Steve, as you know, I lost control of a plane recently and it caused a small fire.
I had experienced some control glitches with other planes, and I realized that it was always with one transmitter (I have two that I use about 50/50). So I sent that Tx back to Horizon for examination. I fully expected that they would send it back saying “nothing wrong.” But I was surprised to receive “Per Horizon product bulletin, replaced defective RF output board.”
They didn’t say explicitly which bulletin. After some search, I believe it might be this one:
Anyway, I would highly recommend that anyone with a Spektrum DX18 should either look into this, or buy a fire extinguisher.