Aeronautical Engineers, Inc. (AEI) has announced that Saltillo, Mexico-based Aeronaves T.S.M. S.A. de C.V. (TSM) has exercised an option for a B737-400SF and included one additional B737-400SF freighter conversion in this order.
In November 2020, AEI announced the first B737-400SF freighter conversion for TSM with one option.
