Originally Posted by
Maverick2167
This is probably the same as Qantas 72 (2008). BIT FLIP phenomenon. My hunch is the batch of ELAC chips are affected, who knows a software update might not do the correction required?
For Qantas 72, the bit flip occurred in the ADIRU, not the flight control computers. That combined with a bug in the PRIM air data logic allowed the master PRIM to accept data from the single faulty ADIRU even though it disagreed with the other 2. The bug was introduced when Airbus implemented a quick and dirty fix to address AoA discrepancies at large sideslip angles. The report specifically notes that the A320 never exhibited those issues.