Have you ever had a plane loose control and fly away. If so, did you find it? How far away? Did it destroy anything?

Last year I had one up and started having problems with the trim, it got kind of far out and then i could not seem to get control, it was looping and rolling spirals then it was gone[]. I went looking for it and while I was gone someone came over to the field and told the other guys they seen a out of control plane go down on the other side of the hiway. We went over where it was last seen and about 300 yards behind a car dealer in a swampy area we found it about a mile and a half from the field. The plane was junk but the engine was fine and the radio stuff was very old any way. Couple days later when I was trying to charge the tx battery my charger a triton jr. keep beeping I then became aware that the Tx battery was no good and would fall on its face when loaded. So now every so often I use a cycler to not only condition my batteries but to test then as well.