Boeing whistleblowers testify about safety concerns, highlighting issues with the 777, 787, and 737 Max aircraft.

Quality engineer Sam Salehpour alleges improper fuselage gap fillings on Boeing planes.

Former engineer Ed Pierson raises alarm about the production issues that could have impacted the safety of the 737 Max.

Senators and the FAA show a commitment to addressing the raised safety issues, promising further hearings and legislative action.

The FAA vows to ensure Boeing makes significant safety improvements, while Boeing emphasizes its dedication to safety culture.

The allegations contribute to Boeing's challenges including a CEO change and a significant drop in share value.

The FAA is actively investigating the claims as lawmakers express serious concerns over the company's safety practices.