What was found
WITH POWER LEVERS AT DETENT TORQUE ON NR 2 ENGINE WAS ABOVE TARGET AND PROPELLER RPM WAS 970. INTERROGATED CDS FOR FAULTS. NO FAULTS INDICATED. GROUND RAN ACFT, ON APPLICATION OF HIGH POWER WAS ABLE TO DUPLICATE DISCREPANCY ABOUT THREE TIMES AND THEN COULD NOT DUPLICATE AFTER THAT. R & R NR 2 ENGINE OVERSPEED GOVERNOR IAW AMM TASKS 61-20-26-000-801 AND 61-20-26-400-801. NR 2 OVERSPEED GOVERNOR CHANGED AS A PRECAUTION. GROUND RAN ACFT AT HIGH POWER AGAIN. PROP SPEED INDICATED NORMAL AND ENGINE TORQUE INDICATED NORMAL. ALL OPS CHECKED ARE GOOD. NO LEAKS NOTED. COMPLIED WITH ENGINE TREND DOWNLOAD IAW TASK CARD 6773101. NO FURTHER DEFECTS NOTED. RETURNED TO SERVICE.