Rolls-Royce said on Monday, July 9 that it had won an important contract to service helicopter engines for the U.S. army, according to AFP.

"Rolls-Royce has received a contract valued at $183 million (149 million euros) to service M250 engines, which power the U.S. Army's fleet of OH-58D Kiowa Warrior scout helicopters," it said in an official statement.

The London-listed group added that the contract, to support 500 M250 engines on more than 300 aircraft, would begin in July 2012 for a year. The U.S. army has options to extend the deal for another four years.