Aeronautical Engineers announces that it has delivered the second of five B737-400SF freighters to Southern Air who will operate for DHL Express in the Americas. The second aircraft is a standard gross weight B737-400SF built in 1997 and was converted at Commercial Jet’s Dothan facility, which is one of five authorized AEI Conversion Centers worldwide. The aircraft was sourced, and financing provided thru Strategic Air Finance. This is AEI’s 10th of the anticipated 30+ freighters to be delivered in 2014. The AEI B737-400SF is the only passenger to freighter conversion product that offers operators ten full height 88″ x 125″ container positions.