Freighter Conversions - Aerospace | ST Engineering

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Freighter Conversions

As the world’s largest aircraft MRO specialist, we bring strong technical expertise and experience to the freighter conversion market. 

Leading the Way in PTF Conversions

Since embarking on our first passenger-to-freighter (PTF) conversion of a 727 aircraft into a cargo freighter in 1992, we have built up our capabilities and successfully established ourselves as a leader in PTF conversions for the widest range of aircraft platforms today.

These platforms include the 727–200, 757–200, 767–300 Boeing Converted Freighter (BCF), DC10/MD11, Airbus A300, A310, A330–200/A330–300 and A320/A321 aircraft.

To date, we have a track record of over 400 freighter conversions of Boeing and Airbus aircraft and we operate an extensive MRO network to support our global customer base. Our subsidiary, Elbe Flugzeugwerke GmBH (EFW), has performed more freighter conversions of Airbus aircraft than any other company in the world.

We are the only provider in the world offering both Boeing and Airbus conversions through our own Supplemental Type Certificate developed using original OEM engineering data.

In addition, to help address the issue of increasing demand for air freight coupled with shortage of aircrew,  we are looking into unmanned freighter solutions to develop more value-added services and options for the operators.

Our Conversion Capabilities

  • Boeing 757-200SF PTF Centre of Excellence

    As a leader in the market, we operate a Boeing 757–200SF PTF Centre of Excellence equipped with the highest quality capabilities. All 757–200 PTF conversions are carried out via licensing agreements with Boeing, the original equipment manufacturer. Today, we hold the largest 757–200 PTF orders to-date, with over 140 firm orders since the first DHL programme was launched in 1999. 

    In 2013, we initiated a 15-pallet solution for the 757–200SF PTF conversion and we secured a launch contract with SF Airlines for five 757–200SF PTF in February the next year. We have since obtained the supplemental type certificates from the US Federal Aviation Administration (FAA), China Aviation Administration of China (CAAC) and the European Aviation Safety Agency (EASA) for this PTF conversion. This supplemental type certificate is based on Boeing’s production freighter as well as our existing FAA-approved 14-pallet supplemental type certificate for 757–200SF PTF conversions, which is also the only supplemental type certificate developed based on Boeing’s licensed passenger and freighter data. 

    We have a 14½-pallet supplemental-type certificate solution jointly developed with Boeing and certified by the US FAA. Separately, a 14-pallet FAA-approved supplemental-type certificate solution has been developed in-house with data licensed from Boeing. 

    We also provide a 15-pallet supplemental-type certificate solution developed in-house with data licensed from Boeing, and certified by the US FAA, CAAC and the EASA. At the same time, customers can also opt for an 8-pallet/80-passenger cargo-passenger combi solution developed in-house with data licensed from Boeing and certified by both the US FAA and EASA.

  • Airbus A330 Passenger-to-Freighter (P2F)

    In 2012, we signed an agreement with Airbus and Elbe Flugzeugwerke for the launch of the A330P2F conversion programme. In this tripartite work share, we are the leader in engineering development while Elbe Flugzeugwerke heads the industrial phase and is responsible for marketing and sales activities. 

    The A330P2F programme includes two variants – the A330–200P2F and the larger A330–300P2F. Of the two models, the larger A330–300P2F will be particularly suitable for integrators and express carriers due to its high volumetric payload capability with lower-density cargo. With 26 main-deck positions, it is capable of carrying 61 metric tonnes of payload. 

    Meanwhile, the A330–200P2F will be optimised for higher-density freight and longer range performance, with up to 23 main deck positions and capable of carrying 59 metric tonnes of payload. 

    At the end of 2014, EgyptAir Cargo became the launch customer with a contract signature for two A330P2F conversions, plus an option for two additional aircraft afterwards.

  • Airbus A320/A321 Passenger-to-Freighter (P2F)

    In 2015, we signed another agreement with Airbus and Elbe Flugzeugwerke for the launch of the A320/A321P2F conversion programme. Under this agreement, ST Engineering will lead the A320/ A321P2F engineering development, working in tandem with Airbus and Elbe Flugzeugwerke, with conversions to be undertaken in our global network of facilities. 

    The A320/A321P2F programme includes two variants – the A320P2F and the larger A321P2F. The unique fuselage design of the A320 and A321 allows bulk cargo or containerised freight to be carried in belly holds, delivering more loading flexibility.

    The A320P2F, with 11 main-deck positions, is capable of carrying 21 metric tonnes of payload, while the A321P2F, with 14 main-deck positions, is able to carry up to 27 metric tonnes. 

    Upon completion, the A320/A321P2F are the only freighters in this narrow-body segment to feature digital fly-by-wire technology with the ability to accommodate containerised or palletised lower deck cargo, which is more volume efficient than bulk loading in the lower hold.