A former senior manager at Boeing's 737's Seattle plant 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 further investigation of electrical issues and production quality problems at the 737 factory is badly needed. Guy Leitch is the editor of the authoritative industry magazine SA Flyer. Courtesy #DStv403