As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING BOARDING, THE GROUND CREW REPORTED A LARGE FLUID LEAK AROUND THE RIGHT MAIN LANDING GEAR ACCOMPANIED BY A LARGE QUANTITY OF SMOKE. AIRCRAFT WAS GROUNDED. MAINTENANCE FOUND THE NR 3 BRAKE LEAKING FROM A LOWER PISTON. REMOVED AND REPLACED THE BRAKE ASSEMBLY IAW AMM 32-41-41. LEAK CHECKED NORMAL.