The Financial Post reports in its Monday edition that Europe's top aviation regulator said he is satisfied that changes to Boeing's 737 Max have made the plane safe enough to return to the region's skies before 2020 is out. A Bloomberg dispatch to the Post says that the comments from Patrick Ky, executive director of the European Union Aviation Safety Agency come even as a further upgrade his agency demanded will not be ready for up to two years. After test flights conducted in September, EASA is performing final document reviews ahead of a draft airworthiness directive it expects to issue next month. That will be followed by four weeks of public comment, while the development of a synthetic sensor to add redundancy will take 20 to 24 months. The software-based solution will be required on the larger Max 10 variant before its debut targeted for 2022, and retrofitted onto other versions. "Our analysis is showing that this is safe, and the level of safety reached is high enough for us," Mr. Ky told Bloomberg. The comments mark the firmest endorsement yet from a major regulator of Boeing's goal to return its beleaguered workhorse to service by year-end, following numerous delays and setbacks after two deadly crashes.