Wait a minute... The MD-12

Year1992:

McDonnell Douglas studied improved, stretched versions of the trijet MD-11.

The design grew into a much larger aircraft with four engines and two passenger decks extending the length of the fuselage. The airplane had a capacity for 513 pax in a three-class layout.

Despite aggressive marketing and initial excitement, especially in the aviation press, no orders were placed for the aircraft.

McDonnell Douglas was crazy...a double decker for 500+ passengers..? That's just Insane!!

Wait a minute...

Year2005:

The first A380 was unveiled at a ceremony in Toulouse on January 18, 2005. Its maiden flight took place at 10:29 a.m. on April 27, 2005. This plane, equipped with Trent 900 engines, flew from Toulouse on a 54 minutes test flight.

The Airbus A380 is a 555 seats, double deck airplane...