Pratt & Whitney, a division of United Technologies Corp., says it plans to spend up to $100 million by 2022 at its West Palm Beach, Florida, facility to support the company's defense work.

Current work at the facility includes testing the F-135 engine for the F-35 Lightning II aircraft. The investment will support expanding the campus and adding equipment for manufacturing engineering, and developing new technologies.

Pratt & Whitney opened its original 7,000-acre facility in 1958. In 2014, the company opened a 97,000-square-foot engine production facility.

The company says it has made more than $188 million in capital investments at the facility since 2000 to support production of its geared turbofan commercial engine, the GTF.

Pratt & Whitney's programs use more than 100 suppliers across the southeast United States, including 23 suppliers based in Florida.