[SystemSafety] Technical information on Airbus A320 recall?

[Prof. Dr. Peter Bernard Ladkin]

On 2025-11-30 14:42 , John Spriggs wrote:
> If I understand correctly, older versions of the aircraft require the computers to be swapped out to deploy a software change, whereas the newer ones accept downloads.  That is probably why some sources mention a hardware change.

That seems to be right. Sean Broderick of AvWeek says the same thing 
https://aviationweek.com/air-transport/safety-ops-regulation/easa-orders-immediate-airbus-a320-flight-control-software

Which doesn't help answer David's question of how a pure *software* change can affect SEE 
subsceptibility.

PBL

Prof. Dr. Peter Bernard Ladkin
Causalis Limited/Causalis IngenieurGmbH, Bielefeld, Germany
Tel: +49 (0)521 3 29 31 00