A modified fuel system, an extended range, and the ability to remain airborne for nearly a full day are now undergoing real-world testing. Airbus has completed the first flight of its A350-1000ULR, the aircraft selected by Qantas for its ambitious Project Sunrise program.

The test flight took place in Toulouse, France, where the aircraft spent three hours and 43 minutes in the air and climbed to more than 41,000 feet. The jet is the first of 12 A350-1000ULR aircraft ordered by Qantas and marks the beginning of a certification campaign for a variant designed to push the limits of long-haul commercial travel.

Engineering for longer range

The A350-1000ULR was developed to support nonstop flights between Sydney and London, a route spanning nearly 10,000 nautical miles. To achieve that range, Airbus engineers modified the aircraft’s structure to accommodate an additional rear center fuel tank. The extra capacity extends the aircraft’s range by roughly 1,000 nautical miles compared with a standard A350-1000.

That design change could allow the aircraft to remain airborne for as long as 22 hours, opening the door to direct flights between Australia and Europe that previously required at least one stop. During the maiden flight, Airbus crews evaluated overall aircraft performance and tested the redesigned fuel system architecture. The mission also marked the start of a two-month flight-test campaign aimed at certifying the aircraft’s modifications before it enters commercial service.

Testing critical systems

The certification effort extends beyond range and fuel capacity. Airbus will also validate a newly developed galley cooling system designed specifically for ultra-long-haul operations. The company says the system uses lighter and more efficient refrigeration equipment, helping reduce weight while supporting extended flight durations.

Engineers will also assess cabin ventilation and temperature-control performance during the testing campaign. Those systems play a critical role on flights that can keep passengers and crew onboard for nearly a full day. After certification work concludes, Airbus will retrofit the aircraft to Qantas’ final commercial specifications ahead of delivery preparations.

Meanwhile, production of the second A350-1000ULR is progressing through final assembly. Airbus said the aircraft is expected to emerge from the paint facility soon before receiving its engines and premium four-class cabin configuration. That aircraft is scheduled to become the first A350-1000ULR delivered to Qantas in April 2027.

Project Sunrise advances

Project Sunrise represents one of the aviation industry’s most ambitious efforts to eliminate distance barriers on long-haul travel. Qantas has committed to 12 A350-1000ULR aircraft for the program and has also ordered 12 standard A350-1000 jets for broader international operations.

The ultra-long-range aircraft joins a growing A350 lineup that includes the A350-900, A350-900ULR, and A350-1000 passenger variants. Airbus is also developing the A350F freighter, which is expected to complete its first flight later this year.

Demand for the A350 family remains strong. By the end of April 2026, Airbus had secured 1,579 orders from 68 customers worldwide. More than 700 A350 aircraft are currently in service with 41 operators, primarily on long-haul international routes.

For Airbus and Qantas, the successful first flight marks an important milestone as Project Sunrise moves closer to commercial operations and the prospect of nonstop Sydney-to-London travel.

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