Naval Air Systems Command has provided Raytheon Technologies-proprietary engine builder (NYSE: RTX ). Pratt and Whitney a $619 million contract modification to purchase lot 17 F-35 propulsion components and produce additional systems for the 15th and 16th fighter groups.

Pratt & Whitney will use a portion of the funds to acquire legacy items for the 17th production aircraft in support of U.S. and foreign military sales customers and non-Defense Department partners, the Pentagon said Thursday.
The DOD added that the business will provide four F135-PW-600 propulsion systems to power the Lot 15 and 16 aircraft of non-US DOD partners and FMS customers.
The department expects work under the contract modification to be completed in October 2030.