The move to a different software, announced on Friday, which will affect 6,000 of its widely used A320 family of jets, must be carried out before the next routine flight, threatening cancellations or delays during one of the busiest travel…

The move to a different software, announced on Friday, which will affect 6,000 of its widely used A320 family of jets, must be carried out before the next routine flight, threatening cancellations or delays during one of the busiest travel…