A former senior manager at Boeing's 737 plant in Seattle has raised new concerns over the safety of the company's 737 Max.
The aircraft, which was grounded after two accidents in which 346 people died, has already been cleared to resume flights in North America and Brazil, and is expected to gain approval in Europe this week.But in a new report, Ed Pierson claims that further investigation of electrical issues and production quality problems at the 737 factory is badly needed.
Regulators in the US and Europe insist their reviews have been thorough, and that the 737 Max aircraft is now safe.
Lion Air flight JT610 crashed into the sea off Indonesia in October 2018. Five months later, Ethiopian Airlines flight ET302 came down minutes after take-off from the Ethiopian capital Addis Ababa.