As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT APPX 70KTS "HYD SYS B LO PRESS" ECAM WARN MESSAGE.REJECTTED TAKE OFF. FOUND BLUE SYST ACCUM VERY LOW.SERVICED SAME PER A320 AMM 29-14. PERFORMED OP CHECK OF BLU SYST BUT FOUND THAT ACCUM HAD LEAKED OUT MOST OF ITS PRE CHARGE.DETERMINED ACCUMULATOR BAD.REPLACED PER A320 AMM 29-13.SERVICED BLUE SYSTEM HYD AND BLED SYSTEM.BLUE SYST LEAK CHECK ANMD OPERATIONAL CHECK GOOD. (LP: 8645494). AIRCRAFT WAS GROUNDED