We'll creamie the problem is casa dose not won't to hold reasonability of it for an aircraft that has a SOM in the M/M it's that simple. As I have said it a minimum of what is looked at. What ever they can wipe there hands off that's what they doing. Sched 5 was and is fine. It was better when the Aust ADs where there to back it up but they slowly been errorded and now we have country of orgin. Like AD hose 5 simple easy to understand and in your face can't argue about it as it was an AD. But no change for change sake. We ended up with a mess.
SB were looked at by CAsa and then made into an Ad if required.
Cheers