I too bought a Hawk Sky from Nitroplanes. It arrived with more things wrong that I could have ever expected. I had to add on my own control horns, get my own landing gear, and supply the rudder control cable. Once all parts were together, I found that all worked except the motor. I wrote to Nitroplanes 3 different times asking for help --no reply. So I went to BP Hobbies and bought a new ESC, having read on different forums that people were getting new Hawk Sky planes with DOA ESCs. Replacing the ESC didn't help. So, I bought a new 2.4gHz receiver for it. Still no go. Finally I bought a new outrunner motor. That finally got the plane to work. In testing the equipment I replaced, I found that on arrival the motor, ESC and receiver were all defective in addition to the missing parts. I wrote to Dynam about it and got the same response I did from the vendor: none. It took me 4 months and $72 to get the plane, priced at $119 to work. I thought I would save a few bucks over the Easy Star and ended up paying more for the Hawk Sky.
I bought an Easy Star and had it in the air within an hour and a half, including charging the battery for the first time. I strongly recommend that anyone who thinks of buying one of these planes just go buy an Easy Star and avoid the Hawk Sky --unless someone gives you one for free. That's exactly what they're worth in my book. Apparently, according to forums, my experience with the plane is pretty common. I'm pretty disappointed in Dynam and Nitroplanes, both companies I just won't deal with anymore.
However, I built an ardupilot system and installed it in the Easy Star, and while I haven't flown it yet --I still have a lot more to do, the plane reacts on the ground as I hold it in different attitudes, showing that it works. When I finally get it flying, I'll post about it.
There are two different versions of the Hawk Sky out there. One with 72mhz radio and another with 2,4ghz. The 2.4ghz comes with a brushless motor, the 72 with a brushed one --that's what I found anyway. I'm glad that some of you had good luck with the Hawk Sky, I sure didn't and it looks like I'm not alone.