Another Boeing employee has come forward with allegations of major safety issues at the airline company.

An engineer who worked on Boeing’s 787 Dreamliner, Sam Salehpour, provided a whistleblower statement to The New York Times.

Salehpour alleges that the airplane manufacturer is connecting some sections of the plane’s fuselage in an extremely unsafe way.

The engineer warns the situation could lead to planes breaking apart in midair over time.

Salehpour said during a conference call involving his lawyers that he “literally saw people jumping on the pieces of the airplane to get them to align,” reports CNN.