Rolls-Royce has signed a $598m (£371m) contract with the US Department of Defense for 268 AE 1107C engines for US Marine Corps and Air Force V-22 aircraft.
In the first year, Rolls-Royce will deliver 70 engines valued at $151m. The contract includes four additional option years, with deliveries expected to total 268, including spare engines.
Rolls-Royce is the sole manufacturer of the engines for the V-22 and has delivered 550 AE 1107C engines to the US Department of Defense.
The Rolls-Royce turbo shaft engines help the tilt-rotor aircraft to take off and land like a helicopter, and to rotate its engines forward to fly like an aircraft.