Pardon my unqualified intrusion. I'm interested in this. If we do some maths involving the number of trips covering a weekend and the number of available pilots (FO, Captain separately) for that fleet, what would the result look like over a period of let's say 3 months? How many weekends would the "average" pilot be working? I agree, it would be a complex calculation factoring in length of trip/leave/sickness/training but I would say something like a third would be reasonable if it was to be averaged out? (After all, the weekend is only 2 out 7 days long).