As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OAK - DURING WALK AROUND, A HYDRAULIC LEAK WAS FOUND AT THE RT FLAP FAIRING. INSPECTED AND FOUND THE HYDRAULIC LINE FROM THE HEAT EXCHANGER CHAFING AGAINST THE FIRE PROTECTION DISCHARGE LINE. BOTH LINES CHAFED THROUGH. MAINTENANCE REMOVED AND REPLACED THE HYDRAULIC LINE AND THE FIRE PROTECTION DISCHARGE LINE. LEAK CHECKED GOOD. REFERENCE ASAA9740006.