when did they make their first aircraft?
The brothers flew the glider in the early autumn of 1900.
Wright brothers
The brothers flew the glider for only a few days in the early autumn of 1900 at Kitty Hawk. 
who is credited with performing the first heavier-than-air flight The Wright brothers—Orville  and Wilbur Wright where did they spend their childhood? They lived in twelve places before finally settling down in Dayton.
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Wright brothers [SEP] 1900
The brothers flew the glider for only a few days in the early autumn of 1900 at Kitty Hawk. In the first tests, probably on October 3, Wilbur was aboard while the glider flew as a kite not far above the ground with men below holding tether ropes. Most of the kite tests were unpiloted, with sandbags or chains and even a local boy as ballast. They tested wing-warping using control ropes from the ground. The glider was also tested unmanned while suspended from a small homemade tower. Wilbur, but not Orville, made about a dozen free glides on only a single day, October 20.