As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ON TAKEOFF ROLL, BELOW 80 KNOTS YELLOW HYDRAULIC LOW QUANTITY WARNING. TAKEOFF REJECTED. MAINTENANCE SECURED LINE ON RIGHT HAND GEAR WHEEL BRAKE AUTOMATIC SELECTOR VALVE PER AMM 32-42-13. SERVICED YELLOW HYDRAULIC SYSTEM PER AMM 12-12-29 AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK.