USA Jet Airlines (UJ, Detroit Willow Run) has flown its MD-83 N831US (MSN 49791) to Miami Int'l for conversion into a freight configuration. The aircraft will be converted by Aeronautical Engineers (AEI) and become the first MD-83(F) freighter. Everts Air Cargo (5V, Fairbanks Int'l) currently already operates an AEI converted MD-82(F).