"Mark James Boyd" wrote in message
news:3fdbd02d$1@darkstar...
Not totally correct. In the US you CAN fly IFR without being on an IFR
flight plan and without a clearance, so long as you do it in Class G
airspace.Both aircraft and pilot must meet IFR requirements, however.

Ivan
CFII

What aircraft IFR requirements are there for gliders?

snip

You are correct that most FARs speak to airplanes, but even for airplanes
the FARs are not governing for any particular aircraft. Typically, the
flight manual will say if the aircraft can be flown under IFR and if so,
what instruments are required. For example, in the G-102 manual it says that
only VFR flight is permitted while the LS-3 states that "cloud flying" is
permitted.

Ivan