What was found
NON-ETOPS FLIGHT 215 HNL-LIH, DURING CRUISE FLIGHT, THE CREW NOTED THE HYDRAULIC QUANTITY GAUGE DROPPED TO ZERO. CREW COMPLETED THE HYDRAULIC SYSTEM A FAILURE CHECKLIST AND DECLARED AN EMERGENCY. THE CREW RETURNED TO HNL WITHOUT FURTHER INCIDENT. MAINTENANCE TOWED THE AIRCRAFT FROM RUNWAY 8L AFTER ARRIVAL. THE A SYSTEM LT REAR SPAR HYDRAULIC HOSE ASSEMBLY WAS REPLACED. ALL OPERATIONAL AND LEAK CHECKS SATISFACTORY PER AMM 29-11-0 PG 201. THE AIRCRAFT WAS RETURNED TO SERVICE.