FedEx Eyes Boeing Aircraft - Yahoo FedEx Corporation, the world's second-largest package delivery company, is mulling to buy freighters from The Boeing Co. and Airbus to make its fleet more fuel efficient. The company intends to replace its older and less-efficient aircraft. This move will reduce transit time and lead to fuel and operational efficiencies, providing FedEx a competitive edge over its peers, particularly United Parcel Service Inc. However, the purchase might slow down due to the weak economic outlook and the risk of losing postal service business. FedEx is the largest contractor for postal service.