What was found
DURING TAXI, CREW RECEIVED 'ELEVATOR NR 3 HYDRAULIC SYSTEM OFF LIGHT'. FLIGHT CREW ELECTED TO RETURN TO GATE. AIRCRAFT RETURNED TO GATE WITHOUT FURTHER INCIDENT. MAINTENANCE PERSONNEL NOTED NR 3 HYDRAULIC RESERVOIR, P/N AYG70275019, LOW. SERVICE TO FULL, ELEVATOR 'OFF LIGHT' EXTINGUISH. AIRCRAFT RETURNED TO SERVICE. (M)