Ron Natalie wrote:

Because the rule is that ALL powered aircraft ALWAYS give way to ALL
gliders and, in uncontrolled airspace,

There is NO SUCH RULE.

Well, there is in every country that adheres to the ICAO treaties and
annexes and you'd better believe it if you ever fly outside the US. I
know the US is the most non-compliant signatory but I'd be surprised if
these fundamental rules don't apply in the US. They certainly apply to
every US aircraft flying internationally.

I could of course be wrong - I make a habit of it.

All aircraft are required to see and avoid regardless of the right of
way rules.

Absolutely. But when they collide in spite of this, the powered
aircraft is prima facie at fault.

If you flew a glider into another aircraft from behind it would be
at fault. The overtaking rules do not have an exemption for class.

I'll stick to what I said.

1. In VMC, ALL aircraft are required to maintain a lookout so as to see
and avoid ALL other aircraft.
2. When on converging courses, powered aircraft are required to give
way to gliders. Powered aircraft give way to airships who give way to
gliders who give way to balloons.

There is, of course, a lot more to it than this but this is where the
lawyers, insurance companies - and probably the FAA unless you're right
- will start.

GC