Let's be honest though. CAO48 is a joke. It makes very few differentiations between tours of duty that commence at 2200hrs or 0800 hours
Yep Regulator and operators do not give one toss until one day something goes wrong. Do a few searches on humans operating machinery during the early hours of the morning and you soon realise just how much is at stake.
Sure its part of our job but i've had the impression on more than one occasion that its a put up/shut up arrangement.
Be honest with yourself how many hours sleep do you really get?