As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT EXPERIENCED LOSS OF BRAKING EFFECTIVENESS ON THE RIGHT SIDE. MAINTENANCE FOUND THE BRAKE CALIPER LEAKING FROM THE CYLINDER CONTAINING THE BRAKE PISTON ('PUCK'). LEAKING HYDRAULIC FLUID SOAKED THE BRAKE LININGS (P/N 66-30), REDUCING BRAKING EFFECTIVENESS.