Start to watch when the schedulers release "sick trips" into Open Time each morning.
The earliest time is 7am when the trips are taken from the sick pilots.
The latest time is 10am.
Prior to 4A2B they were typically released by 7:10-7:15 am, but when they want to increase Reserve Utilization they wait later and later hoping pilots will stop monitoring OT --- especially those on the road who hope to put in for a trip before they head to bed.
During 4A2B I saw the sick trips drop in OT as late as 9:45 or 9:50am --- which gave them minimal exposure before they could assign them to reserves at 10am
This is not the intent of the 3 hr window and needs to be specifically addressed in the next contract.