I've not played a decent helicopter game in ages so nice to see someone trying it.
Controls were ok. I feel like the mappings were a bit non-standard for keyboard helicopter controls, but were quick to adapt to. The window didn't capture the mouse cursor which made it really hard to look around. I also had trouble working out where to drop stuff off once I'd picked it up, but that might have been related to the camera look issue.
In terms of the theme, it didn't really fit the 3 requirements.
Overall, some potential for a fun game to come out of this, and the world needs more arcadey helicopter sims