Let's see; flight, gravity, physics. Come on down to the nearest grain elevator and bring your hang glider. When you step off the top edge to prove the theory of gravity and flight you'd better be strapped in because without it physics will come to an abrupt halt in your case.
The implication in this post is that you believe gravity is a fact and evolution is not. This shows an underlying misunderstanding of the terms fact and theory as well as a misunderstanding of the fact of evolution.
Simply put, evolution is the variance of allele frequencies within a population through differential reproductive success. This is a fact. It is an observation that allows us to develop data points. Evidence from biology, genomics, geology, anthropology, paleontology, astronomy and others give us additional data points.
In you analogy, this is the same as the observation of gravity in action. Fall from a height and you've provided a data point that can be applied to the development of a theory of gravity, the explanatory model of attraction of masses.
The theory of evolution (ToE) is also an expiratory model for the data points the fact of evolution provides.
In other words, a fact is a data point and a theory is an explanation.