Originally Posted by
Gunfighter
That was my initial thought as well, but 23.5.d. 2) b) provides for notification 12 hours prior to the end of your last non fly day, excluding vacation. Even if you don't check your schedule til the beginning of your RES obligation, you were "notified" 12 hours prior to your RES period starting.
You are not notified of the assignment at 12 hours prior. It must be placed on your schedule by that time. You are notified of the assignment whenever you actually see it and acknowledge. You are responsible for ascertaining that assignment - that can be when they place it on your schedule, or at midnight when you go back on call and check your schedule. The only way it would count as being assigned 12 hours prior is if you physically acknowledge it at that time.