Whilst the actual difference in maintenance between certain aircraft on ether class A or B may be similar. The certifcation and the record keeping between the two is chalk and cheese. So Bill you are totally incorrect.
As for doing Sb it's clearly defined in the caap.
Also your account for not doing SB in class A once again is in correct.
I have never seen a class A aircraft lbs that's omits doing Sb etc.
as you keep going on about the difference in safety between USA and Australia please define. Don't place maintenance safety in with flying. Maintenance here is as safe if not better than the USA. And yes I been and worked in the USA as well as other countries.
And considering some of what that's come out of the states it's a wonder they even fly.