The attack which switches healing with damage and vice versa is called Subversion. It's on the bottom right of your abilities screen, and I will let you all know if it works for me like it did for TTromaX.
I agree with Zz01, keep this piece of crap buried. It's far from being a treasure. Especially with the damn buzzsaw that follows the chopper's movements almost exactly, you can't get a man down once it starts moving.
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