Investing.com — Spirit AeroSystems (NYSE:) on Tuesday, November 5, raised concerns about its ability to continue operations, sparking questions about the implications for Boeing (NYSE:)’s planned acquisition. In its third-quarter financial report, the aerospace manufacturer disclosed “substantial doubt about the Company’s ability to continue as a going concern exists.” “The Company will require additional liquidity to continue its operations over the next 12 months,” the filing added. Spirit AeroSystems reported