However, the planemaker is keeping its 2023 free cash flow forecast of $3 billion to $5 billion, CFO Brian West said at a conference organized by Wolfe Research.

Boeing has also begun to deliver "reworked" 737 jets out of its inventory after a manufacturing snafu involving supplier Spirit AeroSystems Holdings Inc forced the planemaker to halt deliveries of some jets.

Boeing's shares were up about 1% after briefly turning negative on Thursday.

(Reporting by Abhijith Ganapavaram and Shivansh Tiwary in Bengaluru; Editing by Shinjini Ganguli and Shounak Dasgupta)