What was the first manned aircraft created around 1299 A.D.?

The first manned aircraft associated with around 1299 A.D. would be the concept of Chinese sailors attaching themselves to kites. This practice is documented in history where individuals utilized kites for various purposes, including the idea of flight. Kites themselves were designed for stable flight and represented early experimentation with human flight.

Hot air balloons, while pivotal in the history of flight, were not developed until the 18th century. Leonardo da Vinci's glider designs, though innovative, were conceptual and not constructed or flown as manned aircraft during his time in the late 15th and early 16th centuries. The concept of wooden flying machines, while it may evoke ideas about early flight attempts, does not accurately reflect any known successful manned flight from that specific time period in 1299 A.D. The experimentation with kites represents a significant and earlier attempt at human flight utilizing principles of aerodynamics.