I agree with chicken6. I fly in Oz and we do 15 hours + solo in the training area before navigation training. I also agree, find out what he/she is scared off. I had one student, who owned the aircraft. Well, this aircraft behaved perfectly inside the training area. As soon as he flew it outside, it mucked up, so he returns. He did that 7 times. We found out he was afraid of the empty seat next to him. So we gave him a big Teddy Bear, and hey presto, the aircraft behaved and he completed his solo navs. He now flys quite happily with humans in the right seat.