On 25 Oct, 18:32, "Paul Remde" wrote:

FLARM has become extremely popular in several regions of the world (Europe,
and Australia, and ...?), but it has not been "allowed" in the USA so far.
However, there are several gliders flying with FLARM here in the USA. It is
a great technology solution and safety enhancer. But technical and
liability hurdles exist here in the USA. Everyone that I've talked to that
uses FLARM in their glider loves it - especially in contests or at crowded
soaring sites, or along crowded ridges.

I have never used it myself [1] but I was chatting about it just a few
days ago with an instructor at a busy ridge site here. His view was
that it's a menace: it generates far too many false alarms, and pilots
who try to evade non-existent hazards may thereby cause significant
danger. What are you supposed to do, he asked, if you get a six-second-
t-death warning about a glider which is supposedly dead ahead but
which you can't see? He reckoned the main problem was that the system
only believes in "cruising" and "thermalling" and gets hopelessly
confused by the turn at the end of a beat on the ridge.

Ian

[1] and have no intention of doing so: I'm profoundly sceptical about
a further increase in the number of things to fiddle with and focus on
inside the glider. Why not just look out?