Dhaka, Nov. 30 -- Global airlines scrambled on Saturday to fix a software glitch on their Airbus A320 jets as a recall by the European planemaker temporarily grounded aircraft in Asia and Europe and threatened travel in the United States during the busiest weekend of the year.

The recall of 6,000 planes, covering more than half of Airbus' global A320-family fleet, is among the broadest in its 55-year history and is a blow for the planemaker weeks after the A320 overtook the Boeing 737 as the most-delivered model.Airlines worked through the night to make fixes after Airbus issued the emergency recall to 350 operators around the world, and global regulators directed carriers to remedy the software problem before resuming flights.That appea...