I own a flysky fs-ct6b I know its very bad I will but turnigy 9x soon...
But right now I need to know if you lost connection with your receiver during flight?? How far was your plane??

If it happened what would be a good trick to use incase it happens as when the rx looses connection the motor doesn't stop..

I am using ct6b i have faced no problems till now. It's a decent tx for it's price. The thing is that if even somehow you program the tx so that the motor does not stop when the signal is lost so the plane will keep moving in the direction when it lost the signal and it will fly away. So it's better if the motor stops so that the plane will glide and come to the ground.
Regards

How do i program it in that way??

There is no need to program whenever the signal is lost the motor will stop and the plane will glide and eventually come down and land.
Regards

Oh..