AEI Aeronautical Engineers

Delivering Advanced Engineering Solutions

Formed in 1958, Aeronautical Engineers Inc. (AEI) is the oldest conversion company in existence today. For more than 55 years AEI has provided advanced engineering solutions to aircraft owners and operators. As a global leader in passenger to freighter conversions for a wide array of aircraft, AEI has developed over 120 Supplemental Type Certificates (STCs), 400+ aircraft have been modified with AEI STCs – more than any other conversion provider.

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. The door control and hydraulic panel are located on the 9g barrier, allowing a single person to operate the door.

On the main deck of the aircraft the passenger interior is removed, the side walls are replaced with cargo liner, an independent smoke detection system is installed, floor beams are reinforced, and seat tracks are added to accommodate a cargo loading system.

AEI has developed over 120 Supplemental Type Certificates (STCs) and has modified more than 375 aircraft, more than any other conversion provider. AEI’s STCs have been certified by regulatory authorities around the world including EASA, China, Russia and Brazil.