As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON LANDING RT BRAKE PEDAL IN BOTH PILOT & COPILOTS POSITION WAS APPLIED TO FULLY DEPRESSED POSITION & RESPONDED WITH NEGATIVE BRAKING EFFECT ON BOTH POSITIONS. FOUND PILOTS RT MASTER CYLINDER LEAKING. REPLACED PILOTS RT MASTER CYLINDER WITH UNIT O/H. OPS AND LEAK CHECK GOOD. ALL WORK IAW MM 32-40-00.