Looks great, well done. Could I just make 2 suggestions, though.
1. The shots of it flying were a bit distant, I couldn't really see the chopper. Maybe try adding more but closer ones. Also, the end shot of it landing was too far. Maybe it could be broken down into 2 shots - 1 for the power plant and 1 for the landing itself.
2. You could try adding
this script, it makes it look better, and you could try playing around with it. It makes it look more realistic and cooler I think.
Otherwise it's a good solid piece of scripting. I'm sure you could create more!
-=GC=-Fungus1999