John,
I do not know if I need the push button feature, but maybe you can help me out or point to someone that can. How can I start the count-down timer when I throw the throttle-hold switch? I would love to do this on my electrics. Can I do this with some programming?

PS I flew the Beaver on floats at a charity event and it was a big hit. The slow fly-by with full flaps, low over the water was a crowd pleaser. I am awaiting your next Platinum Series warbird! (My vote is a flap/retract Hurricane or F-86 in 25 size).