The American manufacturer started on the 26th of june 2011 Function & Reliability (F&R) testing and extended operations (ETOPS) demonstrations on the 787 Dreamliner. This is the final phase of flight testing prior to certification of the airplane.
This is the main factor to accelerate the penetration rate of composite materials. Fortunately robust solutions are now available on the market and others should be fully operational soon. Here is a review of recent advances is this field.