The FAI General Aviation Commission (GAC) has implemented the use of GNSS Flight Recorders to simplify methods of gathering and certifying flight data, and to use more objective methods for measuring flight performance data.
Currently approved GNSS loggers are compulsory in Air Rally and Precision Flying Competitions.
The Requirements are documented in Annex 4 to Section 2 of the Sporting Code. The document can be found Here
Application for approval of GNSS equipment must be made to Jan Hanekom This e-mail address is being protected from spambots. You need JavaScript enabled to view it. .