Boeing shares fall after door blown out of plane mid-flight

Parts supplier Spirit AeroSystems also affected after US regulators ground 737 Max 9s with door plugs

• Business live – latest updates

Shares in aircraft manufacturer Boeing and parts supplier Spirit AeroSystems have fallen amid renewed fears over the safety of its 737 Max planes after an Alaska Airlines flight was forced into an emergency landing on Friday.

Part of the jet’s fuselage that was ripped out in midair was found on Sunday in the back yard of a house in Portland, Oregon.