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.


d.2)b) twelve hours before the end of their last non-fly day (other than a vacation
day) before an on-call day.
Note: A pilot is responsible for ascertaining whether they have been assigned
a rotation or converted to short call under Section 23 S. 5. d. 2) b). Crew
Scheduling is not required to make telephone contact for such an assignment
or conversion.

e. will not be required to remain available for contact in the 24 hours prior to the
scheduled report of an assigned rotation.


If a pilot is assigned a trip 12 hours prior to the end of their off day, do they have to acknowledge the trip?

The PWA implies the pilot is responsible for ascertaining they have been assigned, so one could assume acknowledgement isn't required. I know under the old PWA failure to acknowledge a trip on the off-day schedule check would trigger a call at the beginning of LC. Under the current PWA language, the pilot is free of contact 24 hours prior which would remove the option for the CS phone call.