plasticguy wrote:
"Eric Greenwell" wrote in message
...

Michael Stringfellow wrote:


"snip....Why would I ever register the SparrowHawk?

If you want to fly with other aircraft, especially in formation flight,

you

might have to.

Could you elaborate on this? Do you mean thermalling with other gliders,
or being towed?




If you read part 103, you will find a requirement to in 103.13
as follows

§103.13 Operation near aircraft; right-of-way rules.

(a) Each person operating an ultralight vehicle shall maintain vigilance so
as to see and avoid aircraft and shall yield the right-of-way to all
aircraft.

(b) No person may operate an ultralight vehicle in a manner that creates a
collision hazard with respect to any aircraft.

(c) Powered ultralights shall yield the right-of-way to unpowered
ultralights.



I think this prohibits gaggle flying with registered sailplanes because if
you are there, a collision hazard, however small, exists.

That's an extremely stringent interpretation of "collision hazard".
Thank goodness the FAA doesn't use it in general, or only airliners
would be flying. I doubt that the FAA uses your interpretation for
ultralights, since we have powered ultralights flying from our airport
(and many others), where they are clearly a greater collision hazard to
pattern traffic than a glider thermalling with other gliders.

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Eric Greenwell
Washington State
USA