Oddly enough, under European rules, a glider doesn't need a magnetic
compass unless it has an engine (self launch or sustainer).

I wondered what the logic was, then thought come on, EASA logic is an
oxymoron.

At 15:23 10 April 2014, Chris Rollings wrote:
Certainly a magnetic compass is required under UK/EASA rules, I think i
may well be under FAA rules too, though I'm not certain without looking i
up. The arguement for it is that it is possible that the GPS signals ma
fail and the GPS sets themselves are not a reliable as a good old magneti
compass.

At 15:12 10 April 2014, Dan Marotta wrote:
My wife asked if we need a compass in the Pipistrel Sinus since w
received

one in a box of stuff and none is installed in the aircraft. I told her
I'd
check the flight manual. Under "Minimum Equipment" it states that a
"Compass" is required - it does not state that a "Magnetic Compass" is
required.

So... Is a GPS suitable? It has a north arrow and displays track. I
don't
want to call the FSDO... I suppose I could carry an artillery compass
in
my
pocket!