As you mentioned there is no set periods of days off after trips, except for the periods which come under our award.
eg time away from base less than 24 hours- 12 hours rest, incl 1 local night.
t.a.b greater than 24 hours but less than 72 hours-18 hours rest, incl 1 local night.
t.a.b greater than 72 hours-36 hours rest, incl 2 local nights.
We have 9 rdos per 28 day period. A typical roster might include 2 3day trips, one 4 day trip and one 7 day trip.
Although we spend a fair amount of time away from Cairns, the duty hours are generally in the 90-110 hours per 28 days.
cheers!
L1P