You mean you want your blackhawk to explode and destroied?
If so, I think you can do this in the On Activation field:
Blackhawk SetDammage 1
Blackhawk is the name of your blackhawk and you can change to 1 to 0.1, 0.2 and any other number between 0 to 1.
This will make it dammge. 0 is no dammage, and 1 is max dammage.
I hope this will do the job
LAPD