Much has been said in the media over the past few months about pilot fatigue and the associated flight-duty rules which should be implemented. I read in one article that flight time limitations will be enforced by EASA when they become an EU Ops regulation next July. This will no doubt affect existing operating regimes.
"The maximum flight-duty period in draft legislation is 13h for a one or two day sector, with a potential extension of 1h that operators may use no more than twice a week. The maximum flying hours within any consecutive 28 day period will be 100, with 900h the annual limit."
Turner, A., 2007. Duty Time. Flight International. 172(5098), pp9.