I was getting ready to take off on my 2nd or 3rd flight of the day today, when my throttle servo went crazy. I thought it was the engine at first, but you could see the throttle arm moving without moving the sticks.

I thought it was a bad servo and flew my other plane without problems. It is my OMP .40 Edge and I was hovering pretty low for most of the flight.

When I got home I swapped out the servo, but the problem continued.

I swapped the rcvr (and channel - it is a synth Futaba 9Z), no change.

Then I went to the SERVO function on the radio (where you can look at the servo functions - there is a similar function on a 9C). The throttle "servo" was moving all over the place when I wasn't touching the sticks.

Interestingly, it only seems to happen on MODEL 8 - my Laser 3D. The TX is two and a half years old, and I did drop it on concrete about six months ago, but it has worked well since then in fairly heavy use.

I consider myself lucky to have my planes intact, and I'm sending the radio in for service Monday.

I think it underscores the need for being careful, and preflighting the plane EVERY time before you take off. This is particularly important with big planes, but even .40 size planes can do serious damage. These days, no field in the country is more than one serious accident away from being closed, not to mention the risk of hurting someone.

Leonard

PS the pic is me, flying on this radio AFTER the problems started