As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYDRAULIC LEAK IN THE TAIL SECTION, JUST AFT OF APU INTAKE INSIDE DOUBLE DOOR ACCESS. AFTER SELECTING APU AIR ON, SMOKE BEGAN TO FILL THE COCKPIT. SELECTED APU AIR OFF AND THE SMOKE QUIT. IDENTIFIED THE LEAK COMING FORM SWEDGE TEE FITTING AT THE MAIN NR 2 HYDRAULIC PRESSURE LINE. ACCOMPLISHED A PERMANENT REPAIR IAW MM 29-10-01.