Airbus has acknowledged that thousands of its aircraft require rapid modifications after the discovery that intense solar and cosmic radiation can interfere with a critical flight control computer. The manufacturer confirmed that about six thousand planes are affected worldwide. Most will be able to receive a software update while older models will require new hardware and temporary withdrawal from service.
The issue centres on the ELAC computer which governs the elevators and ailerons. These surfaces control an aircraft’s ability to climb descend and roll. The aircraft involved are part of the A320 family which includes the A318 A319 A320 and A321. They are among the most widely used single aisle aircraft in the world and form the backbone of short haul fleets for many airlines.
The problem came to light after a JetBlue A320 experienced a sudden loss of altitude during a flight in the United States in late October which led to an emergency landing in Florida. Several passengers were injured. Investigators later linked the event to data corruption that may have been caused by high altitude radiation interfering with the ELAC system.
The European Union Aviation Safety Agency has issued an emergency airworthiness directive requiring airlines to install the updated software or replace hardware before continuing passenger flights. The Civil Aviation Authority in the United Kingdom warned that passengers should expect some level of cancellations and delays as airlines ground aircraft for the necessary work.
Airlines across Europe and Asia have begun adjusting schedules. Wizz Air confirmed that a number of its aircraft need updates and that maintenance windows have already been planned. Air India has also warned of potential disruptions. British Airways appears to be only lightly affected while EasyJet has acknowledged that passengers will face some delays.
Kenya Airways operates several Airbus A319 and A320 aircraft on regional and continental routes. Aviation sources indicate that at least part of its fleet is likely to require the software update. None of its aircraft are understood to fall into the oldest category that requires hardware replacement. Even so the airline may need to temporarily reshuffle schedules to accommodate the mandated maintenance work.
Airbus has apologised to airlines and passengers, stating that precautions must be prioritised to ensure continued safety. The manufacturer said the discovery reinforces the need for constant vigilance as aircraft systems face ever changing environmental challenges.
Regulators have urged passengers with upcoming flights to check directly with their airlines. Airlines are required to provide care and support during extended delays.
