What was found
(CAN) AS PER TC AND AIRBUS CANADA, A SDR MUST BE CREATED FOR EACH FMS EVENT` SER - AUTO-THROTTLE MODE MISBEHAVIOR DURING ACCELERATION SEGMENT AFTER TAKEOFF THE A/THR MODE CHANGED SEVERAL TIMES FROM CLB-1 TO GA THRUST. ACTUAL N1 INCREASE/DECREASE NOTICED. I LEFT THE AUTO-THROTTLE INTENTIONALLY ENGAGED, BUT OPENED THE THRUST MENU ON THE FMS. I NOTICED THE SWITCHING THERE AS WELL. CHANGING FROM MANAGED THRUST TO MANUAL THRUST SETTING (CYAN) STOPPED THE SWITCHING BETWEEN THE DIFFERENT RATINGS. ADDITIONALLY I NOTICED THAT THE RATING SWITCHING TOOK PLACE EVERY TIME THE `WXR PWS FAIL` NUISANCE ADVISORY WAS DISPLAYED. (ADVISORY SHOWN = GA THRUST) - (ADVISORY GONE - CLB-1). THE HMU WAS DEGRADED AS WELL (CONSIDERED NUISANCE). THE LAST 2 ITEMS MAY OR MAY NOT BE CORRELATED TO THE ATHR INCIDENT - BUT TO US IT SEEMED LIKE AT LEAST THE WXR FAIL ADVISORY WAS CONNECTED. (TC# 20190625013)