What was found
APPROX 1 HR INTO FLT AT FL410, RT N1 READ 2 % LOWER THAN LT N1. RT ENG N1 DID NOT RESPOND TO THROTTLE. RT N1 ROLLED BACK TO 55 %, WITH FURTHER REDUCTION TO 35 %. ALL ENG INDICATIONS LOW BUT WITHIN LIMITS. AT APPROX 18600 FT-7 RAT RT ENG SPOOLED UP/ BACK TO NORMAL ENG POWER & INDICATIONS. INSPECTED ENG FOR LEAKS, OR DEFECTS. NONE NOTED. SUMPED ALL FUEL DRAINS & FOUND WATER IN LT & RT SIDES. SUMPED OUT TANKS. RAN ACFT AT IDLE & POD FOR APPROX 5 MIN, ALL ENG PARAMETERS NORM. RAN RT & LT ENG AT CRUISE & NO ENG SPOOL BACK NOTED. REMOVED LT / RT FUEL FILTERS. INSPECTED & FOUND NO EVIDENCE OF TRASH. REPLACED W/ NEW FILTER & PACKINGS. INSPECTED T1/FCU SENSOR. MEASUREMENT .320 IN AT APPROX 40*. LEAK CKS GOOD.