Aeronautical Engineers, Inc. (AEI) is pleased to announce a deal providing Canadian-based KF Aerospace with three B737-400SF freighter conversions. Timing for the total program completion is still being finalized, however, one aircraft (MSN 24769) is scheduled to commence modification in May 2020. The modifications are being performed by KF Aerospace’s Kelowna facility, which is an authorized AEI Conversion Center.

AEI continues to see strong demand for its Classic 737 program, namely with the -400SF series, of which 7 freighters have been announced this year.

AEI’s B737-400SF shall provide KF Aerospace with a highly flexible Ancra CLS capable of carrying multiple ULD’s including:

  • (10) 88”x125” ULDs in P1 to P10 or
  • (8) 96”x125” in P1 to P10 and
  • (1) 53”x88”x64” Pallet or AEP/AEH or 60.4”x61.5” AKE/LD3 or 61.5”x88”x56”H AYY in P11


This unique flexibility has been designed by AEI to allow cargo operators to immediately adapt to multiple ULD configurations at a moment’s notice. When combined with proven reliability, the AEI Converted B737-400SF will allow KF Aerospace to keep their aircraft –“In the air, generating revenue”.