Boeing shares plunged during trading on Monday after a panel on a 737 Max 9 plane blew out last week, forcing dozens of the jets to be grounded.
The emergency incident happened on January 5 while an Alaska Airlines plane was flying at about 4,800 metres, six minutes after taking off from Portland, Oregon, bound for Ontario, east of Los Angeles.
Boeing shares were down more than 8 per cent at the end of the trading day.
Shares in Alaska Air Group were almost fully recovered after they plunged by more than 4 per cent when Wall Street opened.
Video from the National Transportation Security Board showed a hole where the door panel had dislodged.
It was found on Sunday near Portland, the NTSB said.
NTSB chairwoman Jennifer Homendy said the plane was not being used for long-haul flights to Hawaii because a warning light indicating a potential pressure problem went off during previous flights.
Ms Homendy painted a harrowing picture of Friday’s accident during her briefing.
She said a rush of air…
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