Which McDonnell Douglas aircraft was known for its distinctive "double-bubble" fuselage?
DC-9
DC-10
MD-80
MD-11
Answer
The DC-9 was a twin-engine, single-aisle jet airliner developed by McDonnell Douglas. It featured a distinctive "double-bubble" fuselage, which provided a wider cabin and increased cargo capacity. The DC-9 was first introduced in 1965 and was the basis for the later MD-80 and MD-90 series of aircraft.
Test Your Wings: The Ultimate McDonnell Douglas Aerospace Trivia Challenge