As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER POWER TO FLEX AROUND 40K HAD TO ABORT TAKEOFF DUE TO YELLOW HYD LOW AER ECAM, AFTER ABORT, ALL RESET TRIED AGAIN SAME OUTCOME ABORTED T/O AROUND 52K. REMOVED AND REPLACED YELLOW SYSTEM RESERVOIR CHECK VALVE. REMOVED AND REPLACED DIODE MODULE 35VD. ALL ENGINE AND HYDRAULIC INDICATIONS CHECK NORMAL PER A 300 JRH.