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AEI's 11 pallet B737-400SF Freighter Conversion


The Aeronautical Engineers Inc. (AEI) B737-400SF Cargo Conversion per FAA STC ST01827LA, consists of the installation of a 86"x140" cargo door on the left side of the fuselage, and modification of main deck to a Class E cargo compartment. After conversion the aircraft can carry ten 88”x125” AAA full height containers or pallets plus one AEP/AEH , with pallet weights up to 8,000 lbs.

AEI's cargo door has earned a reputation of being the most robust and reliable in the conversion industry. The cargo door is hydraulically operated and actuated from the inside of the aircraft by an independent system. Hydraulic pressure is available from two sources; a 28VDC electrically operated hydraulic pump or a manual hand pump. The door control and manual pump are located on the 9g barrier, allowing a single person to operate the door manually.

Main Attributes

  • Ten 88”x125” Pallet Positions. Can accommodate AAA containers in P1-P10 and a AEP/AEH in P11

  • Up to 47,100 LB (21,364 KG) Main Deck Payload (depending on Model & Aircraft Weight Limits)

  • Reinforced Floor structure for highest average position weights in industry

  • 86" x 140” cargo door

  • Dual Vent Door System

  • High reliability, 28VDC, independent cargo door hydraulic system

  • Cabin windows replaced with lightweight aluminum window plugs

  • 9g rigid cargo / smoke barrier with sliding door

  • Relocated DFDR for 84.5” + ceiling height through out cargo compartment, including last position

  • Stretch Formed fuselage skins

  • Up to 4 Supernumerary Seats

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