Thanks alwayzinit.
Kennedy, my question was not what types of activities constituted such duties, but what if any limits there were on such.
The freighter operation in particular is throwing up some interesting patterns, i.e.
Operate 2 crew LAX-CPH, wait in the terminal for several hours and then deadhead to somewhere else in Europe.
Deadhead Mexico City to DFW, transit (several hours), deadhead to DXB.