Textron Aviation Expands ProAdvantage Program For Hawker Jets Textron Aviation announced that it is expanding the popular ProAdvantage Program for Hawker business jets. The ProAdvantage product support program has been expanded to encompass alot more Hawker jet models. The coverage envelops jets from the Hawker 125, 400, 750, 800, 850 and 900 series. This is great news for Hawker business jet owners because previously the ProAdvantage program was more of an exclusive support system for Cessna Citation jets for their customers. With Textron Aviation as the umbrella company expansion of service support becomes alot easier for broader base of the member brands.