Airlines Limit Disruptions from Airbus A320 Software Glitch

An Airbus A320.

Photographer: Joan Valls/Urbanandsport/NurPhoto/Getty Images

Airlines across the world raced to keep their fleet operating after a major software glitch forced an urgent update for Airbus SE’s most widely flown aircraft, with the rapid response avoiding a major meltdown during a crucial holiday-travel season.

Within less than 24 hours of Airbus and the European Union Aviation Safety Agency issuing an emergency directive, carriers including American Airlines Group Inc., India’s IndiGo and easyJet Plc in the UK — among the biggest operators of the A320 — had reverted to a previous version of the software for the bulk of their fleets, allowing them to maintain largely normal operations.