Hello All,

I seem to remember hearing a discussion in our FBO regarding the requirement to physically fly a part 91 aircraft over certain points in the US to verify transponder accuracy every two years? It has been a while since I overheard this so forgive me if I'm way off here. I believe it was related to Transponders/RVSM/LOA's. I remember hearing Wichita KS mentioned. I've tried to research it and have come up empty. I'm obviously aware of the standard checks done on the ground every 24 months but this seemed to be different than that. Any clarification is greatly appreciated. Thanks.