What was found
THERE WAS A COMPLETE (A) SYSTEM HYDRAULIC LOSS WHILE IN FLIGHT. THE EMERGENCY BRAKES AND EMERGENCY NOSEWHEEL STEERING WERE USED FOR LANDING. REMOVED AND REPLACED HYDRAULIC PUMP PRESSURE HOSE ASSY P/N AE1011923H0152, OLD HOSE WAS BLOWN OUT. HOSE REPLACED IAW AMM 20-10-01. FOUND BAD O-RING ON TOP OF HYDRAULIC MANIFOLD. REMOVED AND REPLACED O-RING P/N NAS1612-6 IAW AMM 29-10-10 BLED HYDRAULIC SYSTEM (A) IAW AMM 12-10-15, RESERVICED PNUMATIC STORAGE BOTTLES IAW AMM 12-10-36.