US aircraft manufacturer Boeing has struck a deal to buy Spirit AeroSystems, the company announced on Monday. The all-stock deal has an equity value of about $4.7 billion or $37.25 per share, Boeing said. The total transaction value is around $8.3 billion, including Spirit’s last reported net debt. Boeing’s acquisition of Spirit will include substantially all Boeing-related commercial operations, as well as additional commercial, defence and aftermarket operations. Separately, Spirit and Airbus SE have also entered into a binding term sheet, under which Airbus will acquire certain commercial w…