Very entertaining
The premise reminds me of Sketchfighter and Choplifter. Anyway, this game kept me playing for a long time. I loved the helicopter/mothership dynamic. What I didn't like were the time limits. In some levels, making the time limits seemed impossible, especially because you're at the mercy of how far away the carrier is. I mean, it's to the point where suiciding gets you more points. I would make the carrier try to follow you, or else give some control over where it goes. Also, how about selecting different aircraft? For instance, a jet fighter that's faster but can't hover in place, and/or a bomber that's slower but has a bigger payload. Guided missiles and/or self-aiming 'point defense' turrets for your craft would have been nice, too.