Boeing shares tumbled over 5 per cent by midday trading on Wall Street on Tuesday as a number of nations have grounded the company's 737 Max 8 jet.
This follows Sunday's Ethiopia Airlines plane crash that killed all 157 people on board.
The United Kingdom and China are among those to ground these planes and the European Aviation Safety Agency is the latest body to suspend flight operations.
But the US isn't following suit. The Federal Aviation Administration said it would examine data from the crash and act on those findings.
William Denselow reports:

Tehran threatens US businesses, Hegseth says next few days 'decisive'
China, Pakistan call for Iran peace talks, normal navigation in Strait of Hormuz
Two injured after fallen drone debris hits houses in Saudi Arabia
Bangladesh considers partial online classes amid energy crisis
Two killed in fire at Russian petrochemicals plant
Three UN peacekeepers killed in Lebanon as Israeli strikes pummel south
Russian attacks kill two, injure dozens
