Originally Posted by Alan Shore

And into vacation, MLOA, etc. Bear in mind that Crew Tracking only knows the rotation you're currently flying. They neither know nor care what you have coming up next. All of that info belongs to Crew Scheduling.

If you are being rerouted into a hard non-fly day, you may, if you wish, so inform Crew Scheduling of the conflict, at which point they will be tasked to "make every reasonable effort to resolve" such a conflict. (23 L. 7.) In other words, if they can find another pilot to fly your reroute and get you back to base in time, they are required to do so.

OTOH, being rerouted into a vacation day(s) can be a pretty good deal, depending upon the circumstance. (7 F. 8.)