Parker Hannifin Corp., which makes fuel, hydraulics and flight control systems for the plane, expects 500 ARJ21s could earn it $275 million in revenue and at least that much in after-sales services.

Altair moved the air condition system from the engine bay to the roof to make room for the hydraulic hybrid system in its LCO-140H bus. Photo: Altair Product design.

Eaton also holds a contract for the helicopter\'s hydraulic power generation system, integrated fuel system, and fluid conveyance package.