As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT BRAKE WAS GRABBING WHEN DOING A RIGHT TURN DURING TAXI. TRIED TO TAXI BACK TO THE FBO BUT IT BECAME WORSE AND STARTED GRABBING WHILE GOING IN A STRAIGHT LINE. WE STOPPED IN PLACE AND GOT A TUG. CORRECTIVE ACTION: PERFORMED MAIN HYDRAULIC SYSTEM BLEEDING IAW EMB PHENOM 300 MM CHAPTER 29-10-00. OPS CHECK GOOD.