Menu Animation

Hi I am currently doing a menu for my game, And I want to Have A helicopter fly by every 1-2 minutes how would I do this? Obviously I will do the Helicopter and And animation, I just need it to fly forward and respawn when out of the camera every 1-2 mins.

if the helicopter is a prefab, you can set colliders out of the screen view and destroy when it collides with the collider, and then instantiate on the other side of the screen.