The first working plane was piloted by the Wright brothers.
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A plane will travel 840 miles if it flies at 210mph for 4 hours.
840 miles
Fly the plane onto a huge ship or an aircraft carrier. Paint a mark on the side of the ship to indicate the water level. Then fly the plane off of the ship, and replace it will increasing amounts of known weight. Continue to add weight until the ship sinks to the same water level that you marked on the side. Then you will know the weight of the plane.
Hover, take off or land vertically, and fly sideways and backward.
the first Chinese made plane.