What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS A NOTICEABLE VIBRATION WHEN BRAKES APPLIED WAS NOTED AS WE TAXIED INTO THE GATE IT WAS MORE NOTICEABLE AS WE TURNED, INTO THE GATE. MAINTENANCE ACCOMPLISHED BITE OF BSCU, NO FAULTS FOUND. ACCOMPLISHED NORMAL BRAKE, BRAKE BLEED IAW AMM 32-42-00. TAXIED A/C BRAKES OPERATED NORMAL.