One of the A350-1000ULR’s main innovations is the addition of a rear centre fuel tank capable of carrying more than 20,000 extra litres of fuel. This increased capacity significantly extends the range of the standard model and enables flights lasting up to 22 hours. The aircraft is also equipped with specially adapted systems that precisely control fuel storage, pressure and transfer throughout the different stages of a journey.
The tests verified the performance of the pumps, indicators, ventilation mechanisms and the system responsible for managing fuel transfers between the various tanks. Engineers assessed their response at different altitudes and under a range of operating conditions to ensure safe and efficient performance during exceptionally long missions. The campaign also included comprehensive inspections of the aircraft’s newly installed components.
Another important area of evaluation was the onboard galley refrigeration system. The new technology uses lighter, more efficient equipment capable of maintaining the required conditions throughout long-duration flights. Its introduction delivers a weight saving of approximately 300 kilograms. After making its debut on the A350-1000ULR, the system is expected to be progressively incorporated across the wider A350 family.
The aircraft used for the trials, identified as MSN707, was fitted with approximately five tonnes of specialised equipment to collect data during each operation. In July, it completed a demanding flight from Toulouse to Melbourne, followed by the return journey. The mission enabled Airbus to examine the aircraft’s performance over more than 20 continuous hours and confirm its ability to undertake operations comparable to those planned for commercial service.
The A350-1000ULR is powered by two Rolls-Royce Trent XWB-97 engines and has an increased maximum take-off weight. It also incorporates aerodynamic improvements and advanced materials that help optimise fuel consumption. According to the manufacturer’s projections, the A350 family can deliver a 25 per cent reduction in fuel use and carbon emissions compared with previous-generation aircraft.
Qantas has ordered 12 aircraft for Project Sunrise, an initiative intended to connect Australia’s east coast directly with destinations including London and New York. Non-stop services from Sydney could reduce journey times by up to four hours compared with current one-stop itineraries. Tickets for the first Sydney–London flights are expected to go on sale in February 2027, with commercial services scheduled to begin later that year.
Each aircraft will feature a spacious 238-seat configuration across four travel classes. The cabin will include six First Class suites, 52 Business Class seats, 40 Premium Economy seats and 140 Economy Class seats. It will also feature a dedicated wellbeing zone where passengers can stand, stretch and move around during the longest journeys.
The interior has been designed to address one of the greatest challenges of ultra-long-haul travel: protecting the comfort and wellbeing of passengers and crew. Lighting, ventilation, storage areas, seating and onboard service have all been carefully developed for journeys that may exceed 20 hours. The aim is to reduce fatigue and provide a more comfortable experience from departure through to arrival.
Following the completion of the evaluations, MSN707 will be refitted with Qantas’ commercial cabin configuration. Meanwhile, additional aircraft continue to progress along the Airbus assembly line. The successful completion of this stage brings the aviation industry closer to a new generation of direct services capable of shortening journeys, eliminating waits at intermediate airports and transforming travel between Australia, Europe and North America.
