. . "* BAC-111\n* Sud Aviation Caravelle\n* Tupolev Tu-134\n* Boeing 727\n* ACAC ARJ21\n* Fokker F28"@en . . . . . . "* C-9 Skytrain/Nightingale\n* McDonnell Douglas MD-80\n* McDonnell Douglas MD-90\n* Boeing 717"@en . . . "*Airstair\n*N900SA"@en . . . "The DC-9 was followed in subsequent modified forms by the MD-80, MD-90 and Boeing 717. With the final two deliveries of the 717 on May 23, 2006, production of the DC-9 aircraft family ceased after 41 years."@en . "* List of civil aircraft"@en . . "The DC-9 was followed in subsequent modified forms by the MD-80, MD-90 and Boeing 717. With the final two deliveries of the 717 on May 23, 2006, production of the DC-9 aircraft family ceased after 41 years."@en . . "Douglas DC-9"@en . . .