He added that a deadline for thrashing out delivery terms and finalising the deal would be December 17, when Ryanair holds a board meeting. Declines Whether Boeing will now cave in to Ryanair's demands remains to be seen. Aircraft manufacturers including Boeing and Airbus maker EADS, have experienced sharp declines in orders as carriers cut back and postpone orders. Airbus is also facing problems with orders and delivery of its flagship double-decker A380, while Boeing continues to struggle with its massively over budget and delayed 787 Dreamliner. Mr O'Leary again ruled out a third takeover bid for Aer Lingus as shares in Ryanair closed down 3.8pc at €2.97 yesterday.