Aeronautical Engineers Inc. (AEI) have been selected by Farnair Switzerland (FT) to provide 4 firm B737-400SF 11 Pallet Configuration conversions, with an option for 4 additional conversions. The 1st aircraft, a high gross weight B737-400, will undergo freighter modification in August 2013 at AEI’s Authorized Conversion Center / Commercial Jet. (AviTrader, June14th 2013).