1. Material productivity gains achieved in discussions with cabin crew unions in early 2011 2. The organisation was not fully prepared for the major change this demanded, as we switched from being duty day constrained to block hour constrained 3. Various special measures were required to ensure we could fully operate the schedule, as we approached the end of the Cabin Crew block year in April 2012 4. Block hour management program for 2012-13 - central to this is the operation of cumulative block hour limits in our Carmen Roster Optimiser.
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