 700; but
possibly for superstitious reasons and because it sounded better, it was
designated Boeing 707.  Seven is a sacred or mystic number, composed of
four and three, which from time immemorial have been accounted lucky

The book didn't say so, but model numbers ending in 7 had already been a
Boeing tradition since the late '30's (297, 377, B-17, B-47, KC-97).