A global safety alert affecting the Airbus A320 family, which is said to be the backbone of India’s commercial aviation, has forced Indian carriers into stringent inspections, minor schedule changes and urgent software resets. What began as an isolated technical concern has now unfolded into a coordinated, industry-wide exercise involving Airbus, the European Union Aviation Safety Agency (EASA), the Directorate General of Civil Aviation (DGCA), and Indian airlines operating the A320 fleet.
At the heart of the issue is a potential “solar radiation risk” that could corrupt data linked to critical flight-control functions. While no accidents or near-misses were reported in India, regulators have insisted on immediate precautionary action.
What triggered the global alert, and why experts say the glitch is serious
The chain of events began after Airbus detected an instance where intense solar radiation may have interfered with data processing in a specific part of the aircraft’s control logic. This vulnerability came to light following an incident involving an A320, after which Airbus issued an Alert Operators Transmission (AOT) and worked with EASA on an Emergency Airworthiness Directive.
Aviation expert Harsh Vardhan described the nature of the glitch as “serious”. He also explained that the affected system helps maintain the aircraft’s pitch and altitude.
“It’s a very serious glitch, and I’m glad it was detected in time, because it could have resulted in a serious catastrophe. It’s because the elevator and dial-tone control system, which is showing the problem due to this glitch, controls the aircraft’s levelling. Altitude maintenance is performed by this control mechanism. And suddenly, if it becomes uncontrolled, it starts nosediving. And a pilot sometimes doesn’t have control over it. Luckily, the incidents that were noticed were rectified on their own; otherwise, anything could have happened,” Harsh Wardhan told ANI.
He added: “Given multiple instances, an immediate inspection was necessary. They then realised that it is a fleet problem, not an individual aircraft issue, so grounding is important and the right decision. It should be done as quickly as possible because, apparently, they upgraded the software that is causing this problem and are now reverting to the original version…”
“This issue will be fixed soon, but it will still be monitored because this problem has recently reappeared, and we need to observe how the aircraft continues to behave after the modification if there is any repetition of this nature…”.
DGCA’s airworthiness directive echoes this caution. It prohibits the operation of specific A319, A320 and A321 variants until the mandated modification is completed. The list covers dozens of models flown by Indian airlines.
DGCA issues safety directive for Airbus aircraft amid key software update
How Indian airlines are coping: Resets, delays and a race against the compliance clock
With nearly 6,000 A320-family aircraft worldwide needing modification, Indian carriers have moved quickly to avoid large-scale disruption.
Air India, which operates one of the country’s largest A320 fleets, said over 40 per cent of its affected aircraft have already undergone the mandatory software-hardware realignment.
Its engineering teams, the airline said, have been “working round-the-clock” in line with the EASA timeline. There have been no cancellations so far, though minor delays and rescheduling have occurred on some routes. Passengers have been advised to check updated flight information.
IndiGo, India’s largest airline and the biggest operator of A320 aircraft globally, has completed updates on about 60 per cent of its fleet. The carrier confirmed that the maximum delay reported was “around 30 minutes” and that no cancellations had occurred.
“We regret any inconvenience this unforeseen situation may cause to our customers and appreciate their understanding. IndiGo is committed to the safety of its customers and staff, and treats safety as its topmost priority,” said IndiGo in a statement.
Both airlines emphasised that their ground staff are assisting passengers and that schedule integrity has largely been preserved despite the high volume of aircraft undergoing checks.