AEI B737-200 Cargo Conversion

Detailed Technical Specifications

AEI B737-200 STC ST00283AT & ST00287AT

The Aeronautical Engineers B737-200 Cargo Conversion consists of the installation of a 86"x137" cargo door on the left side of the fuselage, which will allow the carrying of eight containers or pallets (7-88"X125" & 1-88"X108") with a maximum of 31,000 to 37,000 lbs.  The modification is approved under Aeronautical Engineers STC's ST00283AT and ST00287AT. 

Cargo Door   Cargo Floor Modification   Class "E" Cargo Compartment

Cargo Door

  • A Cargo door 86" high by 137" long will be installed on the left-hand side of the aircraft between F.S. 410 and F.S. 500B+9 per FAA approved drawings.

  • Door is hinged at the top and is secured in the closed position by seven latches and a fail safe collective locking mechanism which is interlocked with the vent door.

  • Door is opened from the inside of the aircraft by an independent hydraulic system. The standard hydraulic system utilizes a 28VDC hydraulic pump and as a back a manual hand pump

  • Door is constructed to withstand winds of 45 knots in the fully open loading position.

  • Cargo loading lights are incorporated into the cargo door to provide lighting of the cargo loading area.

  • A "door open" warning system with a indicator light installed in the cockpit.

Cargo Floor Modification

  • Cargo floor is capable of supporting up to 140 pounds per square foot.

  • Cargo floor is equipped with longitudinal cargo tie-down tracks to accommodate a roller loading system.

  • Roller system to allow the carrying of 7- 88"X125" & 1- 88"X108" containers or pallets

  • Roller system including roller trays, pallet locks, end stops and vertical side restraints are provided

  • Ball mat is installed in the area adjacent to the cargo door

Class "E" Cargo Compartment

  • Fire resistent cargo liner (.060 basic thickness) is installed throughout the main cargo compartment.  Longitudinal channels are attached to the aircraft structure to which the cargo liner is secured

  • Air duct is modified to provide cargo compartment air control and shutoff.

  • Smoke detection system is installed to qualify the cabin area as a Class "E" cargo compartment.  The system has an indicator panel in the cockpit to warn of a cabin fire.

  • Cargo compartment lighting is provided in the center overhead.  Lights are protected with a grill.

Miscellaneous Items

  • Secondary main landing gear down-lock indicator is provided.

  • Cabin windows are replaced with die-cast aluminum window plugs

  • Fold down lower jamb protector installed in the cargo door area to protect locking mechanism during loading

  • Illustrated parts catalogue, cargo loading manual, maintenance manual, flight manual supplement, and weight and balance supplement