In the early 1990s, McDonnell Douglas unveiled the MD-12—a revolutionary double-deck airliner designed to rival the Boeing 747 and predate the Airbus A380 by a decade. With space for over 500 ...

In the early 1990s, McDonnell Douglas unveiled the MD-12, a bold double-decker superjumbo designed to rival the Boeing 747. Promising capacity for over 500 passengers and lower fuel burn per seat, the ...