Delta Air Lines has finalized an agreement with Bombardier Aerospace that will allow the airline to continue restructuring its domestic fleet by replacing less efficient single-class 50-seat aircraft with new two-class 76-seat aircraft. As part of the agreement, Delta will acquire 40 new CRJ900 two-class regional jets, with the option to purchase an additional 30 CRJ900 aircraft, and Bombardier will assist Delta in phasing out 60 single-class CRJ200 aircraft. The aircraft will be powered by CF34-8C5 engines. This announcement follows previously announced transactions supporting Delta’s domestic fleet optimization plan, including the addition of 88 Boeing 717-200 aircraft to primarily replace 50-seat aircraft, and acquisition of 100 new Boeing 737-900ER jets to replace Boeing 757 and 767 aircraft. Delta will begin taking delivery of CRJ900, 717-200 and 737-900ER aircraft in the latter half of 2013.