American says it expects ‘some delays’ but a quick fix. Delta predicts ‘limited’ impact. United says it’s not affected.

The issue is thought to affect 6,000 planes, which will need to undergo an urgent software update or have computers replaced.

One of the world’s largest airplane makers said Friday that intense solar radiation may corrupt data critical to flight controls on a “significant number” of its most popular aircraft, prompting a swift response from several airlines. Airbus attributed the revelation to a recent analysis involving its A320 family of aircraft.

Some planes could be temporarily grounded after the airplane maker said solar radiation may corrupt data critical to flight controls.

Thousands of Airbus planes are returning to normal service after being briefly grounded following a warning that solar radiation could interfere with onboard computers.

A320 planes are flown by a number of domestic and international airlines, and the required software update could lead to "operational disruptions to passengers and customers," according to Airbus.