Boeing shares slide 8% in premarket trading after FAA grounds dozens of 737 Max 9s

In this article BA Follow your favorite stocks CREATE FREE ACCOUNT Economy area of United Airline's new Boeing 737 MAX 9 aircraft is at A20 gate of Denver International Airport in Denver, Colorado on Tuesday, May 23, 2023. Hyoung Chang | Denver Post | Getty Images Shares of Boeing fell in premarket trade Monday, as markets digested the news that the Federal Aviation Administration had ordered a temporary grounding of dozens of Boeing 737 Max 9 aircraft.

Shares were down 8% shortly after premarket trading opened at 4 a.m. ET. The Federal Aviation Administration on Saturday announced an emergency airworthiness directive affecting 171 planes worldwide and applying to U.S. airlines and carriers operating in U.S. territory. The order was made after a piece of a plane blew out in the middle of an Alaska Airlines flight on Friday.

Images shared on social media showed a hole in the side of the aircraft and passengers using oxygen masks. Alaska Airlines Flight 1282 returned to Portland shortly after departing for Ontario, California. This is a developing news story and will be updated shortly. — CNBC's Leslie Josephs contributed to this report..