The new technology will allow the aircraft to remain airborne for up to 22 hours continuously.
Airbus has begun testing new fuel, cooling, and onboard systems for the A350-1000ULR (Ultra Long Range) aircraft, preparing it for commercial flights of record duration. The upgraded fuel system, increased flight range, and ability to remain airborne for nearly a full day are currently undergoing real-world testing.
Airbus completed the first test flight of the A350-1000ULR — the aircraft selected by Australian airline Qantas for its ambitious Project Sunrise program.
The test took place in Toulouse. The aircraft spent three hours and 43 minutes in the air, climbing to an altitude of about 12.5 kilometers. This machine became the first of twelve A350-1000ULR aircraft ordered by Qantas and marked the beginning of the certification testing program for a version aimed at expanding the limits of long-haul civil aviation.
The A350-1000ULR modification was specifically designed for non-stop flights between Sydney and London — a route approximately 18,500 kilometers long. To achieve such range, Airbus engineers redesigned the aircraft structure and included an additional central fuel tank in the tail section of the fuselage. As a result, the fuel capacity was significantly increased, and the maximum flight range grew by about 1,800 kilometers compared to the standard A350-1000. This solution will allow the aircraft to remain airborne for up to 22 hours continuously, enabling direct flights between Australia and Europe without intermediate stops — something that was previously considered nearly unattainable for commercial aviation.
During the first flight, Airbus specialists evaluated the overall flight characteristics of the aircraft and the performance of the new fuel system. This flight also marked the beginning of a two-month testing program necessary for certifying all the changes made before the aircraft enters service.
Meanwhile, the second A350-1000ULR is already in the final stages of assembly. Airbus reports that the aircraft will soon leave the paint shop and receive engines, as well as a premium four-class cabin layout. This machine is expected to be the first A350-1000ULR delivered to Qantas in April 2027.
The Project Sunrise program is considered one of the most ambitious projects in modern civil aviation. Its goal is to eliminate traditional range limitations and make the longest non-stop passenger flights in the world possible.
