Airbus Completes Work to Fix Majority of A320 Aircraft

Airbus said that of the around 6,000 potentially affected aircraft, the vast majority have now received the necessary fixes

Regulators had mandated some software and hardware fixes late last week.

Airbus said Monday that the majority of fixes required on A320 aircraft to protect against potential data issues from solar radiation have now been completed.

Regulators had mandated some software and hardware fixes late last week after it was discovered that interference from intense solar radiation had corrupted data used for flight controls on an Airbus jet operated by JetBlue Airways in October. The issue caused a sudden drop in altitude and forced the Cancun, Mexico, to Newark, N.J. flight to make an emergency landing at Tampa International Airport in Florida.

Airbus said Monday that of the total of around 6,000 potentially affected aircraft, the vast majority have now received the necessary modifications.

“We are working with our airline customers to support the modification of less than 100 remaining aircraft to ensure they can be returned to service,” it said in a statement.

Write to Dominic Chopping at dominic.chopping@wsj.com