Hi Pete, Foreflight from Boeing is gaining track and support from the global community of professional pilots as a leading tool also inlcuding Europe recently. They openly publish their spec for GPS and AHRS data-in: https://www.foreflight.com/connect/spec/ and have an support article online recommending a solution for FSX based on FSUIPC: https://support.foreflight.com/hc/en-us/articles/1500000023701-How-do-I-connect-Microsoft-Flight-Simulator-X-or-2004-FS-X-or-FS-2004-