A Boeing whistleblower is warning that fuselages of the 787 Dreamliner were not fastened together correctly, and could eventually come apart in mid-air after thousands of flights. The whistleblower, Boeing engineer Sam Salehpour, worked for the company for more than a decade. He stepped forward on April 9, accusing the planemaker of subpar safety standards and retaliation for identifying engineering issues.

According to The New York Times, Salehpour identified problems with how the large sections of the 787 Dreamliner's fuselage were fitted together. Salehpour alleges that, because different pieces of the fuselage come from different manufacturers, the sections weren’t the same shape when they were connected. 

In a statement to The New York Times, Boeing claimed that the process for assembling the plan has “no impact on the durability or safe longevity of the airframe.” The company also said that it has performed testing on the 787 Dreamliner, and doesn’t believe there is any pressing safety issue.

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Boeing has faced an onslaught of controversy so far in 2024, beginning with the blowout of a door plug aboard a 737 Max 9 shortly after takeoff in January. Since then, several other incidents with Boeing planes have cropped up, including a cracked cockpit on a Boeing 737-800 out of Japan, an engine failure on a 747-8 over Miami, a wheel that fell off on a 777-200 out of San Francisco, and most recently, a detached engine cover on a 737-800 out of Denver. 

The Federal Aviation Administration is investigating these latest claims from Salehpour, but has not released an official statement.