GUMS
Seems we could discover how the 'bus gear up/down criteria works and other stuff that may be a factor in the crash.
If it had been a factor Airbus would have issued a Technical Notification to all airlines. Unfortunately some "pilots" can screw up royally, probably did not set out to do it but did. Recognizing you have messed up and doing something about it is what makes a "professional" pilot, not "pressonitus".