Spirit AeroSystems expects to post higher-than-expected quarterly revenue, helped by production restarting at its biggest customer Boeing after a crippling strike, the U.S. aerospace giant said on Monday.

Spirit AeroSystems (NYSE:SPR) on Monday provided an estimate of quarterly revenue that is greater than what Wall Street analysts on average expect. The companys

Spirit AeroSystems Holdings’ management cited substantial doubt about its ability to continue due to cash flow and liquidity issues.

Spirit AeroSystems said on Monday it expects to post a higher-than-expected quarterly revenue, driven by restarted production at the aerospace supplier's biggest customer, Boeing. Shares of the company rose about 1% in premarket trading.