Textron Aviation is shelving development of the Hemisphere large-cabin business jet. Hemisphere could be revived at a later date, but for now it’s “on hold” because the Wichita-based manufacturer isn’t satisfied with progress on the development of the Safran Silvercrest engine that would power it. Further, Safran said its initial contract with Textron Aviation for the Silvercrest has been terminated. The troubled engine program, which caused French airframer Dassault to cancel the Falcon 5X in late 2017, has made progress on fixing the engine’s high-pressure compressor but so far is falling short of what Textron needs.