"There is no way that at that age and with those qualifications that he has ever done more than a small part time job in his life, which would suggest that "some" of the money that his dad paid was closer to £70,000"
Maybe he inherited it? No matter what, he has shown that he can apply himself by achieving 99% in his ATPL's. Well done, it's certainly more than a lot of 19 year olds have achieved.