If you watch the video he does mention the pendulum needs to be manually started etc.
This is correct. It is the other things he says that are simply false.
As with any so-called proof of the earths rotation the fact remains that every experiment ever performed to prove the earth moves failed.
All competent scientists disagree. Only incompetent people who make the sorts of blunders I have pointed out agree with you.
The Foucault pendulum is not proof the earth moves/rotates.
Competent people understand that it demonstrates that fact. Only incompetent people don't.
Why do aeronautical data/information state very clearly that flight must 'assume' a nonrotating stationary flat earth................if it be fiction?
This is nonsense. And Coriolis force is significant but not that large on an aircraft compared to air resistance and gravity. A difference in wind direction is much more significant.
The fact is, flight would be impossible if the earth were a spinning and wobbling sphere.
You can calculate the Coriolis force on an aerplane here. I did and found that it was about 1/300 of the force of gravity for one example. By contrast, the horizontal component of the drag on the same aircraft was about 1/20 of the force of gravity (the vertical component balances gravity, but does not cost energy when the plane is moving horizontally).
Compared to wind, this is comparable to a relative speed of about 20 meters per second (assuming the plane is moving at 300 meters per second). Jet streams are much faster than that.
Bottom line, the Coriolis Effect is significant, but is much smaller than variations in wind speed. This proves your blundering claims wrong.

If you watch the video he does mention the pendulum needs to be manually started etc. As with any so-called proof of the earths rotation the fact remains that every experiment ever performed to prove the earth moves failed.
The Foucault pendulum is not proof the earth moves/rotates.
Why do aeronautical data/information state very clearly that flight must 'assume' a nonrotating stationary flat earth................if it be fiction?
The fact is, flight would be impossible if the earth were a spinning and wobbling sphere.