Kingfish wrote:

Don't you have to *see* the other aircraft before you can give way? As
has been mentioned by other posters in this thread, if the glider
didn't have a transponder the jet's TCAS wouldn't have seen it, and the
glider's profile might make it hard to spot. Why do you automatically
assume the Hawker pilot is at fault?

Because the rule is that ALL powered aircraft ALWAYS give way to ALL
gliders and, in uncontrolled airspace, they do this by seeing the other
aircraft and avoiding it. Not by squawking.

Prima facie, the powered aircraft is at fault.

Like when I hit another car from behind, prima facie it's my fault.

GC