Allied Air Cargo (4W) of Nigeria has selected Aeronautical Engineers, Inc. (AEI), to provide two firm B737-400SF 11 Pallet Configuration conversions, with an option for one additional conversion. The first aircraft is a high gross weight B737-400 (MSN 26081) built in 1993 and will undergo freighter modification in June 2013 at AEI’s Authorized Conversion Centre in Jacksonville, Florida.