Hi guys,
Today I had a funny thing on Airbus, let me explain :
During landing (manual one, during flare to be more precise) a Master Caution aural waring rang, the master caution push-button on the Captain side was only showing "MASTER" illuminated (upper line of the pb) and the F/O one was only showing "CAUT" illuminated (lower line), no ECAM, no status, but those lights stayed illuminated until one of us pressed on it.
It's the first time I see this configuration (lights were tested), my captain told me that he saw this case in a CBT saying that it comes from a FWC or SDAC problem. He wasn't sure so we both looked in FCOM, MEL, FCTM and nothing was found

.
Does anyone of you experienced this kind of thing before ? any idea of what it is ? references ?
Any relative infos would very appreciate

, thanks a lot.