What was found
ATO-ON T/O ROLL, AT APPROXIMATELY 80 KIAS, ECAM BRAKES RELEASED. BRAKE 4 RELEASED. PREVIOUS WRITE UP NR 7277029. FOUND TACHOMETER-WHEEL SPEED (14GG2)/BSCU (3GG) ON BSCU SYS TEST. OK TO CONTINUE, PER MEL 32-42-1. NR 4 BRAKE DEACTIVATED W/O BRAKE REMOVAL. PLACARD INSTALLED/LIDS UPDATED. DMI 517134. MLG HUB CAP HAS BEEN REPLACED. FOUND HUB CAP DRIVE SPLINE BROKEN. OK TO CLEAR DMI. REACTIVATED NR 4 BRAKE. OPERATIONS AND LEAK CHECK GOOD. LIDS CLEARED, PLACARD REMOVED.