NEW DELHI — Pratt & Whitney has delivered the first 10 F117 engines to Boeing to power a fleet of C-17 transport aircraft destined for the Indian air force (IAF).

India signed a $4.1 billion contract with the U.S. in 2011 for the aircraft, making the country the largest C-17 export customer. The two governments finalized the Foreign Military Sales contract last June.

The first of the C-17s is going through a U.S. Air Force flight test program at Edwards AFB, Calif.

“Boeing is on track to deliver four more C-17s to the IAF this year and five in 2014,” says Dennis Swanson, vice president of international business development for Boeing Defense, Space & Security in India.

The C-17 is powered by four F117 engines, each rated at 40,440 lb. of thrust.

“Pratt & Whitney is delighted to be delivering the first batch of engines that will power the IAF’s C-17 fleet and we’re pleased to have them join the growing international fleet that flies this premium airlifter,” says Bev Deachin, vice president for military programs and customer support at Pratt & Whitney.

The C-17 transport is capable of taking off from a 7,600-ft. airfield carrying a payload of 160,600 lb., and flying 2,400 nm without refueling. 

The F117-PW-100 engine first entered service in 1993 and is a derivative of Pratt & Whitney’s PW2040 commercial engine. The engine has seen 10 million hr. of military service and 50 million hr. of commercial use, according to Deachin.

Boeing has delivered 250 C-17s featuring F117 engines worldwide, including 32 to international customers. The U.S. Air Force — including active-duty National Guard and Reserve units — has taken delivery of 218 aircraft.

Other customers include the U.K. Royal Air Force, the Qatar Emiri Air Force, the Royal Canadian Air Force, the Royal Australian Air Force, NATO’s 12-member Strategic Airlift Capability initiative and the United Arab Emirates Air Force.