What was found
(CAN) VIBRATION INDICATION ON NR 1 ENGINE, 3.0 UNITS ON CHANNEL A AND B. THE ENGINE WAS SHUT DOWN IAW THE SOP. MAINTENANCE REMOVED THE LP FAN BLADES , CLEANED AND REINSTALLED THEM IAW AMM 72-31-05. THE TEST NR 11, VIBRATION SURVEY WAS C/OUT AND FOUND TO BE WITHIN LIMITS AT 1.0 UNITS VIB AT TAKE OFF POWER, IAW AMM 72-00-00.- CLEANED AND LUBRICATED LP FAN COMPRESSOR BLADES (CLAPPERSIAW AMM 72-31-05. REMOVED AND INSPECTED MASTER AND INTERNAL GEARBOX MCDS IAW 72-01-00,NO CONTAMINATION FOUND. REMOVED , INSPECTED AND REPLACED THE ENG. OIL FILTERS IAW AMM 72-01-00. BOROSCOPE C/OUT AND NO FAULTS FOUND IAW AMM 72-00-00.