That's a great planes snap 21 for sure if the cowl is balsa and the cheeks are plastic. I have one that's still alive and well powered by a OS50 fsr. It's a good flying plane and fun. It will snap or suddenly drop a wing on landing if you let it get slow. If it doesn't look like it's coming in fast it's going too slow. Watch the elevator travel. To much at any speed will get you a quick snap and to much at high speed will get you 2 snaps