Aeronautical Engineers Inc

Aeronautical Engineers Inc (AEI) is a specialist aerospace firm focused on the design and manufacture of passenger-to-freighter aircraft conversions. Operating within the secondary market and maintenance, repair, and overhaul sector, the company provides technical solutions to extend the operational life of narrowbody commercial airframes by reconfiguring them for heavy cargo service. The organisation’s portfolio is centred on Supplemental Type Certificates for high-volume platforms including the Boeing 737-800, 737-400, and McDonnell Douglas MD-80 series, alongside regional jets such as the Bombardier CRJ200. AEI serves global aircraft leasing firms and freight operators, licensing its conversion designs to a network of third-party authorised conversion centres worldwide to execute the physical modifications. Prospective partners should verify the specific weight limits and volumetric capacities of the conversion kits, as these vary by airframe variant. It is also necessary to confirm the current status of regulatory approvals from bodies such as the Federal Aviation Administration and the European Union Aviation Safety Agency for specific regional jurisdictions.