Airbus Issues Urgent Warning: Solar Radiation Can Corrupt A320 Flight Controls

In a major safety alert that is rippling through the global aviation industry, Airbus has issued an urgent warning to operators of its best-selling A320 family aircraft, revealing that “intense solar radiation” can corrupt data critical to the plane’s flight control systems. The disclosure follows a serious in-flight incident last month involving a U.S. carrier, prompting the European Union Aviation Safety Agency (EASA) to prepare an Emergency Airworthiness Directive (EAD) that is expected to mandate immediate fixes for thousands of aircraft worldwide.
“Analysis of a recent event involving an A320 Family aircraft has revealed that intense solar radiation may corrupt data critical to the functioning of flight controls,” Airbus confirmed in a statement released on Friday. “Airbus has consequently identified a significant number of A320 Family aircraft currently in-service which may be impacted.”
The vulnerability was discovered following an investigation into a frightening event on October 30, 2025, involving a JetBlue Airbus A320 flying from Cancun, Mexico, to Newark. According to preliminary reports, the aircraft experienced an “uncommanded and limited pitch down event”—a sudden, sharp descent without pilot input—that forced the crew to declare an emergency and divert to Tampa, Florida. Several passengers were reportedly injured during the maneuver.
Technical analysis suggests the root cause lies in the aircraft’s Elevator Aileron Computer (ELAC). Investigators found that specific hardware versions (ELAC B) running certain software (L104) are susceptible to interference from high-energy solar particles. When exposed to intense solar radiation—common at high cruising altitudes during solar storms—the system’s data integrity can be compromised. In a worst-case scenario, this corruption can trigger an uncommanded movement of the elevators, potentially causing the aircraft to exceed its structural limits.
The scale of the recall is immense. Industry sources estimate that approximately 6,000 aircraft—representing nearly half of the global active A320 fleet, including both the older “ceo” and newer “neo” models—could require urgent updates. Airbus has issued an Alert Operators Transmission (AOT) instructing airlines to either rollback to an earlier, stable version of the software or replace the affected hardware entirely.
Airlines are already bracing for significant operational disruption. The required maintenance procedure is estimated to take at least three hours per aircraft. With the holiday travel season approaching, carriers like Wizz Air, IndiGo, and Air India have already warned passengers of potential delays and cancellations as they ground fleets to implement the safety patches.
“This is a rare environmental-linked threat rather than a conventional mechanical fault,” an aviation safety expert noted. “But because the A320 is the workhorse of modern aviation, even a small window of vulnerability creates a massive logistical headache.”