Aircraft type documented in FlightAware

Hi,
I just got off LX569 and LX1024. CHecking on FLighAware about the type of the aircraft, I noticed that this is provided wrongly. It definitely was a BCS3 in both cases, not an A320 as indicated in FlightAware.
I therefore wonder how often such errors occur and how valid the information in FLightAware really is.