On Wednesday, October 28, 2015 at 10:32:51 AM UTC-4, wrote:
A sailplane's Flight Manual usually requires a magnetic compass (or an aviation compass)as minimum equipment. Well, panel space has become less available and you are seeing fewer sailplanes with panel or glare-shield mounted 2.25 Airpath C2xxx or PAI-700 aircraft specific compasses.

Grob Astir CS does not require as minimum equipment.

https://www.dropbox.com/s/yjlrf96sbf...%20PM.png?dl=0