they can send someone to CASA's own nominated specialist, and then reject that person's ok to fly advice
no surprise there. . .they've been practising this obstructionism for a few years now. One of the arch perpetrators of this virtual knee-capping had some explaining to do before the AAT last year. He came out a tad shame-faced.
But of course the poor sod who mounted the appeal got nothing for many months out of work.