As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ROLL, A SMOKEY ODOR WAS DETECTED IN THE CABIN AND COCKPIT. MAINTENANCE FOUND EVIDENCE OF A HYDRAULIC LEAK NEAR THE APU INLET. THE AIRCRAFT WAS GROUNDED. MAINTENANCE TIGHTENED THE LINES. LEAK CHECKED GOOD IAW AMM 29-10-00.