As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: BRAKES ARE VERY GRABBY, EXHIBITING WARPED LIKE LURCHING WHEN COLD AT LOW SPEED. MAINTENANCE REPLACED THE YELLOW HYDRAULIC SYSTEM ALTERNATE BRAKING UPPER TRANSDUCER PER AMM 32-44-18. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO ISSUES NOTED.