Initial Boeing 747-8I Destined For Lufthansa Makes First Flight.

This aircraft - registered N6067U - will eventually be delivered to Lufthansa, and will be responsible for testing the passenger environment of the aircraft including the interior and environmental control systems, galleys and lavatories.

Video location: PAE, courtesy Matt Cawby, http://kpae.blogspot.com/
Information Courtesy of FlightBlogger