This saga reminds me of when I applied to emigrate to Australia. Dragged on and on and no reason for delay was forthcoming. My wife was also fed up with the negative answers so she sent a telegram to the highest position possible, the Minister For Emigration. He was so surprised as no one had ever done it before. We emigrated 6 weeks later. I suggest you do the same. Go to the top. In this case I guess the Minister of Aviation!! It is his job to get you some answers. Even CASA won't like questions being asked in da house. Don't give in to the 'faceless/gutless' ones who run the show. As said before, we pay their wages. Make them earn it.