Certainly repairable. Might take 30 to 40 hours to do it right, but if you had to build a new kit....
I assume this was an ARF, and you want to replace it with another ARF. How long did it take to put together initially? How badly do you want to learn how to build (repair)? How much money do you have to throw at this stuff?
All questions you should answer before you proceed.
Dennis-