ID,
Reserve vs regular "line" scheduling is a complicated subject. I'll try to give you the Reader's Digest version. I don't know if the system here is similar to what your husband has now but it probably has at least some similarity.
As you likely know, everything in an airline is ruled by seniority: what base you're in, what seat/airplane you fly, when you go on vacation...and how your monthly life at work is structured...everything. It's just the nature of the beast, at least here in the USA at any airline where you'd want to work.
There are many variations on a theme where reserve is concerned but being on reserve is usually dictated by one's seniority (some people do actually prefer reserve for personal reasons but I'll leave them out of the explanation for clarity). All airlines will have reserve schedules of various flavors and the seniority of the pilots junior in the base or airplane type will determine who gets it: short call where you must report within a couple of hours of being called, long call where you must be given 12 hours notice for example...or even airport standby where you suit up and sit in the pilot lounge...just in case.
Reserve lines are just blank days of required availability with specific days off designated for the month. Maybe 11 days or so ? It depends on the airline.
There is just no way to predict how long a given pilot, in a given base, on a given airplane will be on reserve against his will. Just too many variables to factor in. And if someone gives you a prediction, it'll be invalid by next week.
As for how much flying one does on reserve, I've seen it go from every day one is on call to so little flying that the pilot runs out of landing currency and has to go to the simulator to reestablish 3 landings within the previous 90 days...and every point on the scale between those points.
As for a monthly "line" of time, that's just a monthly schedule with the specific trips are laid out in advance so one knows all month where/when he'll fly (for the most part). These are awarded, again, by seniority with the senior pilots in a specific airplane/seat/base getting the good stuff and the junior people getting the junk...and every point on the scale between (with junk and good stuff being somewhat subjective terms). This is likely not too different from what your husband has now. Some airlines print the lines on paper and some use a computer system where one enters his preferences of trips/days off/etc and the computer composes/assigns the lines.
For example, I hated reserve and didn't leave one seat or airplane until my seniority would allow me to avoid reserve entirely. And then I stayed on one airplane and base until I had the seniority on that airplane to control EVERYTHING I did at work. I could tell you two years in advance whether I could be at your house for dinner. That level of control took many years to get but that's one way to use seniority. If a person wanted, he could jump from airplane to base to seat as often as possible and be "junior" for decades. Life is short; don't so that.
I think that's the short explanation and others will come along with aspects I missed.
Last edited by bafanguy; 31st Aug 2019 at 23:34.