Abstract
The introduction of the Airbus A350-900 (A359) and the Boeing B787-9 (B789) have enabled airlines to operate ultra-long-range services. Using a mixed methods research design, this study has examined the air cargo-carrying potential of Singapore Airlines Airbus A350-900XWB (A359) and United Airlines Boeing B787-9 (789) aircraft on their ultra-long-haul San Francisco to Singapore and the Singapore to San Francisco air routes. The qualitative data was analysed using document analysis, and the air cargo payload was modelled by simulation. The air cargo-carrying potential of the two aircraft types was significantly influenced by enroute weather. In the event of eastbound winds, the Singapore Airlines Airbus A350-900XWB air cargo payload was 16.9 tonnes and the United Airlines Boeing 787-9 was 11.5 tonnes, when these flights had a full passenger payload. In the case of westbound winds with a full passenger payload, the Singapore Airlines Airbus A350-900XWB air cargo payload was 13.1 tonnes and the United Airlines Boeing 787-9 was 7.9 tonnes. When there were no winds on the air routes, the Singapore Airlines Airbus A350-900XWB offered 15.0 tonnes and the United Airline Boeing 787-9 offered 9.7 tonnes of air cargo payload, respectively.