# The Airbus A350-1000ULR is the longest-range commercial twin-engine aircraft ever built.

*aerospace · news · 2026-04-18 · Simple Flying*

## Key points

- The A350-1000ULR adds a permanent 20,000-liter rear center fuel tank for nearly 10,000 NM range.
- Qantas's A350-1000ULR will feature just 238 seats, including both first class and economy offerings.
- Reinforced landing gear and taller blended winglets optimize the aircraft for ultra-long-range, heavier takeoff loads.
- The A350-1000ULR's rear center tank design echoes the A321XLR's integrated internal tank concept.
- Qantas plans to begin Project Sunrise A350-1000ULR flights in spring 2027 after October 2026 delivery.

**Companies:** Airbus, Qantas
**Countries:** Australia, France

[Read the full story on Simple Flying](https://simpleflying.com/secret-engineering-qantas-airbus-a350-1000ulr-20000-liter-fuel-tank-22-hour-flights-possible/)

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