Hi Dennis, I recently flew a friend’s c310 with IFD540/440 and really liked them. They seem much more user friendly and so simple to operate. I was ready to jump on them when he had an issue and the avionics shop had to send his 540 back to FL somewhere. He waited many weeks for the repair and it was not inexpensive. SEA is a giant aviation hub and to think that he couldn’t get support somewhere here or in CA or nearby made me wonder about follow on support or long term prospects of those IFDs.
Do you have any advice that would make me want to return to then and add them to my panel? Also, it seemed that they came with all the bells and whistles at a lower $ than Garmin. Do you have some guidance regarding that?
Thanks for helping out. Aloha,