The European Union Aviation Safety Agency (EASA) has issued an Emergency Airworthiness Directive (EAD) addressing a software vulnerability in the Airbus A320 family.
The action follows an incident on October 30 involving JetBlue Airways flight 1230 (Airbus A320, registration: N605JB) from Cancun to New York/Newark, during which the aircraft descended unintentionally. The directive applies to the Airbus A319, Airbus A320, and Airbus A321.
After a brief decrease in altitude, the autopilot remains engaged and the aircraft can continue flying without issue. A preliminary assessment by Airbus indicates a possible malfunction of the ELAC (Elevator Aileron Computer). In the worst case, there is concern that the structural limits of the airframe could be exceeded.
By 9:00 a.m. Japan time on November 30, the effective date and time of the directive, affected ELAC units must be replaced or modified.
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