http://seattletimes.nwsource.com/html/boeingaerospace/2003889663_boeing180.html
excerpts:

A former senior aerospace engineer at Boeing's Phantom Works research unit, fired last year under disputed circumstances, is going public with concerns that the new 787 Dreamliner is unsafe.

and

Boeing told investigators Weldon was fired for threatening a supervisor, specifically for stating he wanted to hang the African-American executive "on a meat hook" and that he "wouldn't mind" seeing a noose around the executive's neck.
Weldon denied to OSHA investigators that he had referred to a noose and said the "meat hook" reference had not been a threat.
OSHA dismissed Weldon's claim, denying him whistle-blower status largely on the grounds that Boeing's 787 design does not violate any FAA regulations or standards.