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.

Read abou the latest development in the potential $4.7 billion all-stock transaction for Boeing's acquisition of Spirit AeroSystems

Spirit AeroSystems ( NYSE: SPR) on Monday provided an estimate of quarterly revenue that is greater than what Wall Street analysts on average expect. The company’s biggest customer, planemaker Boeing ( NYSE: BA ), restarted production to drive the revenue gains.

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.

Spirit AeroSystems Holdings, Inc. (NYSE: SPR) today announced that, at the special meeting of its shareholders held earlier today, its shareholders voted to approve the proposed acquisition of Spirit AeroSystems by The Boeing Company.

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