from a regulatory fashion, i fail to see how airplane/instrument applies to gliders. they are different categories of aircraft.

furthermore, even if airplane/instrument rating did apply to gliders, there are a host of regulatory issues: could only be in Class G (otherwise one would have to file and activate a flight plan and be in 2-way communications with ATC), and the aircraft would have to satisfy 91.205 and be certificated for IFR flight. these are only a few of the regulatory impediments that came immediately to mind.

On Tuesday, April 21, 2015 at 2:44:41 PM UTC-4, Bill D wrote:
For IFR in gliders, I've been told by the FAA that a pilot must have an airplane instrument rating plus 3 hours logged under a hood with a CFII in a glider and an endorsement from that CFII.