Airlines around the world canceled and delayed flights heading into the weekend to fix software on a widely used commercial aircraft after an analysis found the computer code may have contributed to a sudden drop in the altitude of a JetBlue plane last month.

Airlines around the world reported short-term disruptions heading into the weekend as they fixed software on a widely used commercial aircraft, after an analysis found the computer code may have contributed to a sudden drop in the altitude of a JetBlue plane last month.

A major winter storm disrupted air travel in several big cities in the days after Thanksgiving, including Chicago, Boston, Detroit, Minneapolis and New York City.

Fewer than 50 planes in Atlanta-based Delta‘s fleet will be affected by an Airbus modification requirement, a spokesperson told The Atlanta Journal-Constitution on Friday afternoon.

Aviation regulators have ordered urgent inspections of the Airbus A320 family of jets. The order follows a JetBlue plane's experience of an uncontrolled "pitch down" event last month.

Airbus identified an apparent issue relating to "intense solar radiation," which "may corrupt data critical to the functioning of flight controls" and recommended an emergency software update to the A320 family of aircraft – a common passenger plane for U.S. carriers.

Recent solar storms revealed a vulnerability in the computers that Airbus A320 family use to control the aircraft's altitude.

Airbus CEO Guillaume Faury apologized to customers after the required fix led to “significant logistical challenges and delays.”

Thousands of the most popular passenger aircraft in the world need emergency maintenance to protect from a problem that injured passengers and caused an emergency landing last month.

The airline says all of its impacted A320-series jets are now updated following a software directive that disrupted travel for passengers around the world.