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.
Airbus said Friday that an examination of the JetBlue incident revealed that intense solar radiation may corrupt data critical to the functioning of flight controls on the A320 family of aircraft.
The FAA joined the European Union Aviation Safety Agency in requiring airlines to address the issue with a new software update. More than 500 U.S.-registered aircraft will be impacted.
The EU safety agency said it may cause “short-term disruption” to flight schedules. The problem was introduced by a software update to the plane’s onboard computers, according to the agency.
Airbus CEO Guillaume Faury apologized to customers after the required fix led to “significant logistical challenges and delays.”
“Our teams are working around the clock to support our operators and ensure these updates are deployed as swiftly as possible to get planes back in the sky and resume normal operations, with the safety assurance you expect from Airbus,” he wrote in a message posted on LinkedIn on Saturday.
A JetBlue Airways Airbus A320, left, passes a Spirit Airlines Airbus A320 as it taxis on the runway, July 7, 2022, at the Fort Lauderdale-Hollywood International Airport in Fort Lauderdale, Fla. (AP Photo/Wilfredo Lee, File)
via Associated Press
FAA Statement
The Federal Aviation Administration issued an Emergency Airworthiness Directive (EAD) for certain Airbus A319 and A320/321 airplanes.
The EAD requires replacing or modifying the software that controls the airplanes’ elevator ailerons. The EAD is effective…
— The FAA ✈️ (@FAANews) November 29, 2025
Thanksgiving disruptions in U.S.
In Japan, All Nippon Airways, which operates more than 30 planes, canceled 65 domestic flights for Saturday. Additional cancellations on Sunday were possible, it said.
The software change comes as U.S. passengers were beginning to head home from the Thanksgiving holiday, which is the busiest travel time in the country.
American Airlines has about 480 planes from the A320 family, of which 209 are affected. The fix should take about two hours for many aircraft and updates should be completed for the overwhelming majority on Friday, the airline said.
On Saturday, the airline said in a statement that only four planes still needed to be updated and that it “expects no further operational impact.”
Air India said on X that its engineers were working on the fix and completed the reset on more 40% of aircraft that need it. There were no cancellations, it said.
Delta said it expected the issue to affect less than 50 of its A321neo aircraft. United said six planes in its fleet are affected and it expects minor disruptions to a few flights. Hawaiian Airlines said it was unaffected.