Mexico-based cargo airline Aeronaves has exercised an option with Aeronautical Engineers, Inc. (AEI) 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.

The option aircraft (MSN TBD) will commence modification in September 2021. All modification touch labour and maintenance requirements will be performed by the authorized AEI Conversion Center, Commercial Jet, in Dothan, Alabama.

The second aircraft will commence modification in January 2022. TSM currently has several AEI freighters undergoing modification, including one B737-400SF, two CRJ200 SF, and one MD-83SF.