I like it
Great idea, simple execution - gets damn hard too.
Room for improvement: Perhaps slightly better graphics (I like the simplistic black on white but maybe, I dunno, make the plane look sleeker or something) , and give me time to move my mouse to the fan after clicking restart round. I only made it to level 4 so don't get annoyed at me if there were moving objects later on, but that's also a suggestion.
I'd love to see a sequel.