As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CMH - FLT 2031 - AIR TURN BACK DUE TO LOSS OF GREEN HYDRAULIC SYSTEM. FOUND 2 HYDRAULIC LEAKS IN MAIN LANDING GEAR WHEEL WELL. BOTH LEAKS WERE ON THE GREEN HYDRAULIC SYSTEM MANIFOLD. REPLACD O-RINGS ON BOBBIN ASSEMBLY OF GREEN SYSTEM 3-2 WAY VALVE (CENTER MAIN WHEEL WELL). LEAK CHECKS GOOD. SERVICED AS REQUIRED. (M)