Aeronautical Engineers (AEI) has delivered the 50th B737-400SF 11 pallet position freighter conversion. The aircraft built in 1992 (MSN 26437) is a high gross weight B737-400 and was delivered to Ypsilanti, Michigan based Kalitta Charters. This represents an important milestone in AEI’s freighter conversion history. Orders continue to remain strong as AEI has another 15 B737-400SF freighters on order for this year. The aircraft was converted at Commercial Jet’s Dothan, Alabama facility.