On 10 August 2018, Airbus informed the ATSB that:
… after internal review with our ECAM specialists we have decided to increase the priority of the NAV ADR DISAGREE alert.
The NAV ADR DISAGREE alert will now have a higher priority than the EPR MODE FAULT alerts.
This will insure that in the event scenario, this alert would be directly visible to the crew.
This modification will be introduced in the next FWS [flight warning system] standard for SA family, the version F12, which currently planned for Q1-2019. A worldwide retrofit is anticipated.