What was found
FLT 1244 CLT-BOS DURING CRUISE AT FL350 PILOT DECLARED EMERGENCY DUE TO EICAS MESSAGE "HYD 2 EDP FAIL" LOSE OF NR 2 HYDRAULIC SYSTEM. RETURNED BACK TO CLT AND LANDED AIRCRAFT UNEVENTFULLY AND TAXIED TO THE GATE. MX REMOVED AND REPLACED ENGINE DRIVEN HYD PUMP NR 2 IAW AMM 29-11-01, REPLACED HYD SYS 2 FILTERS IAW AMM 29-11-05, SERVICED HYD NR 2 SYSTEM IAW AMM 12-12-00, OPS AND LEAK CHECK GOOD. PERFORMED RETURN TO SERVICE IAW AMM 27-00-00-070-801-A NO MESSAGE REMAINED. AIRCRAFT RETURNED TO SERVICE. CORRECTION, FLT 1244 CLT-BOS WAS NOT AN AIR TURNBACK TO CLT, AIRCRAFT CONTINUED TO BOS WHERE ALL CORRECTIVE ACTION WAS ACCOMPLISHED.