what is do for a real simple one is go into F1, empty, objects then fine H invisible ( makes an unseen heli pad) place that near you the chopper will want to land on it then in the WP make it LOAD, put ,,,,, use this in modification with your scripts if it helps
Name land"land";
this flyinheight 0 =this keeps the chopper running
so it should look like this
heli1 land"land"; this flyinheight 0