I agree Dick. The content of that letter is meandering twaddle.
The first sentence doesn't make sense. I can't figure out the subject of the clause "as expressed in". For those who appear to understand it, if the first sentence instead finished with a full stop after "126.7", what would the words after that be changed to turn it into a second sentence?
Second paragraph? Wiser minds than mind will have to work that one out.
CASA "sought to give meaning" to a phrase within the CARs? Doesn't matter a toss what CASA "sought" to do. A phrase in the CARs means whatever it means, no matter what CASA says, does, seeks or hopes.
Grade: F.