tiger19 - my reading was that CASA just sought to ensure they got remedial training to validate the endorsement, it doesn't seem to imply they wanted to revoke the endorsements. It would seem a bit heavy handed to make 1000 hours of experience disappear because the initial training was done improperly when all that was required was some additional training.
Also, on reading that proceedings document I concur with Sunfish. If nothing else the way the CEO was trying to slight of hand responsibilities and switch between legal entities as a defence was appalling, and the complete lack of action on the issues identified just underscores the culture he was applying.