What was found
WHILE TAXING WHEN APPLYING THE RT BRAKE SIGNIFICANT SHUTTER FELT THROUGHOUT AIRPLANE. LT BRAKE OPS NORMALLY. WHILE PARKING ACFT HAD TO MAKE A RT TURN INTO SPOT. LOCKING & RELEASING OF RT MAIN BRAKE WAS SO PRONOUNCED THAT NOSE WAS LURCHING ACROSS RAMP IN TURN. WHILE SLOWING TO A STOP, THE AIRCRAFT ABRUPTLY JOLTED TO A STOP WITHOUT ADDITIONAL BRAKE PRESSURE APPLIED. PER MCC REQUEST, REMOVED OLD BCU DUE TO BRAKING ISSUES. INSTALLED MODIFIED BCU IAW AMM 32-41-01. PREPPED AND PERFORMED FUNCTIONAL CHECKS, CHECKS GOOD. PREPPED AND TAXIED AIRCRAFT AND CHECKS GOOD. BRAKING IS NORMAL AND SMOOTH. EMBRAER ENGINEERING PROVIDED ETD2024-P300-04956056 TO INSTALL -1 0. CLOSED AND SECURED AIRCRAFT.