GPS units 530 and 430 are already implemented. We implemented them for Aerofly FS 2 for Just-Flight and these two should still be in the executable and are available.
That sounds great! Any chance IPACS could update the Aerofly FS 4 Aircraft SDK DR400 to use a 530 and 430 combo to show exactly how to do this for the volunteer model design guys?
Edit: Also, if that is the case why didn't IPACS update the default C172 to use a 530 instead of just repeating the scrolling map display output?