The US Department of Defence (DoD) has awarded Pratt & Whitney a contract modification to supply the ninth and tenth batch of F135 engines to power the F-35 Lightning II joint strike fighter (JSF) aircraft.
Under the agreement, the company will supply 66 and 101 engines in the ninth and tenth batch respectively, along with providing programme management, engineering support and spare modules.
USAF F-35 program executive officer Lieutenant General Chris Bogdan said: "This agreement for the next two lots of F135 engines continues to drive down costs and that's critical to making the F-35 more affordable for the US military and our allies.
"We are ramping up production and witnessing tangible results."
The company has reduced average prices for the LRIP 9-10 conventional takeoff and landing and carrier variant (CTOL / CV).
Pratt & Whitney F135 Engine Programme vice-president Mark Buongiorno said: "Pratt & Whitney and our supply base are focused on delivering the F135 propulsion system to the warfighter at or below the cost targets.
"We continue to make good on the commitments we have made to our US and International customers."
The total award value is expected to be disclosed after the low rate initial production (LRIP) 9 and 10 contracts are finalised.
Deliveries of LRIP 9 engines will take place this year and those of LRIP 10 engines will begin in 2017.
Last year, the US DoD awarded an F-35 aircraft maintenance and support contract to Pratt & Whitney.
Valued at $214m, the contract covers support services for propulsion systems, supply of hardware, and training course material and equipment.
Valid until April 2019, the deal covers the fighter aircraft fleet of the US Navy, Air Force and Marine Corps, as well as global users.
Image: The Pratt & Whitney F135 engine. Photo: courtesy of United Technologies Corporation Pratt & Whitney Division.