OPSMAD
Depends on the flying programme, if it's daily to PMI 7 days a week you could manage with 2 crews, if its daily to Sydney then its more.
In general terms, UK Airline
Charter 6-7 crews
Loco 5 ish
Night frieght 3.5
Long Haul 8+
The formula normally involves working out how many days in a year, less days off, leave, sim and courses, bit of sickness. Then you have a number of working days left. Then its down to the flying programme, the dreaded word to Accountable Managers is then standbys, they don't want any, you want some. Then when a final figure is decided the beancounters will chop it by 10%.
TC's - never enough of them when you need em, my Airline is aprox 1 TRE to 4 aircraft but everyones different. TRE counts as 50% of a head so 50% line and 50% training, that's the most important bit to factor them in (between 25-75%)
