What was found
(CAN) IN CRUISE FLIGHT (30 MINUTES AFTER DEPARTURE THE FLIGHT CREW OBSERVED NR 1 AND NR 2 LOW HYDRAULIC PRESSURE LIGHTS ILLUMINATED. THE FLIGHT CREW RETURNED TO DEPARTURE, USED ALTERNATE MEANS FOR EXTENDING THE LANDING GEAR AND LANDED UNEVENTFUL. MAINTENANCE FOUND INSUFFICENT FLUID IN THE HYDRAULIC SYSTEM. A LEAK IN HYDRAULIC LINE P/N 373Q2277, CAUSED BY CHAFING WAS FOUND IN THE LT MAIN LANDING GEAR WHEEL WELL. THE LINE WAS REPLACED, SYSTEM BLEED AND FUNCTION CHECKED OK. (TC NR 20070131008)