What was found
HYD 2 LOW QUANTITY AT 0 AND LOSS OF PRESSURE. DECLARED EMERGENCY, RETURNED TO FIELD, LANDED WITHOUT INCIDENT. REMOVED AND REPLACED ENGINE DRIVEN HYD PUMP NR 2 IAW AMM 29-11-01. SERVICED HYD SYSTEM NR 2 IAW AMM 12-12-01. GROUND RUN AND OPS CHECK NORMAL.