The CRJ200 is almost identical to the earlier CRJ100 model, except for the adoption of more efficient engines; these new engines have been attributed as having provided the CRJ200 with several improvements in performance, such as lower fuel consumption, as well as an increase in cruise altitude and cruise speed.[1] Bombardier had specifically designed the new model to provide better performance and efficiencies than any of its nearest competitors at that time.[2] There is also a CRJ200 freighter version, designated as the CRJ200 PF (Package Freighter), which was developed in cooperation with Cascade Aerospace on the request of Scandinavian operator West Air Sweden.[14][15]