Good luck with your enquiry. However, you should specify that EK pilots don't answer this question for you (regarding EK) -- b'cos the Chairman of EK is also the head of the GCAA of the UAE. Therefore, the flight and duty regs. that apply to you do not necessarily apply to EK. Ask any EK pilot...and I think you'll find that the regs. can be adapted as are "operationally required".