British Airways will invest millions of pounds in its maintenance engineering base at Cardiff Airport.
The airline says it's expanding one of its three bays to accommodate larger, long-haul Airbus A350 aircraft.
Work will start next year and when completed by 2026, it will see the site go from one to two fully flexible bays, allowing for more complex and detailed maintenance.
Andy Best, chief technical officer at British Airways, said: "Our Welsh engineering base is an integral part of our maintenance operation, and this investment, as part of our wider maintenance strategy, will ensure that British Airways Engineering Wales continues to play a key role for many years to come."
"The expanded facility provides us with greater flexibility and control over our heavy maintenance activity on both the Boeing and Airbus long-haul fleets, ensuring more efficient planning and execution."
Around 480 workers are based at the maintenance centre in Tredogan, near Rhoose, which at the moment, can only handle Boeing 777 and 787 aircraft types.
BA says the expansion - part of a £7 billion transformation programme - will allow it to facilitate more aircraft types and make its maintenance operations more efficient, as well as affirming its commitment to the future of its local operations.
Economy Secretary, Rebecca Evans, said: "This is very welcome news from British Airways, paving the way for further growth at their Cardiff site and its highly skilled workforce."
"This announcement once again demonstrates the vital role that Cardiff Airport plays in bringing investment into Wales and in growing our aerospace maintenance, repair and overhaul sector, where we see continued international interest."
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