The Boeing [NYSE: BA] 367-80, known as the Dash 80, takes off on its first flight since 1991. The airplane was the world's first successful commercial jetliner and first flew in 1954. The Dash 80 is undergoing ground and flight testing in preparation for its final flight later this month. After the airplane returns to its owner, the Smithsonian National Air and Space Museum, it will be put on permanent display at the museum's new Steven F. Udvar-Hazy Center at Washington Dulles International Airport outside Washington, D.C. The museum is scheduled to open in December to commemorate the 100th anniversary of the first powered flight, achieved by Orville and Wilbur Wright on Dec. 17, 1903.