On Saturday, the country's largest airline IndiGo said it is aware of a notification issued by Airbus, the manufacturer of the majority of their fleet, pertaining to the A320 family planes.

"We are working closely with Airbus to ensure implementation as per Airbus notification. While we carry out the necessary inspections, we are making every effort to minimise disruptions," it said in a statement.

In a statement Air India Express said, "We have initiated immediate precautionary action in response to an alert requiring a software fix on the Airbus A320 fleet. While a majority of our aircraft are not impacted, the guidance applies to operators worldwide and may result in adjustments to flight operations, including potential delays or cancellations."

A source said that 31 A320 family planes of Air India Express will be impacted.

In a post on X, Air India said it is aware of an Airbus directive related to its A320 family aircraft currently in-service across airline operators.

"This will result in a software/hardware realignment on a part of our fleet, leading to longer turnaround time and delays to our scheduled operations. Air India regrets any inconvenience this may cause to passengers till the reset is carried out across the fleet," the airline said.

The three airlines did not disclose the number of aircraft that have been impacted.

A320 family aircraft includes A319s, A320 ceos and neos, A321 ceos and neos.

In an Emergency Airworthiness Directive, EASA said Airbus has asked airline operators to install a serviceable ELAC in the impacted aircraft.

Airbus said an 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 has consequently identified a significant number of A320 family aircraft currently in-service which may be impacted," it said in a release.