What was found
RIGHT MLG BRAKE: ON TAXI OUT RT MAIN BRAKE STARTED TO MAKE SHUTTER/GRINDING SOUND WHEN APPLYING ANY AMOUNT OF BRAKE PRESSURE. FELT LIKE THERE WAS NO BRAKE ON RIGHT SIDE. WAS NOT FELT WHILE MOVING WHEN BRAKES NOT APPLIED. NOISE AND SENSATION CAN BE HEARD AND FELT WHILE TAXING. RT MAIN BRAKE APPEARS TO BE VISUALLY OK SEEMS LIKE SOMETHING WITH BCU OR ANTISKID SYSTEM. // SIGNOFF // COMPLIED WITH GVI OF MLG BRAKES. NO VISUAL DEFECTS NOTED AT THIS TIMIE COMPLIED WITH MLG BRAKE BLEEDING PROCEDURE. COMPLIED WITH TAXI CHECK. OP'S CHECK GOOD IAW PHENOM 300AMM TASK 32-40-00-870-801·A. NO SHUTTER/ GRINDING OR NOISES NOTICE AT THIS TIME,