What was found
DURING CRUISE, NR 2 ENGINE TORQUE REDUCED TO 30 TO 50 PERCENT WITH NOTICEABLE POWER LOSS. ALSO 7 TO 10 PERCENT POWER LOSS DURING APPROACH. NO CAUTION OR WARNING LIGHTS ILLUMINATED. R & R NR 2 EEC IAW PM MM72-01-10. GROUND RAN ACFT, COULD NOT DUPLICATE DISCREPANCY. CLEARED MEL. ACFT RELEASED FOR EVALUATION FLIGHT AND WHILE IN CRUSE NR 2 ENGINE TORQUE REDUCED 30 TO 50 PERCENT WITH NOTICABLE POWER LOSS. 7 TO10 PERCENT TORQUE LOSS ON APPROACH. NO CAUTION OR WARNING LIGHTS AND REPLACED NR 2 EEC. MX ACTION COMPLETE TO SAT EVAL FLIGHT. R & R NR 2 TSEU IAW MM 72-01-10. NO FIX. GROUND RAN ACFT AND PROBLEM WAS FOUND WITH EEC ON.