It’s becoming more rare, but it’s still one of the most awesome jets in the sky. How much do you know about the 747?
1) The Boeing 747 first flew in _____.
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2) The original 747 design had the upper deck running the entire length of the fuselage, but because the plane couldn't safely be evacuated in the FAA mandated ___ seconds, the idea was thrown out.
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3) Complex high-lift devices were used so the 747 could operate out of existing airports. Leading edge slats and three-part fowler flaps increase the wing area by 21%, and increase lift by up to ___%.
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4) Early models of the 747 had a high-speed flutter problem in the wings. Engineers solved the problem by placing depleted ______ counterweights in the outboard engine nacelles.
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5) Development of the 747-400 began in 1985. With a new glass cockpit, the crew requirement was reduced from ___ to ___ pilots.
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6) The 747 has a wing sweep of ______ - more than any other commercial aircraft in the world.
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7) Since 1969, roughly _____ 747s have been built.
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