Engines
Pratt Says Pending Lot 10 Deal for F-135 Will Reflect Lower Costs
The Low Rate of Initial Production Lot 10 contract is due to be finalized "relatively soon."
Pratt & Whitney produces the F-135 engine at factories in Middletown, Connecticut, and West Palm Beach, Florida. [Photo: Pratt & Whitney]
Pratt & Whitney produces the F-135 engine at factories in Middletown, Connecticut, and West Palm Beach, Florida. [Photo: Pratt & Whitney]

Pratt & Whitney says it is “cleaning up loose-ends” with the U.S. Joint Program Office (JPO) for a Low Rate of Initial Production (LRIP) Lot 10 production contract to supply F135 engines for the F-35 fighter and expects the agreement to be sealed “relatively soon.” According to Mark Buongiorno, the U.S. manufacturer’s F135 program vice president, the latest contract will reflect progress it claims to have made in reducing the cost of producting the powerplant.


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