IFD540/440 Touch Screen GPS/NAV/COM : 440/540 Install Checklist (help needed)

AviJake wrote: Congratulations on, and thank you for the purchase. .....As for 540 and 430 playing together nicely, the answer is no.  They are not on speaking terms.  Said differently, they can't be wired up over Com3 and share any data.  In fact, connecting the two over Com3 will have meaningfully adverse affects on the IFD540.....

I looked very carefully at your reply, and then I spent some time with the Flight Guide.  Meanwhile I had been using the iPad simulator for several weeks.  Now, I downloaded the PC Simulator and ran both the 540 and 440 sims simultaneously for a full day.

I am now a believer.

After looking carefully at the way the units work together and the issues which I would have to deal with if I kept the 430 as the #2 unit:

• different operating methods
• different databases
• no intercommunications of data
• And, of course, the user-unfriendly G***n software in the remaining unit, which was a main reason for going to the 540 in the first place.

I called the shop, where my plane (a Cessna 182RG) goes in Monday for the 530W -> 540 replacement, and we discussed replacing the 430W with the 440.  It will be done. 

I am sorry I won't be at Oshkosh to meet the gang and see the goodies, but I have sent some friends your way.  Have a good time!