What was found
RT ENGINE SHUTDOWN AS A PRECAUTION FOR HIGH ENGINE VIBRATION (4.0) AMBER. RT ANTI-ICE VALVE FAILED TO OPEN IN ICING AND VIBRATION STARTED RT AFTER. SUSPECT COMPRESSOR BLADES WERE ICED. TROUBLE SHOT IAW FIM 71-05, PERFORMED AVM BITE IAW FIM 77-31 HAD A B8 FAULT ON RT ENGINE CLEARED FAULT AND DID NOT RETURN. REPLACED NR 2 ENG AVM ACCELEROMETER IAW AMM 77-31-01-4. NO FURTHER FAULTS ON RT AVM. R & R RT ENG AVM REF AMM 77-31-03-4. RAN ENG AND PERFORMED ENG VIBE SURVEY IAW AMM 71-00-00-5-3 ALL READINGS WITHIN LIMITS N1 WAS 1.5 UNITS AT 1.5 EPR- N2 WAS 1.1 UNITS AT 1.5 EPR- N3 WAS .9 UNITS AT 1.5 EPR AND BB WAS 1.9 UNITS AT 1.5 EPR. SEE WRI 30-20/0535 FOR A/I INFO ALL WORK IAW AMM 71-00-00-5, 77-31-01-4 FIMS 77-31, 71-05 AND AMM 71-00-00-6. ACFT OK FOR SRVICE. RT ENG ANTI-ICE VALVE REPLACED IAW AMM 30-21-03-4.