Originally Posted by
A and C
Those who decided to stand by a public road outside the protected public area decided to take that informed risk and as adults they are responsible for the consequences of those risks.
I have no idea what you mean by a "protected public area".
It's in the nature of an air display that participating aircraft can be seen from some distance away, and can normally be expected to perform some manouvres outside the airfield boundary. Whether those who can witness the display from a public road are there for that purpose or are just passing through is immaterial, and the comparison with TT Race spectators is a red herring.
Out of interest, how large a radius outside the airfield boundary would you define as your exclusion zone, within which you consider anyone present with the intention of watching the display to have willingly placed themselves at risk?