You won't like this Duca I was an instructor at one of the first ATOs to introduce so called training protection/guarantees back in 2000. It's like most insurance policies full of get-out clauses to avoid paying out. Who gets to decide aptitude or effort a very fine line & you won't be making the decision. In all my time (over 20 years) at a couple of the major ATOs I can count on one hand the number of refunds given. It looks good on paper but different in reality as any student who appears to be a potential problem normally gets warned that their 'protection' will be revoked if they fail to reach certain standards, this was much more common than refunds.