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MIAMI, FL., –January 22nd, 2013 — Aeronautical Engineers, Inc. (AEI), is pleased to announce that ATRAN Cargo Airlines has taken delivery of its second AEI B737-400SF 11 Pallet Configuration Passenger to Freighter Conversion. The aircraft, a high gross weight B737-400 (MSN 28758) was built in 1997 and underwent passenger to freighter modification at AEI’s Authorized Conversion Center, Flightstar Aircraft Services, Inc. which is located in Jacksonville, Florida.  The aircraft is being leased to ATRAN Cargo Airlines by Aviation Capital Group (ACG) which is located in Newport Beach California.