On Tuesday, February 10, 2015 at 8:17:50 PM UTC-8, Bill T wrote:
Most GPS units in gliders may be WAAS compliant, but with the previous language they were not approved to provide adsb out because they do not have the TSO Certification.
BillT

Many consumer GPS chipset based GPS receivers in gliders may utilize WAAS/SBAS technology. But that is *very* different than what is meant by a IFW/WAAS GPS receiver like specified for example in TSO-C145 and the RTCA standards it incorporates.

I would be surprised if there is any GPS receivers installed in any glider gliders that is "WAAS Compliant" if that means TSO-C145, if not that then "compliant" to what standard?