The Navy on Tuesday awarded Pratt & Whitney a $592 million contract modification for F-35 engines, according to a Defense Department statement.

The modification is to the previously-awarded fixed-price-incentive-firm target Low-Rate Initial Production (LRIP) Lot VII F135 propulsion systems contract. This modification provides for the procurement of:

The Marine Corps' F-35B. Photo: Lockheed Martin.
The Marine Corps’ F-35B. Photo: Lockheed Martin.

* 19 F135-PW-100 conventional takeoff and landing (CTOL) propulsion systems for the Air Force;

* Six F135-PW-600 short takeoff and vertical landing (STOVL) propulsion systems for the Marine Corps;

* Four F135-PW-100 propulsion systems for the Navy;

* Five additional F135-PW-100 propulsion systems;

* One F135-PW-100 spare propulsion system; and

* One F135-PW-600 propulsion system for international partners.

The F-35 is developed by Lockheed Martin [LMT] with subcontractors BAE Systems and Northrop Grumman [NOC]. Pratt & Whitney is a division of United Technologies Corp. [UTX]