Finnair firmed up an order for eight further Airbus A350 XWB aircraft, which means additional Trent XWB engine business worth US$450m at list prices, for Rolls-Royce. The aircraft are in addition to 11 Airbus A350 XWBs that the airline already has on order, powered by the same engine. Finnair was the first airline to select the A350 XWB and will be the first European airline to receive the aircraft. The Trent XWB is the world’s most efficient large civil aero engine, and the fastest-selling widebody engine ever with more than 1,500 engines already sold. It will power the first A350 XWB into service later this year.