Not from my experience. They computer FAR duty time. If you are assigned SC and subsequently assigned a trip, when you go sign in for the rotation it will show your FAR duty time on the bottom. DBMS will not compute duty time from the start of SC for a Flag operated trip, and only for one under domestic rules. The computer does keep track of it.

Now if they put it on your sked wrong, or build the rotation incorrectly, that is a different story. All things being correct, DBMS protects for whitlow, which btw should be a non event with the new ft/dt rigs in late 2013.

Whitlow does not apply for the PWA duty day limitations, only for total duty. Contractually SC without assignment is not duty and therefore does not apply towards the act/max duty day you see on a rotation. That limitation is from report. Whitlow works outside of that. DBMS will look at both. I have been assigned may trips domestically on SC that were going to be close. Everyone of them that ran in to an issue was being watched by scheduling and I was removed when it looked like we could not takeoff without there being a whitlow violation.