28/13 is 1 day off per 2.15 worked
You still have to have 7 legal days off in any given 28 day period so it would be 20 days off total in every 41 day rostering period. (13 of which are consecutive.)
I guess you are talking about commutable consecutive days off.
Apologies if I misunderstood.
Anyhoo, I'll wait for the small print.
Some info on the TNT B74F
Emirates to end use of 747 freighters, citing weak cargo demand | Airframes content from ATWOnline